Determination of nitrogen content in soil using spectrophotometry

Determination of nitrogen content in soil using spectrophotometry, Total:126 items.

The international standard classification for "Determination of nitrogen content in soil using spectrophotometry" includes: Pharmaceutics , General methods of tests and analysis for food products , Non-metalliferous minerals , Cereals, pulses and derived products , Ferroalloys , Ferrous metals in general , Iron ores , Chemical analysis of metals .

The Chinese standard classification for "Determination of nitrogen content in soil using spectrophotometry" includes: Basic standards and general methods on chemical fertilizers , Soil and fertilizer in general , Metallurgical auxiliary material ore , Cereal crop and forage crop in general , Steel and iron alloy analysis method , Iron ore , Fuel oil , Light metals and their alloys analysis method , Heavy metals and their alloys analysis method , Basic standards and general methods for water treatment agent .

Professional Standard - Agriculture

GB 6260-1986 Determination of rare earth oxide content in soil--Chlorophosphonazo-p-hippuric acid photometric method
NY/T 2332-2013 Determination of total sugars in red ginseng—Spectrophotometry
NY/T 30-1986 Determination of rare earth oxide content in soil - Chlorophonazo - P - Hippuric acid photometric method
NY/T 2335-2013 Determination of pentosans in cereal—Spectro-photometric method
NY/T 1116-2006 Fertilizers - Determination of nitrate nitrogen content - Ultraviolet spectro - Photometric method

Heilongjiang Provincial Standard of the People's Republic of China

DB23/T 2963-2021 Determination of Trace Calcium Content in Natural Flake Graphite by Calcium-Arsenazo Ⅲ Spectrophotometric Method
DB23/T 1382-2010 Spectrophotometric method for determination of urea content in feed

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

GB/T 6730.89-2024 Iron ores—Determination of thorium content—Arsenazo Ⅲ spectrophotometric method
GB 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB/T 4699.3-2007 Ferrochromium silicochromium and nitrogen-bearing ferrochromium—Determination of phosphorus content—Molybdobismuthylphosphoric blue spectrophotometric method and the molybdenum blue s
GB/T 24583.5-2009 Vanadium-Nitrogen alloy—Determination of phosphorus content—The bismuth molybdenum blue spectrophotometry method
GB/T 5195.10-2006 Fluorspar - Determination of iron content - 1, 10-phenanthroline spectrophotometric method
GB/T 7630-1987 The tribromoarsenazo photometric method for the determination of rare earth oxide content in rice and wheat
GB/T 4702.7-2016 Chromium metal─Determination of nitrogen content─Distillation-nessler reagent spectrophotometric method
GB/T 6730.44-2017(英文版) Iron ore - Determination of zinc content - 1-(2-pyridyl azo)-2-naphthol spectrophotometric method
GB/T 6730.24-2006 Iron ores - Determination of total rare earth contents - Chlorophosphonazo mA spectrophotometric method
GB/T 223.70-2008 Iron steel and alloy - Determination of iron contents - O-phenanthroline spectrophotometric method
GB/T 32737-2016 Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method
GB/T 24583.5-2019(英文版) Determination of phosphorus content in vanadium-nitrogen alloys - Bismuth phosphomolybdenum blue spectrophotometric method

Group Standards of the People's Republic of China

T/HNNMIA 91-2023 Bauxite-Determination of vanadium content-Spectrophotometric method
T/SDAQI 035-2021 Determination of iron oxide content in bauxite Sulfosalicylic acid spectrophotometric method
T/NAIA 007-2020 Determination of titanium content in soil, grass and feces diantipyrine methane spectrophotometric method
T/NAIA 097-2021 Determination of total phenolic content in Lycium barbarum by spectrophotometric method
T/SDAQI 034-2021 Determination of chromium (VI) in fertilizers-Spectrophotometric

