UV spectrophotometry of citric acid

UV spectrophotometry of citric acid, Total:88 items.

The international standard classification for "UV spectrophotometry of citric acid" includes: Biology. Botany. Zoology , Alcohols. Ethers , Analytical chemistry in general , Workplace atmospheres , Optics and optical measurements .

The Chinese standard classification for "UV spectrophotometry of citric acid" includes: Environmental Quality Standard for atmosphere, water and soil , Agriculture and forestry technology , Basic organic chemicals , Electrochemical, thermochemistry and optical profile type analyzer , Labor sanitation , Electron optics and other physical optics instrument , Chemical Measurement , Hydrogeological survey , Cosmetics .

Group Standards of the People's Republic of China

T/QAS 082.3-2022 Chemical Analysis of Rock Salt and Glauber's Salt Part 3: Determination of Nitrate by Ultraviolet Spectrophotometry
T/STIC 110086-2023 Double Beam UV-VIS Spectrophotometer
T/SATA 058-2023 Determination of ammonium ferric citrate in edible salt
T/QAS 035-2021 Determination of nitrate in brine by ultraviolet spectrophotometry

Professional Standard - Water Conservancy

SL 93.2-1994 Determination of oil and grease (Vltraviolet spectrophotometric method)
SL 84-1994 Determination of nitrogen(nitrate) (Ultraviolet spectrophtometric method)

Professional Standard - Environmental Protection

HJ 636-2012 Water quality. Determination of total nitrogen. Alkaline potassium persulfate digestion UV spectrophotometric method
HJ/T 346-2007 Water quality-Determination of nitrate-nitrogen-Ultraviolet spectrophotometry
HJ 756-2015 Water quality - Determination of butyl xanthate - UV spectrophotometric method

Professional Standard - Agriculture

197药典三部-2020 Spectrophotometry 0401 UV-Vis Spectrophotometry
47药典四部-2020 0401 UV-visible spectrophotometry
178药典三部-2015 Spectrophotometry 0401 UV-Vis Spectrophotometry General Principles 19
2297药典二部-2010 Appendix IV A UV-Vis Spectrophotometry
1759药典一部-2010 Appendix VA UV-Vis Spectrophotometry
67药典四部-2015 0401 UV-visible spectrophotometry
153药典三部-2010 Appendix Ⅱ Spectrophotometry ⅡA UV-Vis Spectrophotometry
NY/T 1279-2007 Determination of Nitrate in Vegetables and Fruits UV-spectrophotometer

中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会

GB/T 34796-2017 Quantification and purity analysis of nucleic acid concentration in solution-Ultraviolet spectrophotometry

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

GB 6912.1-1986 Determination of nitrate and nitrite - Nitrate UV photometric method
GB/T 32737-2016 Determination of nitrate nitrogen in soil—Ultraviolet spectrophotometry method
GB/T 26813-2011 Double beam UV/VIS spectrophotometer
GB/T 14571.4-2008 glycol for industrial use - Determination of ultraviolet transmittance - Ultraviolet spectrophotometric method
GB/T 11894-1989 Water quality--Determination of total nitrogen--Alkaline potassium persulfate digestion-UV spectro photometric method
GB/T 16077-1995 Workplace air―Determination of phosgene―Ultraviolet spectrophotometric method
GB 6912.2-1986 Determination of nitrate and nitrite - Nitrite UV photometric method
GB/T 34796-2017(英文版) Quantification and purity analysis of nucleic acid concentration in solution—Ultraviolet spectrophotometry
GB/T 26798-2011 Single beam UV/VIS spectrophotometer

Professional Standard - Machinery

JB/T 6777-1993 UV/VIS Spectrophotometer
JB/T 6778-1993 UV/VIS Near Infrared Spectrophotometer

National Metrological Verification Regulations of the People's Republic of China

JJG 689-1990 UV-VIS-NIR Spectrophotometer
JJG 682-1990 Verification Regulation of Double Beam UV-VIS Spectrophotometers
JJG(地质) 1002-1990 Verification Regulations for UV/Visible Spectrophotometer
JJG 178-2007 Ultraviolet,Visible,Near-Infrared Spectrophotometers
JJG 375-1996 UItraviolet Visible Range Spectrophotometer in Single Beam

