Gas phase determination method of benzene series
Gas phase determination method of benzene series, Total:178 items.
The international standard classification for "Gas phase determination method of benzene series" includes: Water quality , Workplace atmospheres , Ambient atmospheres , Paints and varnishes , Aromatic hydrocarbons , Tobacco, tobacco products and related equipment , Water quality in general , Petroleum products in general , Animal feeding stuffs , Examination of water for chemical substances , Chemical analysis , Occupational safety. Industrial hygiene , Waxes, bituminous materials and other petroleum products , Footwear .
The Chinese standard classification for "Gas phase determination method of benzene series" includes: Analysis methods for toxic substances in water , Labor sanitation , Environmental sanitation , Analysis methods for toxic substances in atmosphere , Basic standard and general method for coating , Basic organic chemicals , General organic chemicals , Tobacco curing in general , Fuel oil , Analysis methods for industrial wastewater and pollutants , Petroleum products in general , Livestock and poultry feed and additive , Analysis methods for exhaust emission pollutants , Basic standards and general methods for water treatment agent , Culture, education and drawing instruments, notebooks and cards , Basic standards and general methods , Coating , Petroleum wax , Footgear .
中华人民共和国环境保护部
- GB 13194-1991 Water quality-Determination of nitrobenzene, mononitrotoluene(MNT),nitrochlorobenzene and oinitrotoluene(ONT)-Gas chromatography
- GB 11890-1989 Water quality - Determination of benzene and its analogies gas chromatographic method
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 17131-1997 Water quality--Determination of 1, 2-dichlorobenzene, 1, 4-dichlorobenzene, 1, 2, 4-trichlorobenzene--Gas chromatography
- GB/T 8381.8-2005 Determination of polychlorobiphenyls(PCBs) in feed - Gas chromatography
- GB/T 16045-1995 Workplace air--Determination of benzene--Thermal desorption gas chromatographic method
- GB/T 16051-1995 Workplace air--Determination of xylene--Thermal desorption gas chromatographic method
- GB/T 16050-1995 Workplace air--Determination of xylene--Solvent desorption gas chromatographic method
- GB/T 11937-1989 Standard methods for hygienic examination of benzenes in drinking water sources--Gas chromatography
- GB/T 32693-2016 Determination of the aniline compounds in gasoline一By gas chromatography-mass spectrometry
- GB/T 16049-1995 Workplace air--Determination of xylene--Direct injection gas chromatographic method
- GB/T 16046-1995 Workplace air--Determination of toluene--Direct injection gas chromatographic method
- GB/T 16048-1995 Workplace air--Determination of toluene--Thermal desorption gas chromatographic method
- GB/T 23990-2009 Determination of the contents of benzene toluene ethylbenzene and xylene in coatings by gas chromatography
- GB/T 8038-1987 Toluene of coal carbonization--Determination of hydrocarbon impurities-gas chromatographic method
- GB/T 14670-1993 Air quality-Determination of styrene-Gas chromatography
- GB/T 16052-1995 Workplace air―Determination of styrene―Direct injection gas chromatographic method
- GB/T 14677-1993 Air quality. Determination of toluene, dimethyl benzene and styrene. Gas chromatography
- GB/T 16053-1995 Workplace air--Determination of styrene--Solvent desorption gas chromatographic method
- GB/T 16113-1995 Workplace air--Determination of 2, 4, 6-trinitrotoluene--Gas chromatographic method
- GB/T 8038-2009 Toluene of coal carbonization—Determination of hydrocarbon impurities gas chromatographic method
- GB/T 17474-1998 Standard test method for benzene in hydrocarbon solvents by gas chromatography