工业和信息化部

YB/T 4582.6-2017 Ferrosilicon nitride-Determination of manganese content-Sodium periodate spectrophotometric method
YB/T 4582.2-2017 Ferrosilicon nitride. Determination of chromium content. Diphenylcarbonhydrazide spectrophotometric method
YB/T 4582.9-2017 Ferrosilicon nitride. Determination of titanium content. Diantipyrylmethane spectrophotometric method
YB/T 4582.3-2017 Ferrosilicon nitride-Determination of phosphorus content-Bismuth phosphomolybdate blue spectrophotometric method
YB/T 4566.6-2016 Ferrovanadium nitride. Determination of phosphorus content. Molybdobismuthylphosphoric blue spectrophotometric method

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 24583.5-2019 Vanadium-nitrogen—Determination of phosphorus content—Bismuth molybdenum blue spectrophotometric method
GB/T 223.37-2020 Iron, steel and alloy—Determination of nitrogen content—Indophenol blue spectrophotometric method after distillation separation

Professional Standard - Petrochemical Industry

SH/T 0020-1990 Determination of phosphorus content in gasoline (Spectrophotometric method)
SH/T 0182-1992 Determination of copper content in light petroleum (spectrophotometric method)
SH/T 0705-2001 Standard test method for determination of vanadium in heavy oils by spectrophotometry

Professional Standard - Ferrous Metallurgy

YB/T 5330-2009 Vanadium pentoxid - Determination of iron content-The ortho-phenanthroline spectrophotome method

Professional Standard - Aviation

HB 5297.17-2001 Methods for Chemical Analysis of Titanium Alloys - Determination of Zirconium Content by Arsenazo iii Photometric Method
HB 5422.23-1989 Chemical Analysis Methods for Copper Alloy - Arsenazo III Absorption Photometry for the Determination of Zirconium Content
HB 5220.42-1995 Determination of Cerium Content by DBC-Arsenazo Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB 5220.43-1995 Determination of Lanthanum Content by DBC-Arsenazo Absorption Spectrophotometry Method for Chemical Analysis of Superalloys
HB 5297.20-2001 Methods for Chemical Analysis of Titanium Alloys - Determination of Cerium Content by Chlorophosphonazo III Spectrophotometric Method

Shandong Provincial Standard of the People's Republic of China

DB37/T 3314-2018 Determination of Alginic Acid Content in Fertilizer by Spectrophotometry
DB37/T 3313-2018 Determination of Chitosan Content in Fertilizer by Spectrophotometry

Professional Standard - Nuclear Industry

EJ/T 20167-2018 Determination of nitrogen content in reprocessed uranium trioxide powder by distillation-Nessler reagent spectrophotometry

Professional Standard - Non-ferrous Metal

YS/T 746.16-2010 Methods for chemical analysis of lead-free tin-based solders—Part 16:Determination of total rare earth content—Arserazo Ⅲ spectrophotometry

Jilin Provincial Standard of the People's Republic of China

DB22/T 1670-2012 Determination of lignin content in ginseng by spectrophotometry
DB22/T 2288-2015 Determination of Phospholipid Content in Deer Antler by Spectrophotometry

Yunnan Provincial Standard of the People's Republic of China

DB53/T 729-2015 Determination of germanium content in zinc materials spectrophotometric method

中国石油化工总公司

SH/T 0167-1992 Determination of arsenic content in reformed feed oil (spectrophotometric method)

Professional Standard - Petroleum

SY/T 0530-1993 Spectrophotometric method for the determination of oil content in oilfield sewage
SY 0530-2011 Spectrophotometric method for determination of oil content in oilfield produced water

Professional Standard - Commodity Inspection

SN/T 3810-2014 Determination of nitrogen content in urea and ammonium sulfate- Fluorescent spectrometry for X-ray

农业农村部

NY/T 3676-2020 Determination of total triterpene in ganoderma- Spectrophotometric method

Professional Standard - Chemical Industry

HG/T 4327-2012 Reclaimed water—Determination of total iron content—Spectrophotometric method

国家能源局

SH/T 0966-2017 Determination of aromatic hydrocarbon content in white oil by UV spectrophotometry

