gas chromatography
gas chromatography, Total:200 items.
The international standard classification for "gas chromatography" includes: Equipment for the chemical industry , Protection against crime , Other standards related to optics and optical measurements , Chemical reagents , Chemical analysis , Cosmetics. Toiletries , Chemical technology (Vocabularies) , Power stations in general .
The Chinese standard classification for "gas chromatography" includes: Legal medical expert , Crime judging technology , Basic standards and general methods , chromatograph , Chemical reagent in general , Industrial gas and chemical gas , Fuel oil , Cosmetics , Basic standards and general methods , Electric power testing technique .
Professional Standard - Chemical Industry
- HG/T 4095-2009 On-line gas chromatograph for chemical process
- HG/T 4095-2023 Online gas chromatograph for chemical industry
- HG/T 4320-2012 Inorganic Chemicals for Industrial Use - General Rules for Gas Chromatographic Analysis
Professional Standard - Judicatory
- SF/Z JD0107002-2010 Determination of cyanide in blood by gas chromatography
- SF/T 0113-2021 Determination of cyanide in blood by gas chromatography-mass spectrometry and gas chromatography
Professional Standard - Public Safety Standards
- GA/T 1327-2016 GC, GC-MS and LC-MS/MS examination methods for zolpidem in biological samples in forensic science
- GA/T 1615-2019 Forensic sciences—Examination methods for clozapine in biological samples—GC and GC-MS
- GA/T 933-2011 GC and GC-MS examination methods for monofluorocetate anion in biological samples
- GA/T 2024-2023 Forensic sciences-Examination methods for 5-MeO-DiPT and 5-MeO-MiPT in suspected drugs-GC and GC-MS
- GA/T 1915-2021 Forensic sciences—Examination methods for hydrogen sulfide in biological samples—GC and GC-MS
- GA/T 2038-2023 Forensic sciences-Examination methods for tramadol in suspecteddrugs-GC and CC-MS
- GA/T 2051-2023 Forensic sciences-Examination method for bromine in suspected precursor chemicals-GC and GC-MS
- GA/T 208-2019 Forensic sciences—Examination methods for phosphide in biological samples—HSGC and HSGC-MS
- GA/T 1789-2021 Forensic sciences-Examination methods for hydroxylimine in suspected precursors-LC-MS,GC-MS and HPLC
- GA/T 1989-2022 Forensic sciences—Examination methods for promethazine in suspected drugs一GC and GC-MS
- GA/T 1008.2-2013 GC and GC-MS examination methods for drugs—Part 2:Morphine
Professional Standard - Hygiene
- WS/T 173-1999 Workplace air. Determination of carbon monoxide. Gas chromatographic method
- WS/T 41-1996 Exhaled air - Determination of carbon disulfide - Gas chromatographic method
- WS/T 160-1999 Workplace air. Determination of furfuryl alcohol. Gas chromatographic method
- WS/T 173-99 Gas chromatography method for determination of carbon monoxide in workplace air
- WS/T 165-1999 Workplace air. Determination of iso-octanol. Gas chromatographic method
Group Standards of the People's Republic of China
- T/CRIAC 0101-2025 Chemical reagents Gas chromatography reference substance Toluene
- T/CRIAC 0102-2025 Chemical reagents Gas chromatography reference substance Chlorobenzene
- T/CRIAC 0104-2025 Chemical reagents Reference substance for gas chromatography n-heptane
- T/CRIAC 0103-2025 Chemical reagents Gas chromatography reference substance n-hexane
- T/WSJD 18.9-2021 Gas Chromatography for the Determination of Methyl Isoamyl Ketone in the Air of the Workplace
- T/LNIQA 017-2024 Determination of chloropicrin residues in grain crops Gas chromatography
- T/WSJD 18.22-2024 Portable gas chromatography-mass spectrometry for determination of bischloromethyl ether in workplace air
- T/WSJD 18.6-2021 Gas Chromatography for the Determination of Difluorochloromethane in Chemical Factors in the Air of the Workplace
- T/SATA 016-2019 Determination of organic chloride compounds in motor gasoline by gas Chromatography