- GB/T 17088-1997 Workplace air--Determination of N-methylaniline--Solvent desorption gas chromotrographic method
- GB/T 16112-1995 Workplace air--Determination of dinitrobenzene--Gas chromatographic method
- GB 11937-1989 standard methods for hygienic examination of benzenes in drinking water sources-Gas chromatography
- GB/T 16043-1995 Workplace air--Determination of benzene--Direct injection gas chromatographic method
- GB/T 12688.9-2011 Test method of styrene for industrial use—Part 9:Determination of trace benzene—Gas chromatographic method
- GB/T 11890-1989 Water quality--Determination of benzene and its analogies--Gas chromatographic method
- GB/T 16054-1995 Workplace air--Determination of styrene--Thermal desorption gas chromatographic method
- GB/T 16047-1995 Workplace air--Determination of toluene--Solvent desorption gas chromatographic method
- GB/T 16044-1995 Workplace air--Determination of benzene--Solvent desorption gas chromatographic method
- GB/T 11938-1989 standard methods for hygienic examination of chlorobenzenes in drinking water sources-Gas chromatography
- GB/T 21130-2007 Cigarettes—Determination of Benzo [α] pyrene in total particulate matter
Professional Standard - Environmental Protection
- HJ 738-2015 Ambient air - Determination of nitroaromatics -Gaschromatography
- HJ/T 39-1999 Stationary source emission -- Determination of chlorobenzenes -- Gas chromatography
- HJ 739-2015 Ambient air - Determination of nitroaromatics - Gaschromatography mass spectrometry
- HJ 583-2010 Ambient air—Determination of benzene and its analogies using sorbent adsorption thermal desorption and Gas Chromatography
- HJ 822-2017 Water quality - Determination of aniline compounds - Gas chromatography mass spectrometry
- HJ 975-2018 Solid waste - Determination of benzene and its analogies - Headspace-gas chromatography
- HJ 1261-2022 Stationary source emission―Determination of benzene and its analogies ―Bags sampling/Direct injection―gas chromatography
- HJ 716-2014 Water qualiy - Determination of nitroaromatics - Gas chromatography mass spactrometry
- HJ 743-2015 Soil and sediment―Determination of polychlorinated biphenyls(PCBs)―Gas chromatography mass spectrometry
- HJ 904-2017 Ambient air - Determination of polychlorinated biphenyl mixtures - Gas chromatography
- HJ 1067-2019 Water quality—Determination of benzene and its analogies —Headspace / gas chromatography
- HJ 890-2017 Soil and sediment - Determination of polychlorinated biphenyl mixtures - Gas chromatography
- HJ 891-2017 Solid waste - Determination of polychlorinated biphenyls - Gas chromatography mass spectrometry
- HJ 976-2018 Solid waste - Determination of benzene and its analogies - Headspace/gas chromatography-mass spectrometry
- HJ 648-2013 Water quality - Determination of nitroaromatics by gas chromatography
- HJ 922-2017 Soil and sediment - Determination of polychlorinated biphenyls - Gas chromatography
- HJ 952-2018 Soil and sediment - Determination of polybrominated diphenyl ethers - Gas chromatography mass spectrometry
- HJ 903-2017 Ambient air - Determination of polychlorinated biphenyls - Gas chromatography
- HJ/T 68-2001 Stationary source emission -- Determination of exhauster anilines -- Gas chromatography
- HJ/T 74-2001 Water quality - Determination of chlorobenzene- Gas chromatography
- HJ 1079-2019 Stationary source emission—Determination of chlorobenzenes —Gas chromatography
- HJ/T 66-2001 Stationary source emission -- Determination of chlorobenzenes -- Gas chromatography
- HJ 621-2011 Water quality –Determination of chlorobenzenes-gas chromatography
- HJ 584-2010 Ambient air—Determination of benzene and its analogies by activated charcoal adsorption carbon disulfide desorption and gas chromatography