国家质量监督检验检疫总局

SN/T 0859-2016 Determination of dehydroacetic acid in condiments for export- Ultraviolet spectrophotometric method

Military Standard of the People's Republic of China-General Armament Department

GJB 3639-1999 Determination of Benzene Chloroacetophenone UV Spectrophotometry
GJB 4781-1997*GJBz 20413.3-1997 Determination of Sies by UV spectrophotometry

Shandong Provincial Standard of the People's Republic of China

DB37/T 4149-2020 Determination of water quality UV254 by ultraviolet spectrophotometry

Professional Standard - Geology

DZ/T 0064.59-1993 Groundwater quality test methods - the determination of nitrate radical with ultraviolet spectrophotometric method
DZ/T 0064.59-2021 Methods for analysis of groundwater quality- Part 59: Determination of nitrate- Ultraviolet spectrophotometry

国家市场监督管理总局、中国国家标准化管理委员会

GB/T 14571.4-2022 Test method of ethylene glycol for industrial use—Part 4：Determination of ultraviolet transmittance—Ultraviolet spectrophotometric method

Professional Standard - Light Industry

QB/T 2334-1997 Method for the Qualitative Determination of Ultraviolet Absorbents in Cosmetics - Ultraviolet Spectrophotometry

Spanish Association for Standardization (UNE)

UNE 84170:1983 OIL OF LEMON. ULTRA-VIOLET SPECTROPHOTO METRIC ANALYSIS
UNE-EN 1137:1995 FRUIT AND VEGETABLE JUICES. ENZYMATIC DETERMINATION OF CITRIC ACID (CITRATE) CONTENT. NADH SPECTROMETRIC METHOD.
UNE 55047:1973 FATS. SPECTROPHOTOMETRIC MEASURE OF ABSORPTION IN THE ULTRAVIOLET AREA.
UNE-EN 1139:1995 FRUIT AND VEGETABLE JUICES. ENZYMATIC DETERMINATION OF D-ISOCITRIC ACID CONTENT. NADPH SPECTROMETRIC METHOD.

YU-JUS

JUS H.G8.116-1984 Reagents. Citric acid monohydrate. Determination of phosphate content. Spectrophotometric method
JUS H.B8.292-1983 Fertilizers. Determination of phosphorus content soluble in citric acid. Spectrophotometric method
JUS H.G8.121-1984 Reagents. Citric acid monohydrate. Determination of arsen/c content. Silver diethyldithiocarbamate photometric method

Danish Standards Foundation

DS/EN 1137:1995 Fruit and vegetable juices - Enzymatic determination of citric acid (citrate) content - NADH spectrometric method
DS/EN 1139:1995 Fruit and vegetable juices - Enzymatic determination of D-isocitric acid content - NADPH spectrometric method

Lithuanian Standards Office

LST EN 1137-2001 Fruit and vegetable juices - Enzymatic determination of citric acid (citrate) content - NADH spectrometric method
LST EN 1139-1999 Fruit and vegetable juices - Enzymatic determination of D-isocitric acid content - NADPH spectrometric method

Association Francaise de Normalisation

NF EN 1137:1994 Fruit and vegetable juices - Enzymatic determination of citric acid (citrate) - NADH spectrometric method
NF EN 1139:1994 Fruit and vegetable juices - Enzymatic determination of D-isocitric acid - NADPH spectrometric method
NF T75-451:1983 Essential oils. Oils of bergamot, lemon, bigarade and lime complete or reduced in bergaptene content. Dosage of bergaptene by liquid high pressure chromatography.
NF V76-126*NF EN 1137:1994 Fruit and vegetable juices. Enzymatic determination of citric acid (citrate) content. Nadh spectrometric method.
NF V76-128*NF EN 1139:1994 Fruit and vegetable juices. Enzymatic determination of D-isocitric acid content. Nadph spectrometric method.