- T/WSJD 18.21-2024 Determination of chemical factors in workplace air - Gas chromatographic method for n-butylmercaptan
- T/CRIAC 0100-2025 Chemical reagents Gas chromatography reference substance ethyl acetate
- T/WSJD 18.18-2024 Determination of chemical factors in workplace air Gas chromatography method for 1,4-dioxane
- T/CRIAC 0085-2023 Chemical reagent — Reference material for gas chromatography — Isopropanol
- T/WSJD 18.8-2021 Gas Chromatography for Determination of Tributyl Phosphate in Chemical Factors in Workplace Air
- T/CRIAC 0106-2025 Chemical reagents Gas chromatography reference substance tetrachloroethylene
- T/GAIA 014-2022 Determination of alcohols in workplace air—Thermal desorption gas chromatography mass spectrometry method
- T/CQCAA 0008-2021 Determination of 5 phenolics compounds in whitening cosmetics by Gas chromatography -tandem mass spectrometry method
- T/WSJD 18.11-2021 Gas Chromatography for the Determination of Dimethylaniline in the Air of the Workplace
- T/CRIAC 0089-2023 Chemical reagent — Reference material for gas chromatography — Methanol
- T/CRIAC 0087-2023 Chemical reagent — Reference material for gas chromatography — Cyclohexane
- T/WSJD 18.17-2024 Determination of chemical factors in workplace air - Gas chromatography method for methyl tert-butyl ether
- T/CRIAC 0086-2023 Chemical reagent — Reference material for gas chromatography — Dichloromethane
- T/CNIA 0060-2020 Determination of phosphine content in hydrogen for polysilicon by gas chromatography
- T/CRIAC 0107-2025 Chemical reagents Gas chromatography reference substance chloroform
- T/WSJD 18.19-2024 Determination of chemical factors in workplace air - Gas chromatography method for methylene chloride
- T/WSJD 18.5-2021 High Performance Liquid Chromatography for the Determination of Hydrazine in the Air of the Workplace
- T/CRIAC 0098-2025 Chemical reagents Gas chromatography reference substance n-butanol
- T/WSJD 18.10-2021 Gas Chromatography for the Determination of Methyl Methacrylate by Chemical Factors in the Air of the Workplace
- T/CRIAC 0099-2025 Chemical reagents Gas chromatography reference substance acetone
- T/CRIAC 0088-2023 Chemical reagent — Reference material for gas chromatography — Ethanol
- T/CRIAC 0105-2025 Chemical reagents Gas chromatography reference substance n-octane
- T/CSES 133-2023 Soil-Determination of short chain chlorinated paraffins—Gas chromatography- mass spectrometry
Professional Standard - Machinery
- JB/T 5225-1991 Standard Chromatographic Column for Testing of Gas Chromatograph
- JB/T 9361-1999 Test method for flame ionization detector of gas chromatography
- JB 5225-1991 Standard chromatographic column for gas chromatograph testing
- JB/T 5227.1-1991 Pipeline accessories for gas chromatograph
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 39883-2021 Examination methods for morphine in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
- GB/T 30430-2019 Standard column used for evaluating gas chromatographs
- GB/T 29672-2013 Determination of acrylonitrile in cosmetics—Gas chromatography-mass spectrometry
- GB/T 39875-2021 Examination methods for chlordiazepoxide in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
- GB/T 39874-2021 Examination methods for bromazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
- GB/T 39876-2021 Examination methods for cocaine in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
- GB/T 9722-2006 Chemical reagent—General rules for the gas chromatography
- GB/T 36946-2018(英文版) Leather Chemical tests Determination of polycyclic aromatic hydrocarbons Gas chromatography-mass spectrometry
- GB/T 4946-2008 Terms of gas chromatography
- GB 20077663-T-604 Flame ionization detector test method for gas chromatography/supercritical fluid chromatography
- GB/T 39877-2021 Examination methods for diazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
