Titanium detection method for fixed pollution sources

Titanium detection method for fixed pollution sources, Total:192 items.

The international standard classification for "Titanium detection method for fixed pollution sources" includes: Non-ferrous metals , Wastes , Air quality in general , Stationary source emissions , Ambient atmospheres , Piping systems .

The Chinese standard classification for "Titanium detection method for fixed pollution sources" includes: Rare metals and their alloys analysis method , Gas medium and radioactive substance sampling , Analysis methods for exhaust emission pollutants , Specifications for pollution control , Analysis methods for industrial wastewater and pollutants , Analysis methods for toxic substances in atmosphere , Environmental pollutant monitoring methods , Marine hydraulic/pneumatic elements and accessories .

General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China

GB/T 16157-1996 The determination of particulates and sampling methods of gaseous pollutants emitted from exhaust gas of stationary source
GB/T 23603-2009 Test method of titanium and titanium alloy surface contamination layer

Professional Standard - Environmental Protection

HJ/T 38-1999 Stationary source emission -- Determination of nonmethane hydrocarbons -- Gas chromatography
HJ 1132-2020 Stationary source emission—Determination of nitrogen oxides —Portable ultraviolet absorption method
HJ/T 66-2001 Stationary source emission -- Determination of chlorobenzenes -- Gas chromatography
HJ/T 35-1999 Stationary source emission -- Determination of acetaldehyde -- Gas chromatography
HJ/T 33-1999 Stationary source emission -- Determination of methanol -- Gas chromatography
HJ 544-2016 Stationary source emission - Determination of sulfuric acid mist - Ion chromatography
HJ/T 45-1999 Stationary source emission -- Determination of asphaltic smoke -- Gravimetric method
HJ/T 64.2-2001 Stationary source emission -- Determination of cadmium -- Graphitic furnace atomic absorption spectrophotometric method
HJ 692-2014 Stationary source emission-Determination of nitrogen oxides-Non-dispersive infrared absorption method
HJ/T 63.1-2001 Stationary source emission -- Determination of nickel -- Flame absorption spectrophotometric method
HJ 690-2014 Stationary source emission － Determination of benzene soluble particulate matter－Soxhlet extraction gravimetric method
HJ 675-2013 Determination of nitrogen oxide emissions from stationary sources by acid-base titration method
HJ 1045-2019 Specifications and test procedures for portable monitoring instrument for SO2 and NOX based on ultraviolet absorption method in flue gas emitted from stationary sources
HJ 1240-2021 Stationary source emission—Determination of gaseous pollutants（SO2, NO, NO2, CO, CO2）—Portable Fourier transform infrared spectroscopy method
HJ 1077-2019 Stationary source emission—Determination of oil fume and oil mist—Infrared spectrophotometric method
HJ/T 34-1999 Stationary source emission -- Determination of vinyl chloride -- Cas chromatography
HJ/T 44-1999 Stationary source emission -- Determination of carbon monoxide -- Non-dispersive infrared absorption method
HJ 1041-2019 Stationary source emission—Determination of trimethylamine—Suppressed ion chromatography
HJ 869-2017 Stationary source emission. Determination of phthalate esters - Gas chromatography
HJ/T 39-1999 Stationary source emission -- Determination of chlorobenzenes -- Gas chromatography
HJ 1131-2020 Stationary source emission—Determination of sulphur dioxide —Portable ultraviolet absorption method