SCC

DANSK DS/EN 1137:1994 Fruit and vegetable juices - Enzymatic determination of citric acid (citrate) content - NADH spectrometric method
NS-EN 1137:1994 Fruit and vegetable juices - Enzymatic determination of citric acid (citrate) content - NADH spectrometric method
DANSK DS/EN 1139:1994 Fruit and vegetable juices - Enzymatic determination of D-isocitric acid content - NADPH spectrometric method
NS-EN 1139:1994 Fruit and vegetable juices - Enzymatic determination of D-isocitric acid content - NADPH spectrometric method

British Standards Institution (BSI)

BS EN 1137:1995(2000) Method for Determination ofcitric acid (citrate) content of fruit and vegetable juices : NADH spectrometric method
BS EN 1137:1995 Method for determination of citric acid (citrate) content of fruit and vegetable juices: NADH spectrometric method
BS EN 1139:1995 Method for determination of D-isocitric acid content of fruit and vegetable juices - NADPH spectrometric method

German Institute for Standardization

DIN EN 1137:1994-12 Fruit and vegetable juices - Enzymatic determination of citric acid (citrate) content; NADH spectrometric method; German version EN 1137:1994
DIN EN 1139:1994-12 Fruit and vegetable juices - Enzymatic determination of D-isocitric acid content - NADPH spectrometric method; German version EN 1139:1994

European Committee for Standardization (CEN)

EN 1137:1994 Fruit and vegetable juices - Enzymatic determination of citric acid (citrate) content - NADH spectrometric method
EN 1139:1994 Fruit and vegetable juices - Enzymatic determination of D-isocitric acid content - NADPH spectrometric method

Indonesia Standards

SNI 06-6989.31-2005 Water and waste water - Part 31: Test methods of phosphate content by spectrophotometers with acid ascorbic

RU-GOST R

GOST R 53969-2010 Food salts of citric acid (citrates). Method for determination of moisture mass fraction
GOST ISO 7358-2015 Essential oils of bergamot, lemon, citron and lime, fully and partially reduced in bergapten. Determination of bergapten content by high-pressure liquid chromatography (HPLC)
GOST R 52391-2005 Wine production. Method for determination of citric acid mass concentration
GOST 32113-2013 Alcoholic products and raw materials for their production. Enzymatic method for determination of citric acid mass fraction

NL-NEN

NEN 6398-1992 Fruit lemonades - Determination of proline content - Spectrometric method
NEN 6399-1992 Fruit lemonades - Determination of potassium content - Flame photometric method
NEN 6581-1985 Rain water - UV-photometric determination of nitrate content
NEN 6395-1992 Fruit lemonades - Determination of total phosphorus content - Spectrometric method

PL-PKN

PN Z04200-02-1988 Air purity protection ests for oxalic acid etermination of oxalic acid by ltraviolet absorption spectrophotometry

Korean Agency for Technology and Standards (KATS)

KS H ISO 7358:2011 Oils of bergamot, lemon, citron and lime, fully or partially reduced in bergapten-Determination of bergapten content by high-pressure liquid chromatography (HPLC)
KS B 5570-2017 Performance test for UV/Vis spectrophotometer
KS H ISO 7358:2014 Oils of bergamot, lemon, citron and lime, fully or partially reduced in bergapten — Determination of bergapten content by highpressure liquid chromatography(HPLC)
KS B 5570-2022 Performance test for UV/Vis spectrophotometer

GSO

GSO ISO 3656:2015 Animal and vegetable fats and oils -- Determination of ultraviolet absorbance expressed as specific UV extinction
BH GSO ISO 3656:2016 Animal and vegetable fats and oils -- Determination of ultraviolet absorbance expressed as specific UV extinction

International Organization for Standardization (ISO)

ISO 7358:2002 Oils of bergamot, lemon, citron and lime, fully or partially reduced in bergapten - Determination of bergapten content by high-pressure liquid chromatography (HPLC)
ISO 7358:2021 Essential oils of bergamot, lemon, bitter orange and lime, fully or partially reduced in bergapten - Determination of bergapten content by high-performance liquid chromatography (HPLC)

BE-NBN

NBN EN 1137-1995 Fruit and vegetable juices - Enzymatic determination of citric acid (citrate) content - NADH spectrometric methodQ

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