- HJ 592-2010 Water quality - Determination of nitrobenzene-compounds by Gas chromatography
Guangdong Provincial Standard of the People's Republic of China
- DB44/T 1378-2014 Determination of Benzene Series in Altered Products by Gas Chromatography
- DB44/T 1709-2015 Gas Chromatography-Mass Spectrometry for the Determination of Benzene Series in Corrected Products
- DB44/T 1711-2015 Determination of Chlorobenzene Compounds in Aerosol by Gas Chromatography-Mass Spectrometry
国家市场监督管理总局、中国国家标准化管理委员会
- GB/T 12688.10-2020 Test method of styrene for industrial use—Part 10: Determination of oxygenates—Gas chromatography
- GB/T 39765-2021 Determination of benzene,methylbenzene,ethylbenzene,dimethybenzene in stationery—Gas chromatographic method
- GB/T 39298-2020 Reclaimed water quality—Determination of benzene homologues—Gas chromatography
Professional Standard - Urban Construction
- CJ 26.14-1991 Municipal sewage water quality inspection method standard benzene series (C6-C8) determination by gas chromatography
- CJ/T 64-1999 Municipal sewage.Determination of benzene series(C6-C8).Gas chromatographic method
Professional Standard - Hygiene
- WS/T 159-1999 Workplace air. Determination of trichloroaniline. Gas chromatographic method
- WS/T 134-1999 Workplace air —Determination of biphenye-phenyl ether —Solvent desorption gas chromatographic method
- WS/T 142-1999 Workplace air. Determination aniline. Solvent desorption gas chromatographic method
- WS/T 152-1999 Workplace air. Determination of toluene. Passive sampling gas chromatographic method
- WS/T 151-1999 Workplace air. Determination of benzene. Passive samping gas chromatographic method
- WS/T 49-1996 Urine—Determination of phenol—Gas chromatographic method-Ⅰ—Liquid crystal column
- WS/T 50-1996 Urine—Determination of phenol—Gas chromatographic method-Ⅱ—FFAP column
- WS/T 59-1996 Urine.Determination of 4-amino-2,6-dinitrotoluene.Gas chromatographic method
- WS/T 15-1996 Workplace air. Determination of benz (a)pyrene. High performance liquid chromatographic method
- WS/T 51-1996 Exhaled air.Determination of benzene.Gas chromatographic method
- WS/T 137-1999 Workplace air. Determination of chlorobenzene. Solvent desorption gas chromatographic method
Fujian Provincial Standard of the People's Republic of China
- DB35/T 1602-2016 Determination of Benzene Series in Seawater by Purge and Trap/Gas Chromatography
Liaoning Provincial Standard of the People's Republic of China
- DB21/T 2554-2016 Determination of Benzene Series in Marine Sediments by Headspace-Solid Phase Microextraction/Gas Chromatography-Mass Spectrometry
- DB21/T 2555-2016 Determination of BTEX in seawater by purge and trap gas chromatography-mass spectrometry
中华人民共和国国家卫生和计划生育委员会
- GB 11938-1989 Standard method for hygienic examination of chlorobenzene compounds in source water by gas chromatography
- GB 11737-1989 Standard method for hygienic inspection of benzene series in source water by gas chromatography
Professional Standard - Commodity Inspection
- SN/T 3918-2014 Determination of polychlorinated terphenyls in plastics and plastic products - Gas Chromatograph method
- SN/T 1545-2005 Method for the concurrent determination of benzene toluene xylene and diisocyanate in solvent coatings for import and export - Gas chromatography method
- SN/T 2463-2010 Method for the determination of polychlorinated biphenyls (PCBs) in textiles—GC method
Military Standard of the People's Republic of China-General Armament Department
- GJB 4520-2002 Determination of diphenylchloroarsine, diphenylcyanoarsine and their degradation products in water by gas chromatography
- GJB 533.28-1988 Detection methods for 45 components of submarine cabin air. Determination of benzene, toluene, ethylbenzene, xylene, and 1,2-dichloroethane content by gas chromatography.