SCC

UNE 36317-1:1985 DETERMINATION OF NITROGEN CONTENT OF STEELS. SPECTROPHOTOMETRIC METHOD
DANSK DS/EN ISO 4945:2009 Steel – Determination of nitrogen content – Spectrophotometric method
NS-EN 10179:2024 Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method
NS-EN ISO 4945:2009 Steel — Determination of nitrogen content — Spectrophotometric method (ISO 4945:1977)
AENOR UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
SPC GB/T 24583.5-2019 Vanadium-nitrogen -- Determination of phosphorus content -- Bismuth molybdenum blue spectrophotometric method (TEXT OF DOCUMENT IS IN CHINESE)
DANSK DS/EN ISO 5378:1994 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method
NS-EN ISO 5378:1994 Starches and derived products — Determination of nitrogen content by the Kjeldahl method — Spectrophotometric method (ISO 5378:1978)
DIN EN 10179 E:2023 Draft Document - Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023
BS 5697-2:1979 Methods of test for starch and its derivatives and by-products. Determination of nitrogen conteny by the Kjeldahl method ( spectrophotometric method)

Korean Agency for Technology and Standards (KATS)

KS D ISO 4945-2002(2017) Steel－Determination of nitrogen content－Spectrophotometric method
KS D ISO 4945:2002 Steel－Determination of nitrogen content－Spectrophotometric method
KS H ISO 5378-2023 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS H ISO 5378-2008(2018) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS H ISO 5378:2008 Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method

European Committee for Standardization (CEN)

EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
EN 10179:1989 Chemical Analysis of Ferrous Materials - Determination of Nitrogen (Trace Mounts) in Steel Spectrophotometric Method

International Organization for Standardization (ISO)

ISO 4945:1977 Steel; Determination of nitrogen content; Spectrophotometric method
ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method
ISO 2991:1974 Nitric acid for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method
ISO 5378:1978 Starches and derived products; Determination of nitrogen content by the Kjeldahl method; Spectrophotometric method
ISO 8556:1986 Aluminium ores; Determination of phosphorus content; Molybdenum blue spectrophotometric method
ISO 2899:1974 Sulphuric acid and oleums for industrial use; Determination of ammoniacal nitrogen content; Spectrophotometric method

CEN - European Committee for Standardization

EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method

German Institute for Standardization

DIN EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977); German version EN ISO 4945:2009
DIN EN 10179:2023-07 Steels - Determination of nitrogen (trace amounts) - Spectrophotometric method; German and English version prEN 10179:2023 / Note: Date of issue 2023-05-26*Intended as replacement for DIN EN 10179 (1990-04).
DIN EN ISO 5378:1994-10 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978); German version EN ISO 5378:1994
DIN EN ISO 4945:2019-03 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018); German version EN ISO 4945:2018

Danish Standards Foundation

DS/EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
DS/EN 10179:1989 Chemical analysis of ferrous materials. Determination of nitrogen (trace amount) in steels. Spectrophotometric method
DS/EN ISO 5378:1995 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophometric method

GSO

OS GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
GSO ISO 5378:2015 Starches and derived products -- Determination of nitrogen content by the Kjeldahl method -- Spectrophotometric method
GSO ISO 4945:2015 Steel -- Determination of nitrogen content -- Spectrophotometric method
NB/T 11531-2024 Determination of total phosphorus, ammonia nitrogen and permanganate index in coal mine water - Flow injection-spectrophotometry
NB/SH/T 0966-2017 Determination of aromatics content in white oil - UV spectrophotometry

British Standards Institution (BSI)

BS EN ISO 4945:2010 Steel. Determination of nitrogen content. Spectrophotometric method
BS EN ISO 4945:2009 Steel - Determination of nitrogen content - Spectrophotometric method
BS EN ISO 4945:2018 Steel. Determination of nitrogen. Spectrophotometric method

RO-ASRO

STAS SR 13257-1996 COFFEE Determination of nitrogen content by the Kjeldahi method Spectrophotometric method
STAS SR EN 10179-1994 Chemicat analysis of ferrous materials - Determination of nitrogen (trace amounts) in steel - Spectrophotometric method
STAS SR 9763-13-1996 Spices and condiments. Determination of nitrogen content by the Kjeldahl method. Spectrophotometric method

AENOR

UNE-EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
UNE-EN ISO 5378:1995 STARCHES AND DERIVED PRODUCTS. DETERMINATION OF NITROGEN CONTENT BY THE KJELDHAL METHOD. SPECTROPHOTOMETRIC METHOD. (ISO 5378:1978).

