Gas Chromatography Oxygen Peak
Gas Chromatography Oxygen Peak, Total:188 items.
The international standard classification for "Gas Chromatography Oxygen Peak" includes: Protection against crime , Other standards related to optics and optical measurements , Farming and forestry , Aliphatic hydrocarbons , Chemical analysis , Gases for industrial application , Chemical technology (Vocabularies) , Workplace atmospheres , Cadmium, cobalt and their alloys .
The Chinese standard classification for "Gas Chromatography Oxygen Peak" includes: Crime judging technology , chromatograph , Basic standards and general methods , Organic chemicals in general , Industrial gas and chemical gas , Basic standards and general methods , Labor sanitation , Rare metals and their alloys analysis method , Legal medical expert , Basic organic chemicals .
国家市场监督管理总局、中国国家标准化管理委员会
- GB/T 39874-2021 Examination methods for bromazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
- GB/T 39877-2021 Examination methods for diazepam in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
- GB/T 30431-2020 Gas chromatography for laboratory
- GB/T 39875-2021 Examination methods for chlordiazepoxide in suspected drugs—Gas chromatography and gas chromatography-mass spectrometry
- GB/T 30430-2019 Standard column used for evaluating gas chromatographs
- GB/T 39884-2021 Examination methods for three components in cannabis in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
- GB/T 40496-2021 Determination of antioxidant content in jet fuel—High performance liquid chromatography
- GB/T 39883-2021 Examination methods for morphine 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 39885-2021 Examination methods for triazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
- GB/T 39881-2021 Examination methods for methaqualone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
- GB/T 39880-2021 Examination methods for methadone in suspected drugs -- Gas chromatography and gas chromatography-mass spectrometry
- GB/T 39878-2021 Examination methods for estazolam in suspected drugs - Gas chromatography and gas chromatography-mass spectrometry
- GB/T 39882-2021 Examination methods for methylene dioxymetham phetamine 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
Professional Standard - Agriculture
- 792兽药典 一部-2015 Appendix Contents 0500 Chromatography 0521 Gas Chromatography
- 66药典 四部-2020 0521 Gas chromatography
- 186药典 三部-2015 Chromatography 0521 General Principles of Gas Chromatography 27
- 1767药典 一部-2010 Appendix VI E Gas Chromatography
- SN/T 5578-2023 Determination of methylcyclosiloxane in leather - Headspace gas chromatography-mass spectrometry
- 2307药典 二部-2010 Appendix V E Gas Chromatography
- 784兽药典 二部-2015 Appendix Contents 0500 Chromatography 0521 Gas Chromatography
- NY/T 1700-2009 Determination of methane and carbon dioxide in biogas——Gas chromatography
- 205药典 三部-2020 Chromatography 0521 Gas Chromatography
- 85药典 四部-2015 0521 Gas chromatography
- 159药典 三部-2010 Appendix III Chromatography IIIC Gas Chromatography
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
- GB/T 29635-2013 GC and GC-MS examination methods for heroin in suspected drug
- GB/T 17084-1997 Workplace air--Determination of 2-methoxyethanol--Solvent desorption gas chromatographic method
- GB/T 4946-1985 Terms of gas chromatography
- GB/T 29637-2013 GC and GC-MS examination methods for ketamine in suspected drug
- GB/T 17086-1997 Workplace air--Determination of 2-butoxyethanol--Solvent desorption gas chromatographic method
- GB/T 8984-2008 Determination of carbon monoxide carbon dioxide and hydrocarbon in gases - Gas chromatographic method
- GB/T 16074-1995 Workplace air--Determination of ethylene oxide--Direct injection gas chromatographic method