- GJB 4521-2002 Determination of diphenylchloroarsine, diphenylcyanoarsine and their degradation products in soil by gas chromatography
- GJB 533.33-1991 Detection method of air components in submarine cabin. Determination of cumene, n-propylbenzene, tert-butylbenzene, n-butylbenzene, 1,3,5-trimethylbenzene (including other butylbenzene) and 1,2,4-trimethylbenzene in gas phase. chromatography
- GJB 533.33A-2021 Part 33 of the method for detecting air components in submarine cabins: Cumene, n-propylbenzene, tert-butylbenzene, n-butylbenzene, sec-butylbenzene, 1,3,5-trimethylbenzene (including other butylbenzene), 1,2, 4-Determination of trimethylbenzene content b
未注明发布机构
- ASTM RR-D02-1413 1997 D6160-Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
- ASTM RR-D02-1882 2017 D3606-Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
- ASTM RR-D16-1030 2003 D5060-Test Method for Determining Impurities in High-Purity Ethylbenzene by Gas Chromatography
- ASTM RR-D01-1122 2001 D6229-Test Method for Trace Benzene in Hydrocarbon Solvents by Capillary Gas Chromatography
- ASTM D3606-24 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
- ASTM RR-D02-1816 2015 D5769-Test Method for Determination of Benzene, Toluene, and Total Aromatics in Finished Gasolines by Gas Chromatography/Mass Spectrometry
- ASTM RR-D01-1038 1984 D4367-Test Method for Benzene in Hydrocarbon Solvents by Gas Chromatography
- ASTM RR-D02-2004 2020 ASTM D3606- Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
- ASTM RR-D02-1382 1996 D5769-Test Method for Determination of Benzene, Toluene, and Total Aromatics in Finished Gasolines by Gas Chromatography/Mass Spectrometry
- ASTM RR-D02-1738 2012 D7753-Test Method for Hydrocarbon Types and Benzene in Light Petroleum Distillates by Gas Chromatography
- ASTM RR-D16-1038 2009 D4735-Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
水利部
- SL/T 787-2019 Water quality- Determination of chlorobenzenes Solid phase extraction Gas chromatography mass spectronetry
Professional Standard - Energy
- NB/SH/T 6078-2023 Determination of Benzene and Naphthalene Hydrocarbons in Jet Fuel by Comprehensive Two-Dimensional Gas Chromatography
- NB/SH/T 0713-2023 Standard test method for determination of benzene and toluene in gasoline by gas chromatography
Hebei Provincial Standard of the People's Republic of China
- DB13/T 2190.3-2015 Determination of migration of benzene series in water environment simulants of plastic packaging materials by gas chromatography
- DB13/T 5254-2020 Determination of coal tar benzene, toluene, phenol, naphthalene, fluorene, phenanthrene, anthracene, pyrene by gas chromatography
Shandong Provincial Standard of the People's Republic of China
- DB37/T 2650-2015 Determination of Aniline Compounds in Motor Gasoline by Gas Chromatography
工业和信息化部
- YB/T 6051-2022 Coke oven gas--Determination of benzene content-Gas chromatography
Group Standards of the People's Republic of China
- T/GDFDTAEC 04-2022 Determination of Divinylbenzene residue in Plant extract Gas chromatography-Mass spectrometr
- T/CNTAC 68-2020 Textiles—Determination of benzotriazole compounds—Gas chromatography-mass spectrometry
Professional Standard - Water Conservancy
- SL/T 273.1-2001 Methods for the determination of organic chemicals in water - determination of trace nitrobenzenes by resin adsorption and gas chromatography
Sichuan Provincial Standard of the People's Republic of China
- DB51/T 2182-2016 Determination of Aniline Content in Motor Gasoline by Gas Chromatography
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 34270-2017 Determination of polychorinated biphenyls and hexachlorobenzene in feeds--Gas chromatography
National Health Commission of the People's Republic of China
- GBZ/T 311-2018 Determination of tolylenediamine in urine— Gas chromatography method
Professional Standard - Petrochemical Industry
- SH/T 0707-2001 Determination of benzene and toluene in petroleum waxes using headspace gas chromatography with flame ionization detection
- SH/T 1628.7-2023 Vinyl acetate for industrial use – Part 7:Determination of trace benzene series– Gas chromatography–mass spectrometry method