Lithuanian Standards Office

LST EN ISO 4945:2010 Steel - Determination of nitrogen content - Spectrophotometric method (ISO 4945:1977)
LST EN ISO 5378:2000 Starches and derived products - Determination of nitrogen content by the Kjeldahl method - Spectrophotometric method (ISO 5378:1978)

CZ-CSN

CSN EN 10 179-1993 Chemical analysis of ferrous metals — Determination of nitrogen (trace amounts) in steels — Spectrophotometric method

YU-JUS

JUS H.B8.287-1983 Fertilizers. Determination of content amid-nitrogen. Spectrophotometric method
JUS H.B8.637-1981 Sulphuric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method
JUS H.B8.815-1992 Straight ammonium nitrate fertilizers of high nitrogen content - Determination of copper content - Atomic absorption spectrophotometric method
JUS H.G8.418-1991 Reagents. Sodium hvdroxide. Determination of arsenic content. Silver diethvldithiocarbamate spectrophotometric method
JUS H.G8.130-1984 Reagents. Ammonia solution. Determination of iron content. 1,10—Phenanthrolinespectrophotometric method

KR-KS

KS H ISO 5378-2008(2023) Starches and derived products－Determination of nitrogen content by the Kjeldahl method－Spectrophotometric method
KS D ISO 4945-2022 Steel — Determination of nitrogen — Spectrophotometric method

TR-TSE

TS 2466-1976 Nitric Acit For Industrial Use Determination of Ammoniacal Nitrogen Content Spectrophotoraetric Method
TS 3651-1981 METHODS FOR THE ANALYSIS OF WATER — DETERMINATION OF IRON CONTENT — 1,10 Phenanthroline Spectrophotometry Method

Association Francaise de Normalisation

NF T20-286:1982 Nitric acid for industrial use. Determination of ammoniacal nitrogen content. Spectrophotometric method.
NF V03-608*NF EN ISO 5378:1994 Starches and derived products. Determination of nitrogen content by the kjeldahl method. Spectrophotometric method.
NF A06-323:1987 Chemical analysis of steels. Determination of nitrogen content. Molecular absorption spectrophotometric method.
NF A06-555:2010 Steel - Determination of nitrogen content - Spectrophotometric method.
NF A06-555*NF EN ISO 4945:2018 Steel - Determination of nitrogen - Spectrophotometric method

IT-UNI

UNI 7336-1974 Chemical analysis of ferrous materials. Determination of nitrogen in steel. Spectrophotometric method.

BE-NBN

NBN T 03-041-1979 Nitric acid for industrial use - Determination of ammoniacal nitrogen content - Spectrophotometric method
NBN-EN 10179-1992 Chemical analysis of ferrous materials. Determination of nitrogen (trace amounts) in steels. Spectrophotometric method

BSI

BS EN 10179:2024 Steels. Determination of nitrogen (trace amounts). Spectrophotometric method

RU-GOST R

GOST 30181.5-1994 Mineral fertilizers. Method for determination of mass fraction of amide nitrogen in compound fertilizers (spectrophotocolorimetric method)

Indonesia Standards

SNI 06-7129-2005 Test methods of chromium (IV) content in leather by spectrophotometers

ES-AENOR

UNE 36-317 Pt.1-1985 Determination of nitrogen in steel. Spectrophotometry

ES-UNE

UNE-EN ISO 4945:2019 Steel - Determination of nitrogen - Spectrophotometric method (ISO 4945:2018)

SE-SIS

SIS SS 02 81 45-1991 Determination ofoilin water — Infrared spectrophotometric method

American Society for Testing and Materials (ASTM)

ASTM UOP276-85 Pyrrole Nitrogen in Petroleum Distillates by Visible Spectrophotometry

PT-IPQ

NP 1841-1985 fish. Determination of trimethylamine nitrogen content (N-TMA). photometry

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