HJ 629-2011 Stationary source emission. Determination of sulphur dioxide. Non-dispersive infrared absorption method
HJ 548-2009 Stationary source emissions - Determination of hydrogen chloride - Silver nitrate titration method
HJ 57-2017 Stationary source emission - Determination of sulfur dioxide - Fixed potential by electrolysis method
HJ 548-2016 Stationary source emissions - Determination of hydrogen chloride - Silver nitrate titration
HJ/T 36-1999 Stationary source emission -- Determination of acrolein -- Gas chromatography
HJ 1013-2018 Specifications and test procedures for nonmethane hydrocarbons continuous emission monitoring system in stationary sources
HJ/T 64.1-2001 Stationary source emission -- Determination of cadmium -- Flame atomic absorption spectrophotometric method
HJ/T 41-1999 Stationary source emission -- Determination of asbestos dust -- Microscopic count
HJ 538-2009 Stationary source emission - Determination of lead - Flame atomic absorption spectrometry
HJ 1079-2019 Stationary source emission—Determination of chlorobenzenes —Gas chromatography
HJ 1040-2019 Stationary source emission—Determination of hydrogen bromide—Ion chromatography
HJ/T 76-2007 Specification and test procedures for continuous emission monitoring systems of flue gas emitted from stationary sources (on trial)
HJ 543-2009 Stationary source emission-Determination of mercury-Cold atomic absorption spectrophotometry (Provisional)
HJ 545-2009 Stationary source emission - Determination of total gaseous phosphorus - Quimociac volumetric analysis
HJ 685-2014 Stationary source emission–Determination of lead–Flame atomic absorption
HJ/T 67-2001 Stationary source emission -- Determination of fluoride -- Ion selective electrode method
HJ 547-2009 Stationary source emission - Determination of chlorine - Iodometric method
HJ 688-2019 Stationary source emission—Determination of hydrogen fluoride —Ion chromatography
HJ 973-2018 Stationary source emission - Determination of carbon monoxid - Fixed potential by electrolysis method
HJ/T 76-2001 Specifications and test procedures for continuous emission monitoring systems of flue gas emitted from stationary sources
HJ 688-2013 Stationary source emission - Determination of hydrogen fluoride - Ion chromatography
HJ 544-2009 Stationary source emission - Determination of sulfuric acid mist - Ion chromatography
HJ 547-2017 Stationary source emission - Determination of chlorine-Iodometric method
HJ 693-2014 Stationary source emission-Determination of nitrogen oxides-Fixed potential by electrolysis method
HJ/T 57-2000 Determination of Sulphur Dioxide from Exhausted Gas of Stationary Source - Fixed-potential Electrolysis Method
HJ/T 42-1999 Stationary source emission -- Determination of nitrogen oxide -- Ultraviolet spectrophotometric method
HJ/T 37-1999 Stationary source emission -- Determination of acrylonitrile -- Gas chromatography
HJ 870-2017 Stationary source emission - Determination of carbon dioxide - Non-dispersive infrared absorption method
HJ 684-2014 Stationary source emission-Determination of beryllium -Graphite
HJ/T 40-1999 Stationary source emission -- Determination of benzo(a) pyrene -- High performance liquid chromatography
HJ/T 68-2001 Stationary source emission -- Determination of exhauster anilines -- Gas chromatography
HJ/T 56-2000 Determination of sulphur dioxide from exhausted gas of stationary source Iodine titration method
HJ 76-2017 Specifications and test procedures for continuous emission monitoring system for SO2, NOx and particulate matter in flue gas emitted from stationary
HJ 545-2017 Stationary source emission - Determination of total gaseous phosphorus - Quimociac volumetric analysis