- GB/T 43241-2023 Forensic sciences—Examination methods for nitrous oxide—Gas chromatography-mass spectrometry
- GB/T 4946-2008 Terms of gas chromatography
- GB/T 6022-1999 Butadiene for industrial use-Determination of oxygen in the gaseous phase above liquid butadiene -Gas chromatographic method
- GB/T 29636-2013 GC ,HPLC and GC-MS examination methods for methylamphetamine in suspected drug
- GB/T 16075-1995 Workplace air--Determination of ethylene oxide--Thermal desorption gas chromatographic method
- GB/T 16076-1995 Workplace air--Determination of epichlorohydrin--Direct injection gas chromatographic method
- GB/T 30431-2013 Gas Chromatograph for Laboratory
- GB/T 28124-2011 Determination of trace hydrogen,oxygen,methane and carbon monoxide in the inert gases—Gas chromatographic method
- GB/T 30430-2013 Standard Column Used for Evaluating Gas Chromatography
- GB/T 17085-1997 Workplace air--Determination of 2-ethoxyethanol--Solvent desorption gas chromatographic method
- GB/T 6021-1999 Butadiene for indusdrial use-Determination of oxygen and argon in the gaseous phase above liquid butadiene-Gas chromatographic method
- GB/T 14605-1993 Determination of trace argon, nitrogen and krypton in oxygen-Gas chromatographic method
- GB/T 8639.7-1988 Vanadium--Determination of oxygen content--Impulse fusion-gas chromatographic method
Professional Standard - Public Safety Standards
- GA/T 2043-2023 Forensic sciences-Examination methods for codeine in suspected cough syrup-GC and CC-MS
- GA/T 1614-2019 Forensic sciences—Examination methods for ketamine in biological samples—GC and GC-MS
- GA/T 2032-2023 Forensic sciences-Fxamination methods for dihydroetorphine in suspected drugs-GC and GC-MS
- 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 1989-2022 Forensic sciences—Examination methods for promethazine in suspected drugs一GC and GC-MS
- GA/T 1627-2019 Forensic sciences—Examination methods for four phenoxyacid herbicides including 2,4-D in biological samples—GC and GC-MS
- GA/T 1008.10-2013 GC and GC-MS examination methods for drugs—Part 10:Diazepam
- GA/T 1008.11-2013 GC and GC-MS examination methods for drugs—Part 11:Bromazepam
- GA/T 2036-2023 Forensic sciences-Examination methods for nimetazepam in suspected drugs-GC and GC-MS
- GA/T 1008.4-2013 GC and GC-MS examination methods for drugs—Part 4:Cocaine
- GA/T 1008.7-2013 GC and GC-MS examination methods for drugs—Part 7:Methaqualone
- GA/T 1327-2016 GC, GC-MS and LC-MS/MS examination methods for zolpidem in biological samples in forensic science
- GA/T 2026-2023 Forensic sciences-Examination methods for phencyclidine in suspected drugs-GC and GC-MS
- GA/T 2051-2023 Forensic sciences-Examination method for bromine in suspected precursor chemicals-GC and GC-MS
- GA/T 1008.9-2013 GC and GC-MS examination methods for drugs—Part 9:Estazolam
- GA/T 1316-2016 GC and GC-MS examination methods for ketamine in hair and blood samples of forensic science
- GA/T 1008.8-2013 GC and GC-MS examination methods for drugs—Part 8:Triazolam
- GA/T 1789-2021 Forensic sciences-Examination methods for hydroxylimine in suspected precursors-LC-MS,GC-MS and HPLC
- GA/T 1008.5-2013 GC and GC-MS examination methods for drugs—Part 5:MDMA
- GA/T 1615-2019 Forensic sciences—Examination methods for clozapine in biological samples—GC and GC-MS
- GA/T 2047-2023 Forensic sciences-Examination methods for benzyl cyanide, 3-oxo-2-phenylbutanamide,3-oxo-2-phenylbutyrate in suspected precursor chemicals-GC and GC-MS
- GA/T 2034-2023 Forensic sciences-Examination methods for caffeine in suspected drugs-GC and GC-MS
- GA/T 1328-2016 GC and GC-MS examination methods for carbamazepine in biological samples in forensic science
- GA/T 1622-2019 Forensic sciences—Examination methods for nereistoxin,bisultap,thiocyclam and cartap in biological samples—GC,GC-MS and LC-MS