- GB/T 32693-2016 Determination of the aniline compounds in gasoline一By gas chromatography-mass spectrometry
- GB/T 29636-2013 GC ,HPLC and GC-MS examination methods for methylamphetamine in suspected drug
- GB/T 30430-2013 Standard Column Used for Evaluating Gas Chromatography
- GB/T 39880-2021 Examination methods for methadone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
- GB/T 40891-2021 Determination of lyral in cosmetics—Gas chromatography-mass spectrometry
- GB/T 9722-2023 Chemical reagent—General rules for the gas chromatography
- GB/T 39885-2021 Examination methods for triazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
- GB/T 29637-2013 GC and GC-MS examination methods for ketamine in suspected drug
- GB/T 33646-2017 Determination of the ester compounds in motor rasoline. Gas chromatography
- GB/T 29635-2013 GC and GC-MS examination methods for heroin in suspected drug
- GB/T 46325-2025 Determination of Free Sulfur Content in Vulcanized Rubber - Gas Chromatography (GC) and High Performance Liquid Chromatography (HPLC)
- GB/T 29677-2013 Determination of nitromethane in cosmetics—Gas chromatography-mass spectrometry
- GB/T 32193-2015 Standard practice for testing flame ionization detectors used in gas or supercritical fluid chromatography
- GB 9722-1988 General Principles of Chemical Reagent Gas Chromatography
- GB/T 39881-2021 Examination methods for methaqualone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
- GB/T 39879-2021 Examination methods for five components in opium in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
- GB/T 10410.3-1989 Analysis of liquefied petroleum gas composition by gas chromatography
- GB/T 9722-1988 Chemical reagent-General rules for the gas chromatography
- GB/T 4946-1985 Terms of gas chromatography
- GB/T 28726-2012 Gas analysis—Gas chromatograph with helium ionization detector
- GB/T 39878-2021 Examination methods for estazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
- GB/T 43241-2023 Forensic sciences—Examination methods for nitrous oxide—Gas chromatography-mass spectrometry
- GB/T 28726-2025 Gas analysis Helium ionization gas chromatography
Professional Standard - Agriculture
- 85药典 四部-2015 0521 Gas chromatography
- 792兽药典 一部-2015 Appendix Contents 0500 Chromatography 0521 Gas Chromatography
- 186药典 三部-2015 Chromatography 0521 General Principles of Gas Chromatography 27
- 205药典 三部-2020 Chromatography 0521 Gas Chromatography
- 66药典 四部-2020 0521 Gas chromatography
- 159药典 三部-2010 Appendix III Chromatography IIIC Gas Chromatography
National Metrological Technical Specifications of the People's Republic of China
- JJF(建材) 203-2023 Specification for calibration of micro gas chromatographic columns for portable gas chromatographs
- JJF 1164-2018 Calibration Specification for Gas Chromatography-Mass Spectrometries
National Metrological Verification Regulations of the People's Republic of China
- JJG 700-2016 Verification Regulation of Gas Chromatograph
Professional Standard - Energy
- NB/SH/T 0230-2019 Determination of composition in Vquefied petroleum gases勿gas chromatography
Professional Standard - Environmental Protection
- HJ 744-2015 water quailty - Determination of penols compounds - Gas chromatography mss spectrometry
- HJ 739-2015 Ambient air - Determination of nitroaromatics - Gaschromatography mass spectrometry
Jilin Provincial Standard of the People's Republic of China
- DB22/T 2292-2015 Determination of Cantharidin in Cosmetics by Gas Chromatography-Mass Spectrometry
Shandong Provincial Standard of the People's Republic of China
- DB37/T 2652-2015 Determination of Esters in Motor Gasoline by Gas Chromatography
- DB37/T 649-2006 Determination of multi-residue pesticides in oil crops by gas chromatography
- DB37/T 3311-2018 Determination of Nitrogen Mustard in Cosmetics by Gas Chromatography