Group Standards of the People's Republic of China

T/CACE 027-2021 Specification for continuous emission monitoring of NH3 in the flue gas emitted from stationary sources
T/SSESB 1-2020 Stationary source emission—Determination of humidity —Resistance and Capacitance Method
T/CNIA 0175-2022 Sampling method for gaseous pollutants in hydrogen-containing exhaust gas from stationary pollution sources in polycrystalline silicon production
T/CACE 026-2021 Specification for continuous emission monitoring of Hg in the flue gas emitted from stationary sources
T/CICEIA /CAMS7-2020 Measurement methods of fine particles for mobile pollution sources
T/HNAEPI 002-2021 Technical requirement and test method of on-line thallium monitor for pollutant discharge wastewater
T/QGCML 1768-2023 Technical Specifications for Operation and Maintenance of Stationary Pollution Source Flue Gas Online Monitoring Systems for Non-key Pollution Source Emitting Enterprises
T/SXAEPI 22-2024 Specifications for online monitoring device of stationary ammonia emissions
T/XZFW 004-2023 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method
T/BMS 01-2022 Guide to fixed-wing aircraft air pollution detection flight methods

Hebei Provincial Standard of the People's Republic of China

DB13/ 487-2002 Carbon Monoxide Emission Standards for Stationary Pollution Sources
DB13/T 5467-2021 Portable UV Absorption Method for Determination of Ammonia in Exhaust Gas from Stationary Pollution Sources
DB13/T 2375-2016 Gravimetric method for determination of low-concentration particulate matter in exhaust gas from stationary pollution sources
DB13/T 5468-2021 Gravimetric Method for Determining Humidity of Exhaust Gas from Stationary Pollution Sources
DB13/T 2376-2016 Determination of particulate matter in exhaust gas from stationary pollution sources β-ray method

Jiangxi Provincial Standard of the People's Republic of China

DB36/T 1499-2021 Basic data element of fixed pollution source
DB36/T 1386-2021 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method
DB36/T 1940-2024 Determination of humidity in exhaust gas from stationary pollution sources Resistance-capacitance method
DB36/T 1931-2024 Fixed pollution source waste gas flow rate online monitoring optical scintillation method

Professional Standard - Agriculture

GB/T 16157-1996(XG1-2018) "Determination of Particulate Matter in Exhaust from Stationary Pollution Sources and Sampling Methods of Gaseous Pollutants" Amendment No. 1
HJ 1287-2023 Determination of Blackness of Exhaust Gas from Stationary Pollution Sources by Ringelmann Telescope Method

Anhui Provincial Standard of the People's Republic of China

DB34/T 310014-2023 Determination of chlorine in waste gas from fixed pollution sources by ion chromatography

Zhejiang Provincial Standard of the People's Republic of China

DB33/T 310014-2023 Determination of chlorine in waste gas from fixed pollution sources by ion chromatography

Shanghai Provincial Standard of the People's Republic of China

DB31/T 310014-2023 Determination of chlorine in waste gas from fixed pollution sources by ion chromatography

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 2482-2019 Laser Scattering Method for Determination of Exhaust Gas Particles from Stationary Pollution Sources

Chongqing Provincial Standard of the People's Republic of China

DB50/T 679-2016 Determination of VOCS in exhaust gas from stationary pollution sources by gas chromatography-mass spectrometry
DB50/T 837-2017 Determination of ethanethiol in waste gas from stationary pollution sources by gas chromatography
DB50/T 836-2017 Determination of ethyl acetate in waste gas from stationary pollution sources by gas chromatography
DB50/T 838-2017 Determination of Triethylamine in Stationary Pollution Source Exhaust Gas by Gas Chromatography

Shandong Provincial Standard of the People's Republic of China

DB37/T 3462-2018 Ultrasonic method for on-line monitoring of flue gas velocity from fixed pollution sources
DB37/T 2704-2015 Determination of nitrogen oxides in exhaust gas from stationary pollution sources by ultraviolet absorption method
DB37/T 2705-2015 Determination of sulfur dioxide in exhaust gas from stationary pollution sources by ultraviolet absorption method
DB37/T 3785-2019 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method
DB37/T 3535-2019 Technical Specifications for Stationary Pollution Source Exhaust Gas Monitoring Point Setting
DB37/T 4432-2021 Stationary source emission—Determination of volatile fatty amines—Gas chromatography
DB37/T 3784-2019 Chemiluminescence method for the determination of nitrogen oxides in exhaust gas from stationary pollution sources
DB37/T 2537-2014 Gravimetric method for determination of low-concentration particulate matter in exhaust gas from stationary pollution sources in Shandong Province

Gansu Provincial Standard of the People's Republic of China

DB62/T 4391-2021 Determination of Exhaust Gas Particulates from Stationary Pollution Sources β-ray Absorption Method

Liaoning Provincial Standard of the People's Republic of China

DB21/T 3270-2020 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method
DB21/T 3073-2018 Determination of sulfur dioxide in exhaust gas from stationary pollution sources by ultraviolet absorption method
DB21/T 3072-2018 Determination of nitrogen oxides in exhaust gas from stationary pollution sources by ultraviolet-visible absorption method
DB21/T 3285-2020 Determination of selenium and its compounds in waste gas from stationary pollution sources by atomic fluorescence method

未注明发布机构

PD CEN/TS 18040:2024 Stationary source emissions — Determination of the mass concentration of formaldehyde — Automatic method