- GA/T 2038-2023 Forensic sciences-Examination methods for tramadol in suspecteddrugs-GC and CC-MS
- GA/T 2028-2023 Forensic sciences-Examination methods for buprenorphine 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 1603-2019 Forensic sciences—Examination methods for diphenidol in biological samples-GC and GC-MS
- GA/T 1008.12-2013 GC and GC-MS examination methods for drugs—Part 12:Chlordiazepoxide
- GA/T 1627-2010 Gas chromatography and gas chromatography-mass spectrometry for the detection of four phenoxycarboxylic acid herbicides including 2,4-D in forensic science biological samples
- GA/T 1008.2-2013 GC and GC-MS examination methods for drugs—Part 2:Morphine
- GA/T 1008.6-2013 GC and GC-MS examination methods for drugs—Part 6:Methadone
- GA/T 1620-2019 Forensic sciences—Examination methods for chlorpheniramine in biological samples—GC and GC-MS
- GA/T 2030-2023 Forensic sciences-Examination methods for dolantin in suspected drugs-GC and GC-MS
- GA/T 2022-2023 Forensic sciences-Examination methods for 5F-AMB and5F-APINACA in suspected drugs-GC and GC-MS
- GA/T 1629-2019 Paraquat detection in blood and urine for forensic science by gas chromatography and gas chromatography-mass spectrometry
- GA/T 1791-2021 Forensic sciences-Examination methods for 7 phenylethylamines including 4-ethyl-2,5-dimethoxyphenethylamine in suspected drugs-GC and GC-MS
National Metrological Verification Regulations of the People's Republic of China
- JJG(化工) 201-1991 Gas Chromatograph Verification Regulations
- JJG 700-2016 Verification Regulation of Gas Chromatograph
司法部
- SF/T 0113-2021 Determination of cyanide in blood by gas chromatography-mass spectrometry and gas chromatography
Group Standards of the People's Republic of China
- T/CNTAC 152-2023 Textiles—Screening method of methylsiloxanes—Pyrolysis-gas chromatography-mass spectrometry method
- T/SSAE 45-2023 Determination of siloxane compounds and other SVHC compounds- gas chromatography mass spectrometry method
- T/FSI 139-2024 Determination of silicon hydrogen in siloxane oligomers—reactive gas chromatography
- T/LNUWA 010-2023 Water quality-Determination of epichlorohydrin Purge– and trap/gas chromatography-mass spectrometer
- T/LCAA 005-2021 Determination of methane, nitrous oxide and carbon dioxide concentrations in gases——gas chromatography method
Anhui Provincial Standard of the People's Republic of China
- DB34/T 1533-2011 Determination of phenylenediamines in oxidation hair dyes Gas Chromatography-Mass Spectrometry method
- DB34/T 3242-2018 Determination of Dimethoxymethane Content in Gasoline by Gas Chromatography
Professional Standard - Tobacco
- YC/T 540-2016 Cigarettes. Determination of ethylene oxide and propylene oxide in mainstream cigarette smoke. Gas chromatography-mass spectrometry method
National Health Commission of the People's Republic of China
- GB 23200.84-2016 National food safety standard―Determination of methoxychlor residue in meat Gas chromatography-mass spectrometry
Sichuan Provincial Standard of the People's Republic of China
- DB51/T 2005-2015 Determination of Propylene Oxide in Cleansing Cosmetics by Gas Chromatography-Mass Spectrometry
Fujian Provincial Standard of the People's Republic of China
- DB35/T 1625-2016 Determination of impurity content in carbon monoxide by gas chromatography
Professional Standard - Hygiene
- WS/T 173-1999 Workplace air. Determination of carbon monoxide. Gas chromatographic method
- WS/T 173-99 Gas chromatography method for determination of carbon monoxide in workplace air
Inner Mongolia Provincial Standard of the People's Republic of China
- DB15/T 1242-2017 Determination of hexachlorosiloxane content in chlorosilane gas chromatography-mass spectrometry
机械电子工业部