Professional Standard - Commodity Inspection
- SN/T 2492-2010 Determination of molecular weight of liquefied petroleum gas—Gas chromatography
- SN/T 5112-2019 Determination of propylene glycol in edibe animals and feeds for import and export - GC Method and GC-MS method
Inner Mongolia Provincial Standard of the People's Republic of China
- DB15/T 1427-2018 Determination of Dimethyl Sulfate in Workplace Air by Gas Chromatography-Mass Spectrometry
Professional Standard - Petroleum
- SY/T 7483-2020 Determination of sulfur compounds in natural gas by on-line gas chromatography
- SY 5191-2011 Gas Chromatography Mud Logging Instrument
- SY/T 5191-2011 Gas Chromatograph Mud Logging Unit
Professional Standard - Nuclear Industry
- EJ/T 651-1992 Nickel-63β Radioactive Source for Gas Chromatography
Guangdong Provincial Standard of the People's Republic of China
- DB44/T 1711-2015 Determination of Chlorobenzene Compounds in Aerosol by Gas Chromatography-Mass Spectrometry
Professional Standard - Water Conservancy
- SL/T 787-2019 Water quality- Determination of chlorobenzenes Solid phase extraction Gas chromatography mass spectronetry
- SL 463-2009 Determination of phenols in water by gas chromatography
Professional Standard - Energy and Power Planning
- DL/T 920-2005 Determination of air and carbon tetrafluoride content in sulphur hexafluoride by gas chromatography method
Professional Standard - Tobacco
- YC/T 559-2018 Determination of alkaloids, a characteristic component of tobacco, by gas chromatography-mass spectrometry and gas chromatography-tandem mass spectrometry
Liaoning Provincial Standard of the People's Republic of China
- DB21/T 2975-2018 Determination of Toxic Substances in Workplace Air by Gas Chromatography-Electron Capture Method
Professional Standard - Ferrous Metallurgy
- YB/T 4990-2022 Coking light oil--Determination of the phenol content--Gas chromatography
- YB/T 4496-2015 Coke oven gas. Determination of the hydrogen sulfide content. Gas chromatography
American Society for Testing and Materials (ASTM)
- ASTM D1946-90(2006) Standard Practice for Analysis of Reformed Gas by Gas Chromatography
- ASTM D1946-90(2015)e1 Standard Practice for Analysis of Reformed Gas by Gas Chromatography
- ASTM D1946-90(2011) Standard Practice for Analysis of Reformed Gas by Gas Chromatography
- ASTM E260-96(2006) Standard Practice for Packed Column Gas Chromatography
- ASTM D6060-96 Standard Practice for Sampling of Process Vents With a Portable Gas Chromatograph
- ASTM E260-96(2011) Standard Practice for Packed Column Gas Chromatography
- ASTM E594-96(2006) Standard Practice for Testing Flame Ionization Detectors Used in Gas or Supercritical Fluid Chromatography
- ASTM E355-96(2007) Standard Practice for Gas Chromatography Terms and Relationships
- ASTM E594-96(2011) Standard Practice for Testing Flame Ionization Detectors Used in Gas or Supercritical Fluid Chromatography
- ASTM E3296-22 Standard Guide for Using Pyrolysis Gas Chromatography and Pyrolysis Gas Chromatography-Mass Spectrometry in Forensic Polymer Examinations
Korean Agency for Technology and Standards (KATS)
- KS I ISO 19739-2010(2021) Natural gas-Determination of sulfur compounds using gas chromatography
- KS I ISO 19739-2010(2016) Natural gas-Determination of sulfur compounds using gas chromatography
- KS I ISO 19739-2023 Natural gas — Determination of sulfur compounds using gas chromatography
- KS M 6905-2021 Leather — Determination of the perfluorinated compounds(PFCs) by gas chromatography-tandem mass spectrometry(GC-MS/MS) and liquid chromatography-tandem mass spectrometry(LC-MS/MS)
- KS I ISO 19739:2010 Natural gas-Determination of sulfur compounds using gas chromatography
- KS I ISO 9486-2022 Workplace air Determination of vaporous chlorinated hydrocarbons Charcoal tube/solvent desorption/ gas chromatographic method
- KS M 0031-2022 General rules for gas chromatographic analysis