Inner Mongolia Provincial Standard of the People's Republic of China

DB15/T 2362-2021 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method

Jilin Provincial Standard of the People's Republic of China

DB22/T 3426-2023 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method

Qinghai Provincial Standard of the People's Republic of China

DB63/T 1873-2020 Determination of low-concentration particulate matter in exhaust gas from stationary pollution sources β-ray method

Beijing Provincial Standard of the People's Republic of China

DB11/T 1195-2015 Technical specifications for the setting of monitoring points for fixed pollution sources
DB11/ 1195-2015 Technical specifications for the setting of monitoring points for fixed pollution sources
DB11/T 1367-2016 Determination of methane/total hydrocarbons/non-methane total hydrocarbons in exhaust gas from stationary pollution sources Portable hydrogen flame ionization detector method

Jiangsu Provincial Standard of the People's Republic of China

DB32/T 4343-2022 Stationary source emission―Determination of mass concentration of particulate matter―Portable tapered element oscillating microbalance method

Professional Standard-Ships

CB/T 3997-2008 Determination Method of Contaminating Level by Particles for Marine Fluid

Shaanxi Provincial Standard of the People's Republic of China

DB61/T 1033-2016 Limits and detection methods of outdoor light pollution

Professional Standard - Aerospace

QJ 2724.6-1995 Gravimetric method for determination of solid pollution of working fluid in aerospace hydraulic pollution control
QJ 20014-2011 Test method of contamination component for spacecraft

Fujian Provincial Standard of the People's Republic of China

DB35/T 1913-2020 Determination of non-methane total hydrocarbons in exhaust gas from stationary pollution sources Portable catalytic oxidation-hydrogen flame ionization detector method

CZ-CSN

CSN 83 4712 Cast.2-1987 Air pollution control. Determination of hydrogen sulphide emissions from stationary sources. Sampling for manual methods
CSN 83 4713 Cast.2-1987 Air pollution control. Determination of carbon sulphide emissions from stationary sources. Sampling for manual methods
CSN 83 4712 Cast.3-1987 Air pollution control. Determination of hydrogen sulphide emissions from stationary sources. Titration method
CSN 83 4712 Cast.4-1987 Air pollution control. Determination of hydrogen sulphide emissions from stationary sources. Photometric method
CSN 83 4752 Cast.2-1989 Air pollution control. Determination of fluorine emissions from stationary sources. Sampling for manual methods
CSN 83 4713 Cast.3-1987 Air pollution control. Determination of carbon sulphide emissions from stationary sources. Argentometric titration
CSN 83 4752 Cast.5-1989 Air pollution control. Determination of fluorine emissions from stationary sources. Titration method
CSN 83 4721 Cast.4-1987 Air Pollution Control. Determination of nitrogen oxides emissions from stationary sources. Photometric measurement method
CSN 83 4713 Cast.4-1987 Air pollution control. Determination of carbon sulphide emissions from stationary sources. Iodimetric method
CSN 83 4721 Cast.3-1987 Air Pollution Control. Determination of nitrogen oxides emissions from stationary sources. Alkalimetric titration method
CSN 83 4752 Cast.4-1989 Air pollution control. Determination of fluorine emissions from stationary sources. Photometric method
CSN 83 4751 Cast.2-1987 Air pollution control. Determination of ehlorine and hydrogen chloride emissions from stationary sources. Sampling for manuál methods
CSN 83 4752 Cast.3-1989 Air pollution control. Determination of fluorine emissions from stationary sources. Potenciometric method
CSN 83 4751 Cast.3-1987 Air pollution control. Determination of chlorine and hydrogen chloride emissions from stationary sources. Determination of Cl2. Photometric method
CSN 83 4751 Cast.4-1987 Air pollution control. Determination of chlorine and hydrogen chloride emissions from stationary sources. Determination of CL2
CSN 83 4721 Cast.1-1987 Air Pollution Control. Determination of nitrogen oxides emissions from stationary sources. General part
CSN 83 4713 Cast.1-1987 Air pollution control. Determination of carbon sulphide emissions from stationary sources. General part
CSN 83 4751 Cast.5-1987 Air pollution control. Determination of chlorine and hydrogen chloride emissions from stationary sources. Determination of HC1
CSN 83 4712 Cast.1-1987 Air pollution control. Determination of hydrogen sulphide emissions from stationary sources. General part
CSN 83 4611-1982 Measurement of solid particulate emissions from stationary sources
CSN 83 4752 Cast.1-1989 Air pollution control. Determination of fluorine emissions from stationary sources. General part
CSN 83 4721 Cast.2-1987 Air Pollution Control. Determination of nitrogen oxides emissions from stationary sources. Sampling for manual measurement
CSN 83 4751 Cast.1-1987 Air pollution control. Determination of ehlorine and hydrogen chloride emissions from stationary sources General part
CSN 83 4751 Cast.6-1987 Air pollution control. Determination of chlorine and hydrogen chloride emissions from stationary sources. Determination of Cl2 and HCl