Professional Standard - Light Industry
- QB/T 4555-2013 Footwear - Chemical test method - Determination of acetophenone-GC/MS
Guangxi Provincial Standard of the People's Republic of China
- DB45/T 1244-2015 Determination of Aniline Compounds in Gasoline by Gas Chromatography-Mass Spectrometry
Taiwan Provincial Standard of the People's Republic of China
- CNS 15110-2007 Method of test for hydrocarbon types, oxygenated compounds and benzene in spark ignition engine fuels by multi-dimensional gas chromatography
Jiangsu Provincial Standard of the People's Republic of China
- DB32/T 2206-2012 Determination of polychlorinated biphenyls in soil by gas chromatography
Professional Standard - Chemical Industry
- HG/T 4674-2014 Test method of activity for nickel series gas phase benzene hydrogenation catalysts
Jilin Provincial Standard of the People's Republic of China
- DB22/T 3120-2020 Determination of Nitrobenzene Compounds in Water Quality by Needle Trap Microextraction Gas Chromatography
German Institute for Standardization
- DIN 51438:2005 Testing of benzene and benzene homologues - Determination of the thiophene content of benzene - Gas chromatography
- DIN 51438:2005-02 Testing of benzene and benzene homologues - Determination of the thiophene content of benzene - Gas chromatography
- DIN 51437:2004-07 Testing of benzene and benzene homologues - Determination of the non-aromatics, toluene and C<(Index)8>-aromatics content of benzene - Gas chromatography
- DIN 51437:2004 Testing of benzene and benzene homologues - Determination of the non-aromatics, toluene and C<(Index)8>-aromatics content of benzene - Gas chromatography
American Society for Testing and Materials (ASTM)
- ASTM D4534-99 Standard Test Method for Benzene Content of Cyclic Products by Gas Chromatography
- ASTM D2580-06(2012) Standard Test Method for Phenols in Water by Gas-Liquid Chromatography
- ASTM D4367-22 Standard Test Method for Benzene in Hydrocarbon Solvents by Gas Chromatography
- ASTM D4367-02 Standard Test Method for Benzene in Hydrocarbon Solvents by Gas Chromatography
- ASTM D3606-22 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
- ASTM D3606-20e1 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
- ASTM D6563-11 Standard Test Method for Benzene, Toluene, Xylene (BTX) Concentrates Analysis by Gas Chromatography
- ASTM D6563-05e1 Standard Test Method for Benzene, Toluene, Xylene (BTX) Concentrates Analysis by Gas Chromatography
- ASTM D2580-06 Standard Test Method for Phenols in Water by Gas-Liquid Chromatography
- ASTM D6563-12 Standard Test Method for Benzene, Toluene, Xylene (BTX) Concentrates Analysis by Gas Chromatography
- ASTM D4367-02(2012) Standard Test Method for Benzene in Hydrocarbon Solvents by Gas Chromatography
- ASTM D4367-99 Standard Test Method for Benzene in Hydrocarbon Solvents by Gas Chromatography
- ASTM D6563-05 Standard Test Method for Benzene, Toluene, Xylene (BTX) Concentrates Analysis by Gas Chromatography
- ASTM D3606-17 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
- ASTM D3606-20 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
- ASTM D3606-21 Standard Test Method for Determination of Benzene and Toluene in Spark Ignition Fuels by Gas Chromatography
- ASTM UOP913-92 Impurities in Styrene by Gas Chromatography
- ASTM D4367-02(2007) Standard Test Method for Benzene in Hydrocarbon Solvents by Gas Chromatography
- ASTM D2426-93(2004)e1 Standard Test Method for Butadiene Dimer and Styrene in Butadiene Concentrates by Gas Chromatography
- ASTM D5769-10 Standard Test Method for Determination of Benzene, Toluene, and Total Aromatics in Finished Gasolines by Gas Chromatography/Mass Spectrometry
- ASTM D6563-11a Standard Test Method for Benzene, Toluene, Xylene (BTX) Concentrates Analysis by Gas Chromatography
- ASTM D4735-09 Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
- ASTM D6160-98(2008) Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
- ASTM D2426-93(2009) Standard Test Method for Butadiene Dimer and Styrene in Butadiene Concentrates by Gas Chromatography
- ASTM D2426-23 Standard Test Method for Butadiene Dimer and Styrene in Butadiene Concentrates by Gas Chromatography