- KS M ISO 2718:2004 Standard layout for a method of chemical analysis by gas chromatography
- KS M ISO 10638:2012 Rubber-Identification of antidegradants by gas chromatography/mass spectrometry
British Standards Institution (BSI)
- BS EN ISO 19739:2005 Natural gas - Determination of sulfur compounds using gas chromatography
- BS EN ISO 19739:2004 Natural gas. Determination of sulfur compounds using gas chromatography
- BS ISO 19739:2004 Natural gas. Determination of sulfur compounds using gas chromatography
- BS 7276:1990 Method for gas chromatographic analysis of liquefied petroleum gas
- BS ISO 20163:2019 Vulcanized rubber. Determination of free sulfur by gas chromatography (GC) and high performance liquid chromatography (HPLC)
- BS EN ISO 19739:2005(2010) Natural gas — Determination of sulfur compounds using gas chromatography
- BS EN ISO 21253-1:2019 Water quality. Multi-compound class methods - Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry
- BS 3282:1963 Glossary of terms relating to gas chromatography
- BS 5443:1977 Recommendations for a standard layout for methods of chemical analysis by gas chromatography
- 25/30480159 DC BS EN 18261 Compost and digestate - Determination of polycyclic aromatic hydrocarbons (PAH) by gas chromatography (GC) and high performance liquid chromatography (HPLC)
- BS ISO 23874:2007 Natural gas - Gas chromatographic requirements for hydrocarbon dewpoint calculation
Association Francaise de Normalisation
- NF X20-511*NF EN ISO 19739:2006 Natural gas - Determination of sulfur compounds using gas chromatography.
- NF EN ISO 19739:2006 Natural gas - Determination of sulfur compounds by gas chromatography
- NF T01-004:1968 Chemical industries. Gas chromatography. Terms and symbols.
- NF T01-005:1969 Chemical industries. Standard layout for methods of chemical analysis by gas chromatography.
- NF EN ISO 21253-1:2019 Water quality - Methods for analyzing multi-class compounds - Part 1: criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry
Ente Nazionale Italiano di Unificazione
- EC 1-2010 UNI EN ISO 19739:2007 Natural gas - Determination of sulfur compounds using gas chromatography
- UNI EN ISO 19739:2007 Natural gas - Determination of sulfur compounds using gas chromatography
- UNI EN ISO 21253-1:2019 Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry
German Institute for Standardization
- DIN EN ISO 19739:2009-08 Natural gas - Determination of sulfur compounds using gas chromatography (ISO 19739:2004); German version EN ISO 19739:2005 + AC:2009
- DIN EN ISO 19739:2006-03 Natural gas - Determination of sulfur compounds using gas chromatography (ISO 19739:2004)
- DIN EN ISO 21253-1:2022-12 Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry (ISO 21253-1:2019); German version EN ISO 21253-1:2019
Danish Standards Foundation
- DANSK DS/EN ISO 19739:2005 Natural gas - Determination of sulfur compounds using gas chromatography
- DS/EN ISO 19739:2006 Natural gas - Determination of sulfur compounds using gas chromatography
- DS/EN ISO 19739/AC:2009 Natural gas - Determination of sulfur compounds using gas chromatography
- DANSK DS/EN ISO 19739/AC:2009 Natural gas - Determination of sulfur compounds using gas chromatography
- DANSK DS/ISO 21253-1:2019 Water quality – Multi-compound class methods – Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry
Spanish Association for Standardization (UNE)
- UNE-EN ISO 19739:2006/AC:2009 Natural gas - Determination of sulfur compounds using gas chromatography (ISO 19739:2004/Cor 1:2009)
- UNE-EN ISO 19739:2006 Natural gas - Determination of sulfur compounds using gas chromatography (ISO 19739:2004)
- UNE-EN ISO 21253-1:2020 Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry (ISO 21253-1:2019)
- UNE 84014:2002 Cosmetic raw materials. Aliphatic alcohols. Determination of the purity by gas chromatography.