- JB 5225-1991 Standard chromatographic column for gas chromatograph testing
Professional Standard - Petroleum
- SY 5191-2011 Gas Chromatography Mud Logging Instrument
- SY/T 5191-2011 Gas Chromatograph Mud Logging Unit
Professional Standard - Machinery
- JB/T 6244-1992 Laboratory gas chromatograph
- JB/T 5225-1991 Standard Chromatographic Column for Testing of Gas Chromatograph
Hunan Provincial Standard of the People's Republic of China
- DB43/T 2940-2024 Determination of sulfur dioxide in pickled vegetable embryos by gas chromatography
Professional Standard - Chemical Industry
- HG/T 2686-1995 Determination of Trace Hydrogen, Oxygen, Methane and Carbon Monoxide In Inert Gas - Gas Chromatographic Method with Zirconia Detector
机械工业部
- JB 6244-1992 Laboratory gas chromatograph
海关总署
- SN/T 5112-2019 Determination of propylene glycol in edibe animals and feeds for import and export - GC Method and GC-MS method
- SN/T 0654-2019 Determination of captan residues in fruits for Export GC and GC-MS/MS method
- SN/T 5349-2021 Determination of siloxane compounds in silica gel heat-resisting material - GC-MS/MS method
Professional Standard - Commodity Inspection
- SN/T 3602-2013 Determination of organic oxygenate compounds in naphtha―Gas chromatography
- SN/T 0529-2013 Determination of methoxychlor residues in meat for export. GC/MS method
国家能源局
- NB/SH/T 0994-2019 Standard test method for separation and determination of oxygenates and nitrogenous compounds in gasoline by solid-phase extraction and gas chromatography-mass spectrometry
工业和信息化部
- YS/T 1301-2019 Determination of phosphorus oxychloride,phosphorus trichloride in chlorosilanes - Gas chromatography-mass spectrometry method
Hebei Provincial Standard of the People's Republic of China
- DB13/T 5097-2019 Gas Chromatography and Gas Chromatography-Mass Spectrometry Examination Method for 3-Fluoro-4-cyanophenol Ester Liquid Crystal Monomers
Professional Standard - Petrochemical Industry
- SH/T 1483-2004 Isobutene for industrial use -- Determination of oxy-compounds -- Gas chromatographic method
- SH/T 1787-2015 Isoamylene for industrial use. Determination of oxy-compounds. Gas chromatographic method
Professional Standard - Non-ferrous Metal
- YS/T 540.7-2006 Vanadium -- Determination of oxygen content -- Impulse fusion-gas chromatographic method
Professional Standard - Geology
- DZ 51-1987 Gas Chromatography Analysis of Saturated Hydrocarbons
Korean Agency for Technology and Standards (KATS)
- KS C 2375-2006(2021) Analytical method of polychlorinated biphenyls(PCBs)by gas chromatography peak pattern comparison
- KS C 2375-2006(2016) Analytical method of polychlorinated biphenyls(PCBs)by gas chromatography peak pattern comparison
- KS C 2375-2021 Analytical method of polychlorinated biphenyls(PCBs)by gas chromatography peak pattern comparison
- KS M ISO 10638:2012 Rubber-Identification of antidegradants by gas chromatography/mass spectrometry
- KS C 2375-2006 Analytical method of polychlorinated biphenyls(PCBs)by gas chromatography peak pattern comparison
- KS M 1987-2002(2007) Butadiene for industrial use-Determination of oxygen and argon in the gaseous phase above liquid butadiene-Gas chromatographic method
- KS I ISO 8186:2006 Ambient air-Determination of the mass concentration of carbon monoxide(Gas chromatographic method)
- KS I ISO 8186-2006(2016) Ambient air-Determination of the mass concentration of carbon monoxide(Gas chromatographic method)
- KS I ISO 8186:2021 Ambient air — Determination of the mass concentration of carbon monoxide — Gas chromatographic method
- KS M 0031-1999 General rules for gas chromatographic analysis
- KS M 0031-2017(2022) General rules for gas chromatographic analysis
- KS M 2408-2003 Test method for determination of oxygenates in gasoline by gas chromatography