SCC

BS EN 1911-1:1998 Stationary source emissions. Manual method of determination of HCI-Sampling of gases
SN-CEN/TS 17638:2021 Stationary source emissions – Manual method for the determination of the mass concentration of formaldehyde – Reference method
DANSK DS/ISO 11632:1998 Stationary source emissions - Determination of mass concentration of sulfur dioxide - Ion chromatography method
DANSK DS/EN 14385:2004 Stationary source emissions - Determination of the total emission of As, Cd, Cr, Co, Cu, Mn, Ni, Pb, Sb, TI and V
UNE-EN 1911-1:1998 STATIONARY SOURCE EMISSIONS. MANUAL METHOD OF DETERMINATION OF HCI. PART 1: SAMPLING OF GASES.
NS-EN 1911-1:1998 Stationary source emissions — Manual method of determination of HCl — Part 1: Sampling of gases
BS 5540-4:1981 Evaluating particulate contamination of hydraulic fluids-Method of defining levels of contamination (solid contaminant code)
SN-CEN/TS 17286:2019 Stationary source emissions – Mercury monitoring using sorbent traps
NS-EN 14884:2022 Stationary source emissions — Determination of total mercury — Automated measuring systems
BS EN 1911-3:1998 Stationary source emissions. Manual method of determination of HCI-Absorption solutions analysis and calculation
BS 5540-4:1988 Evaluating particulate contamination of hydraulic fluids-Method of defining levels of contamination (solid contaminant code)
UNE-EN 1911-2:1998 STATIONARY SOURCE EMISSIONS. MANUAL METHOD OF DETERMINATION OF HCL. PART 2: GASEOUS COMPOUNDS ABSORPTION.
VDI 4220 BLATT 1-2018 Quality assurance — Requirements for bodies for the detection of air pollutants at stationary sources and in the outside air — General requirements
VDI 4220-2011 Quality assurance — Requirements for bodies for the detection of air pollutants at stationary sources and in the outside air
ASD-STAN PREN 2003-9:1996 Aerospace Series Test Methods Titanium and Titanium Alloys Part 9 : Determination of Surface Contamination
NS-EN 2003-009:2007 Aerospace series — Test methods — Titanium and titanium alloys — Part 009: Determination of surface contamination
NS-EN 1911-2:1998 Stationary source emissions — Manual method of determination of HCl — Part 2: Gaseous compounds absorption
DANSK DS/EN 2003-009:2007 Aerospace series - Test methods - Titanium and titanium alloys - Part 009: Determination of surface contamination
AS 2925.9:1987 Methods of testing thermosetting laminated sheet, Method 9: Method for determining resistance to staining

International Organization for Standardization (ISO)

ISO 25140:2010 Stationary source emissions - Automatic method for the determination of the methane concentration using flame ionisation detection (FID)

Association Francaise de Normalisation

NF X43-317:2011 Émissions de sources fixes - Détermination de l'indice de pollution acide ou alcaline des effluents gazeux
NF X43-353*NF EN ISO 25140:2010 Stationary source emissions - Automatic method for the determination of the methane concentration using flame ionisation detection (FID).
NF X44-052:2002 Emissions from stationary sources - Determination of high mass concentrations of dust - Manual gravimetric method
NF EN 2003-009:2007 Aerospace series - Test methods - Titanium and titanium alloys - Part 009: determination of surface contamination

British Standards Institution (BSI)