- ASTM D5769-20 Standard Test Method for Determination of Benzene, Toluene, and Total Aromatics in Finished Gasolines by Gas Chromatography/Mass Spectrometry
- ASTM D5769-98 Standard Test Method for Determination of Benzene, Toluene, and Total Aromatics in Finished Gasolines by Gas Chromatography/Mass Spectrometry
- ASTM D6563-00 Test Method for Benzene, Toluene, Xylene, (BTX) Concentrates Analysis by Capillary Column Gas Chromatography
- ASTM D6229-06(2010) Standard Test Method for Trace Benzene in Hydrocarbon Solvents by Capillary Gas Chromatography
- ASTM D5060-07 Standard Test Method for Determining Impurities in High-Purity Ethylbenzene by Gas Chromatography
- ASTM D3606-99 Standard Test Method for Determination of Benzene and Toluene in Finished Motor and Aviation Gasoline by Gas Chromatography
- ASTM D6160-98(2003)e1 Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
- ASTM D3606-04 Standard Test Method for Determination of Benzene and Toluene in Finished Motor and Aviation Gasoline by Gas Chromatography
- ASTM D6160-98 Standard Test Method for Determination of Polychlorinated Biphenyls (PCBs) in Waste Materials by Gas Chromatography
VN-TCVN
- TCVN 7874-2008 water.Determination of phenol and derivatives of phenol.Liquid-liquid extraction gas chromatographic method
SCC
- DIN 51437 E:2024 Draft Document - Testing of benzene and benzene homologues - Determination of the content of non-aromatics, toluene and C<(Index)8>-aromatics in benzene - Gas chromatography
Association Francaise de Normalisation
- NF ISO 22863-2:2020 Fireworks - Test methods for the determination of specific chemical substances - Part 2: hexachlorobenzene by gas chromatography
- NF EN 12766-1:2000 Petroleum products and used oils - Determination of PCBs and related products - Part 1: separation and determination of a selection of PCB congeners by gas chromatography (GC) with the use of a gas capture detector...
- NF ISO 11423-1:1997 Water quality - Determination of benzene and certain benzene derivatives - Part 1: headspace gas chromatography method
- NF T51-901:1981 Plastics. Determination of residual styrene monomer in polystyrene by gas chromatography.
International Organization for Standardization (ISO)
- ISO 22863-2:2020 Fireworks — Test methods for determination of specific chemical substances — Part 2: Hexachlorobenzene by gas chromatography
- ISO 5279:1980 Toluene; Determination of hydrocarbon impurities; Gas chromatographic method
RU-GOST R
- GOST R 52570-2006 Motor and aviation gasolines. Determination of benzene and toluene by method of gas chromatography
- GOST R 56348-2015 Refined benzene. Determination of trace thiophene by gas chromatography test method
- GOST 15820-1982 Polystyrole and copolymers of styrole. Gas chromatographic method for determination of resictual monomers and non-polymerizing impurities
Korean Agency for Technology and Standards (KATS)
- KS C IEC 61619-2006(2011) Contamination by polychlorinated biphenyls(PCBs)-Method of determination by capillary column gas chromatography
- KS C 2375-2006(2021) Analytical method of polychlorinated biphenyls(PCBs)by gas chromatography peak pattern comparison
- KS I ISO 11423-1-2008(2018) Water quality-Determination of benzene and some derivatives-Part 1:Head-space gas chromatographic method
VDI - Verein Deutscher Ingenieure
- VDI 2457 Blatt 5-1981 Gaseous emission measurement; gas chromatographic determination of benzene@ toluene and xylene
CZ-CSN
- CSN 66 2108-1983 Petroleum benzene. Determination of benzene content and its impurities by gas chromatography
Standard Association of Australia (SAA)
- AS/NZS 2341.8:2016 Methods of testing bitumen and related roadmaking products, Method 8: Determination of matter insoluble in toluene
PL-PKN
- PN Z04159-05-1993 Air purity protection. Tests for phenol content. Determination of phenol in ambient air (imission) by gas chromatography
HU-MSZT
- MSZ 21862/23-1983 Testing of gaseous air pollutants in the workplace, determination of benzene; toluene; ethylbenzene and xylene, using spectrometric methods
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