- KS M 0027-1993 General Rules for Analytical Methods in Gas Chromatography Mass Spectrometry
- KS M 0027-2023 General rules for analytical methods in gas chromatography mass spectrometry
- KS M 2408-2023 Test method for determination of oxygenates in gasoline by gas chromatography
YU-JUS
- JUS H.F8.122-1986 Gases. Determination of oxygen content. Gas chromatographic method
- JUS H.F8.152-1986 Gases. Determination ofcarbon dioxid content. Gas chromatographic methctC/
American Society for Testing and Materials (ASTM)
- ASTM UOP759-76 Trace Oxygen in Gases by Gas Chromatography
- ASTM D5599-00(2005) Standard Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection
- ASTM D5599-00 Standard Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection
- ASTM D5599-00(2010) Standard Test Method for Determination of Oxygenates in Gasoline by Gas Chromatography and Oxygen Selective Flame Ionization Detection
- ASTM E475-00 Standard Test Method for Assay of Di- tert -Butyl Peroxide Using Gas Chromatography
- ASTM E475-00(2005) Standard Test Method for Assay of Di- tert -Butyl Peroxide Using Gas Chromatography
- ASTM UOP733-10 Residual Triglycerides in Deoxygenated Feedstocks by GC
- ASTM UOP649-74 Total Oxygen in Organic Materials by Pyrolysis-Gas Chromatographic Technique
- ASTM E1510-95(2021) Standard Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
- ASTM E1510-95(2000) Standard Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
- ASTM E1510-95 Standard Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
BE-NBN
- NBN T 52-020-1990 Analyse van vloeibare aardoliekoolwaterstoffen - Gaschromatografische analyse - Bepaling van deorganische zuurstofverbindingen en van de organisch gebonden zuurstof met behulp van een zuurstof-specifieke detector (O-FID)
RU-GOST R
- GOST R 54282-2010 Gasoline. Determination of oxigenates by method of gas chromatography and oxygen selective flame ionization detection
- GOST R 54282-2010(2019) Gasoline. Determination of oxigenates by method of gas chromatography and oxygen selective flame ionization detection
GSO
- GSO 2193:2011 Determination of Antioxidant in Turbine Oils By Gas Chromatograph
- BH GSO 2193:2012 Determination of Antioxidant in Turbine Oils By Gas Chromatograph
- OS GSO 2193:2011 Determination of Antioxidant in Turbine Oils By Gas Chromatograph
- GSO ISO 8186:2014 Ambient air -- Determination of the mass concentration of carbon monoxide -- Gas chromatographic method
- OS GSO ISO 8186:2014 Ambient air -- Determination of the mass concentration of carbon monoxide -- Gas chromatographic method
- BH GSO ISO 8186:2015 Ambient air -- Determination of the mass concentration of carbon monoxide -- Gas chromatographic method
- GSO ISO 12078:2014 Anhydrous milk fat -- Determination of sterol composition by gas liquid chromatography (Reference method)
VN-TCVN
- TCVN 3895-1984 Natural gases.Gas chromatography method for the determination of carbon dioxided and hydrogen contents
- TCVN 3756-1983 Natural gas.Method for the determination of oxygen, nitrogen and methane by gas chromatography
- TCVN 5972-1995 Ambient air.Determination of the mass concentration of carbon monoxide.Gas chromatographic method
Japanese Industrial Standards Committee (JISC)
- JIS K 0123:2006 General rules for gas chromatography/mass spectrometry
SCC
- DANSK DS/ISO 23157:2022 Determination of the silanol group content on the surface of fumed silica – Reaction gas chromatographic method
- BS 3282:1963 Glossary of terms relating to gas chromatography
- VDI 2469 BLATT 1-2005 Measuring gaseous emissions — Measuring nitrous oxide — Manual gas chromatographic method
- VDI 2468 BLATT 7-2006 Measuring gaseous emissions — Measuring peroxyacetyl nitrate (PAN) — Gas chromatographic method