Japanese Industrial Standards Committee (JISC)
- JIS K 0123:2018 General rules for gas chromatography / mass spectrometry
- JSA JIS K 0114-2012 General Rules for Gas Chromatography
- JIS K 0123:2006 General rules for gas chromatography/mass spectrometry
- JIS K 0114:2012 General rules for gas chromatography
- JIS K 0123:1995 General rules for analytical methods in gas chromatography mass spectrometry
Gosstandart of Russia
- GOST 35228-2024 Liquefied hydrocarbon gases. Determination of sulfur-containing compounds by gas chromatography
Magyar Szabványügyi Testület
- MSZ 21862/25-1983 Detection of gaseous pollutants in the workplace, gas chromatography testing of chlorinated hydrocarbons
Kingdom of Bahrain Testing and Metrology Directorate
- BH GSO ISO 19739:2015 Natural gas -- Determination of sulfur compounds using gas chromatography
- BH GSO ISO 21253-1:2022 Water quality — Multi-compound class methods — Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry
Polski Komitet Normalizacyjny (PKN)
- PN Z04213-02-1989 Air purity protection Tests for nitroglycerin Determination of nitroglycerin in work places by gas chromatography
The Directorate General of Specifications and Metrology (DGSM)
- OS GSO ISO 19739:2014 Natural gas -- Determination of sulfur compounds using gas chromatography
- OS GSO ISO 9486:2017 Workplace air -- Determination of vaporous chlorinated hydrocarbons -- Charcoal tube/solvent desorption/gas chromatographic method
International Organization for Standardization (ISO)
- ISO 19739:2004 Natural gas - Determination of sulfur compounds using gas chromatography
- ISO 20163:2019 Vulcanized rubber — Determination of free sulfur by gas chromatography (GC) and high performance liquid chromatography (HPLC)
- ISO 21253-1:2019 Water quality — Multi-compound class methods — Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry
- ISO 5921:1982 Chlorofluorohydrocarbons for industrial use; Analysis by gas chromatography; General principles
- ISO 2718:1974 Standard layout for a method of chemical analysis by gas chromatography
- ISO 6569:1981 Natural gas; Rapid analysis by gas chromatography
Finnish Standards Institute
- SFS-EN 16423:2014 Liquefied petroleum gases. Determination of dissolved residue. Gas chromatographic method using liquid, on-column injection
- SFS-EN ISO 19739:2006 Natural gas. Determination of sulfur compounds using gas chromatography (ISO 19739:2004)
GCC Standardization Organization
- GSO ISO 9486:2017 Workplace air -- Determination of vaporous chlorinated hydrocarbons -- Charcoal tube/solvent desorption/gas chromatographic method
- OS GSO ASTM D1946:2024 Standard Practice for Analysis of Reformed Gas by Gas Chromatography
- GSO ASTM D1946:2024 Standard Practice for Analysis of Reformed Gas by Gas Chromatography
European Committee for Standardization (CEN)
- EN ISO 21253-1:2019 Water quality - Multi-compound class methods - Part 1: Criteria for the identification of target compounds by gas and liquid chromatography and mass spectrometry (ISO 21253-1:2019)
Lithuanian Standards Office
- LST EN ISO 19739:2006 Natural gas - Determination of sulfur compounds using gas chromatography (ISO 19739:2004)
Yugoslav Association for Standardization
- JUS H.F8.152-1986 Gases. Determination ofcarbon dioxid content. Gas chromatographic methctC/
Society of Automotive Engineers (SAE)
- SAE J1151-1988 METHANE MEASUREMENT USING GAS CHROMATOGRAPHY
Bureau of Indian Standards
- IS 15207-2002 Workplace Air - Determination of Vaporous Chlorinated Hydrocarbons - Charcol Tube/Solvent Desorption/Gas Chromatographic Method
gas chromatography,gas chromatography,Gas Chromatography Normalization,gas chromatography air action,gas chromatography air action,The role of gas chromatography,Gas Chromatography Normalization Method,Gas Chromatography Normalization Method,Gas Chromatography Tube Function,The role of air in gas chromatography,ionization gas chromatography,ionization gas chromatography,GC derivatization,Helium Ionization Gas Chromatography,gas chromatography,gas chromatography,Gas chromatography silanization,The role of air in gas chromatography,Methanation Gas Chromatography,Action Gas Chromatography