BS EN ISO 25140:2010 Stationary source emissions. Automatic method for the determination of the methane concentration using flame ionisation detection (FID)
BS EN 2003-009:2007 Aerospace series - Test methods - Titanium and titanium alloys - Determination of surface contamination
BS EN ISO 21258:2010 Stationary source emissions - Determination of the mass concentration of dinitrogen monoxide (N2O) - Reference method - Non-dispersive infrared method

HU-MSZT

MSZ 21 853/7-1975 Air pollution source detection, sulfur dioxide measurement
MSZ 21853/16-1980 Air pollution source detection. Equation Emissions Definition
MSZ 21853/15-1982 Inspection of air pollution sources, determination of chlorine emission iodometric method
MSZ 21 853/9-1978 Air pollution source detection. Measurement of nitrogen dioxide by continuous method
MSZ 21 853/13-1980 Air pollution source inspection, determination of lithium
MSZ 21853/14-1981 Inspection of air pollution sources, determination of ammonia nitrogen emissions, using acid-base determination method
MSZ 21 459/3-1981 Air pollution conduction detection. Calculation of pollution effects from multiple sources or comprehensive sources
MSZ 9279/3-1979 Fine chemicals testing methods. Copper contamination detection
MSZ 9279/1-1980 Fine chemicals testing methods. Arsenic contamination detection
MSZ 9279/8-1980 Fine chemicals testing methods. Nitrogen pollution detection
MSZ 9279/2-1981 Fine chemicals testing methods. Iron contamination detection
MSZ 21 459/1-1981 Determination of air pollutant dispersion. Calculate pollution degree from pollution source point
MSZ 9279/5-1980 Fine chemicals testing methods. Ammonia contamination detection
MSZ 21459/3-1981 Determination of air pollutant dispersion. Determination of areas contaminated by multiple or single pollution sources
MSZ 21 853/2-1976 Air pollution source detection and measurement
MSZ 19164-1971 Air pollution source detection and measurement
MSZ 21 853/1-1976 Air pollution source detection. common standard
MSZ 21853/13-1980 Air Pollution Pollution Testing Fluoride Emission Definition
MSZ 9279/9-1972 Fine chemicals testing methods. Carbonic acid contamination detection
MSZ 9279/7-1980 Fine chemicals testing methods. Sulfuric acid contamination detection
MSZ 21 853/3-1977 Detection of air pollution sources and determination of hard material emissions

Korean Agency for Technology and Standards (KATS)

KS I ISO 25139:2013 Stationary source emissions ― Manual method for the determination of the methane concentration using gas chromatography

BSI

DANSK DS/CEN/TS 18040:2024 Stationary source emissions – Determination of the mass concentration of formaldehyde – Automatic method

ES-UNE

UNE-EN 2003-009:2007 Aerospace series - Test methods - Titanium and titanium alloys - Part 009: Determination of surface contamination (Endorsed by AENOR in May of 2007.)

RU-GOST R

GOST 17.2.4.08-1990 Environment protection. Atmosphere. Methods of determination of humidity of gas-and-dust streams from stationary sources of pollution

Lithuanian Standards Office

LST EN 2003-009-2007 Aerospace series - Test methods - Titanium and titanium alloys - Part 009: Determination of surface contamination

Danish Standards Foundation

DS/EN 2003-009:2007 Aerospace series - Test methods - Titanium and titanium alloys - Part 009: Determination of surface contamination

German Institute for Standardization

DIN EN 2003-009:2007-07 Aerospace series - Test methods - Titanium and titanium alloys - Part 009: Determination of surface contamination; German and English version EN 2003-009:2007

European Committee for Standardization (CEN)

EN 2003-009:2007 Aerospace series - Test methods - Titanium and titanium alloys - Part 009: Determination of surface contamination

Others: Technical requirements and detection methods of continuous monitoring system for flue gas emission from fixed pollution sources,Stationary pollution source detection method,Technical requirements and detection methods for continuous monitoring system of flue gas emitted by fixed pollution sources,Technical requirements and detection methods of continuous monitoring system for stationary pollution source emissions,Technical requirements and testing methods for continuous monitoring system of flue gas emission from fixed pollution sources,"Technical Requirements and Testing Methods for Continuous Monitoring System of Flue Gas Emission from Stationary Pollution Sources"