- NS-EN ISO 23157:2022 Determination of the silanol group content on the surface of fumed silica - Reaction gas chromatographic method (ISO 23157:2021)
- VDI 2469 BLATT 1-2005 Measuring gaseous emissions — Measuring nitrous oxide — Manual gas chromatographic method
- VDI 2468 BLATT 7-2006 Measuring gaseous emissions — Measuring peroxyacetyl nitrate (PAN) — Gas chromatographic method
- BS PD ISO/TS 19046-1:2017 Cheese. Determination of propionic acid level by chromatography-Method by gas chromatography
German Institute for Standardization
- DIN EN ISO 23157:2022-12 Determination of the silanol group content on the surface of fumed silica - Reaction gas chromatographic method (ISO 23157:2021); German version EN ISO 23157:2022
- DIN EN ISO 23157:2022 Determination of the silanol group content on the surface of fumed silica - Reaction gas chromatographic method (ISO 23157:2021)
Spanish Association for Standardization (UNE)
- UNE-EN ISO 23157:2023 Determination of the silanol group content on the surface of fumed silica - Reaction gas chromatographic method (ISO 23157:2021)
KR-KS
- KS I ISO 8186-2021 Ambient air — Determination of the mass concentration of carbon monoxide — Gas chromatographic method
- KS M 0027-2008(2023) General rules for analytical methods in gas chromatography mass spectrometry
British Standards Institution (BSI)
- BS EN ISO 23157:2022 Determination of the silanol group content on the surface of fumed silica. Reaction gas chromatographic method
- BS EN ISO 23157:2022(2023) Determination of the silanol group content on the surface of fumed silica — Reaction gas chromatographic method
- BS ISO 23157:2021 Determination of the silanol group content on the surface of fumed silica. Reaction gas chromatographic method
- 21/30429402 DC BS ISO 23157. Determination of the silanol group content on the surface of fumed silica. Reaction gas chromatographic method
- BS 3282:1969 Glossary of terms relating to gas chromatography
International Organization for Standardization (ISO)
- ISO 8186:1989 Ambient air; determination of the mass concentration of carbon monoxide; gas chromatographic method
- ISO 23157:2021 Determination of the silanol group content on the surface of fumed silica - Reaction gas chromatographic method
VDI - Verein Deutscher Ingenieure
- VDI 2469 Blatt 1-2002 Messen gasfoermiger Emissionen - Messen von Distickstoffmonoxid - Manuelles gaschromatographisches Verfahren
- VDI 2468 Blatt 7-2003 Messen gasfoermiger Immissionen - Messen von Peroxiacetylnitrat (PAN) - Gaschromatographisches Verfahren
PL-PKN
- PN C89085-18-1987 Epoxy resins Methods of testing Determination of residual epichlorohydrine by gas chromatography
European Committee for Standardization (CEN)
- EN ISO 23157:2022 Determination of the silanol group content on the surface of fumed silica - Reaction gas chromatographic method (ISO 23157:2021)
Association Francaise de Normalisation
- NF EN ISO 23157:2022 Determination of the content of silanol groups on the surface of fumed silica - Method by gas chromatographic analysis of reaction gases
Natural Gas Processor's Association (NGPA)
- GPA STD 2177-2013 Analysis of Natural Gas Liquid Mixtures Containing Nitrogen and Carbon Dioxide by Gas Chromatography
GC solvent peak,Gas Chromatography + Solvent Peak,Gas Chromatography Boiling Point Peak,Gas Chromatography Miscellaneous Peaks,gas chromatography peak english,Gas Chromatography Peak Separation,Gas Chromatography Oxygen Peak,GC carrier gas peak,Gas Chromatography Oxygen Content,No oxygen peak in gas chromatography,Gas chromatography + carrier gas peak,Gas Chromatography Oxygen Peak Height,Gas Chromatography Peak Miscellaneous Peak,GC peak width,GC peak out,Gas chromatography peak gas,Gas Chromatography Oxygen Peak,Oil Gas Chromatography Peak,Gas Chromatography Oxygen Peak,Gas Chromatography + Oxygen Peak