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HRGC-LRMS

TCDD has been detected (sub-ppt) in human feces using HRGC/LRMS (Wendling et al. 1990). [Pg.545]

In rodent metabolism studies both parent compound and metabolite were detected in feces and metabolites were detected in urine using GC/LRMS. HRGC/LRMS has also been used successfully in determination of CDDs in rat feces (Abraham et al. 1989a). Adequate comparisons of sensitivity, accuracy, and precision cannot be made because of the lack of these data for several methods and the differences in the media and analytes for the available data. [Pg.545]

Rat feces (CDDs) Grinding of sample with Na2S04 addition 13C12-labeled CDD/CDF mixture Soxhlet extraction with toluene volume reduction clean-up on alumina column, elution with hexane volume reduction clean-up on silica gel, elution with hexane volume reduction clean-up on alumina B Super , elution with hexane solvent evaporation redissolution in benzene HRGC/LRMS (EI/MIM) No data 75-95 (TCDD) >60 (CDD) Abraham et al. 1989a... [Pg.547]

Human feces (2,3,7,8-TCDD) Addition of [3H]2,3,7,8-TCDD to sample digestion with H2S04 extraction with hexane clean-up sequentially on silica gel, alumina, and Carbopack C/Celite addition of tribromobiphenyl HRGC/LRMS (EI/SIM) 0.08-0.1 ppt 59-82 Wendling et al. 1990... [Pg.547]

Human adipose tissue (CDDs) Addition of [37CI]2,3,7,8-TCDD to sample hydrolysis with KOH, ethanol, and heat extraction with petroleum ether washing of organic layer with water and H2S04 volume reduction clean-up on silica gel elution with hexane clean-up on alumina elution with CH2CI2 volume reduction redissolution in tridecane HRGC/LRMS (EI/SIM) 10 ppt No data Schecter et al. 1985b... [Pg.547]

Human lung, liver, kidney, and adipose tissue (CDDs) Homogenization of sample saponification with KOH/ethanol washing with H2S04 and water extraction with hexane/acetonitrile clean-up on alumina column, elution with hexane/CH2CI2 addition of [13C]1,2,3,4-TCDD HRGC/LRMS (SIM) 10 ppt 35-115 Takizawa and Muto 1987... [Pg.548]

Rat liver and adipose tissue rat fetuses (CDDs) Grinding of sample with Na2S04 addition of [13C]2,3,7,8-TCDD and OCDD Soxhlet extraction with toluene volume reduction addition of hexane clean-up with column chromatography HRGC/LRMS (SIM) No data No data Van den Berg etal. 1987b... [Pg.549]

Air (hazardous waste site) (2,3,7,8-TCDD) Collection of sample onto glass fiber filter/polyurethane foam cartridge add [37CI4]2,3,7,8-TCDD and [13C12]2,3,7,8-TCDD Soxhlet extraction with CH2CI2 clean-up with acid/base sequentially on silica gel, modified silica gel, alumina, and carbon HRGC/LRMS No data 0.02 pg/m3 91-112 74-112 Fairless et al. 1987 Harless et al. 1992... [Pg.550]

Air (CDDs) Collection of sample onto glass fiber filter/polyurethane foam cartridge addition of internal standard Soxhlet extraction with toluene volume reduction clean-up and fractionation on Florisil , elutiion with toluene/diethylether, evaporation and redissollution in cyclohexane clean-up on modified silica gel using HPLC and hexane/diethyl ether volume reduction HRGC/LRMS (EI/SIM) HRGC/LRMS (NCI/SIM) 0.1-1 pg/m3 0.2-3 pg/inj (0.01-0.1 pg/m3) 80-122 86-102 Oehme et al. 1986... [Pg.550]

Air (CDDs) Collection of sample onto glass fiber filter/XAD-2 cartridge with 13C12- labeled CDD mixture added Soxhlet extraction with toluene and tetradecane evaporation and HRGC/LRMS (El) 0.01-0.05 pg/m3 5 Rappe et al. 1988... [Pg.550]

Drinking water (CDDs) Addition of 13C-labeled CDD internal standards extraction with organic solvent volume reduction clean-up on multiple columns of silica gel/basic silica/acidic silica, AgN03-siiica/basic alumina, and HPLC HRGC/LRMS (SIM) HRGC/MS/MS (SIM) No data No data McCurvin et al. 1989... [Pg.551]

Groundwater, soil, sediment Extraction of soil and sediment samples with Na2S04/acetonitrile/CH2CI2 centrifugation removal of HRGC/LRMS (CI/SIM) No data No data Pereira et al. 1985... [Pg.552]

Soil (from hazardous waste site) (CDDs) Addition of [13C]-2,3,7,8TCDF and OCDD and [37CI]2,3,7,8-TCDD extraction and clean-up using column chromatography HRGC/LRMS (EI/SIM) No data No data Stalling et al. 1986... [Pg.553]

Fish, birds, seals (CDDs) No methods details extraction and clean-up on silica, modified silica, and alumina columns used internal standards added HRGC/LRMS (EI/SIM) HRGC/LRMS (NCI/SIM) 1-50 pg 0.01-0.1 pg No data Buser et al. 1985... [Pg.556]

Wipe and liquid samples from pyrolized transformer oil (CDDs) Extraction with organic solvent and washing of organic layer sequentially with base and acid separation on neutral silica gel clean-up and fractionation on carbon/silica column HRGC/LRMS No data 83-134 (wipe) 19-70 (liquid) Hardin et al. 1989... [Pg.556]

EPA Methode 8280 (USA) Bestimmung der PCDD/PCDF (C14-C18) mit HRGC/LRMS Multi-Matrix-Methode u.a. Wasser, Boden, Schlamme 2,3,7,8-Cl4DD 10 ng/kg (Trinkwasser) US EPA (1986)... [Pg.186]

U.S. Environmental Protection Agency (EPA) (1986), Method 8280 Tetra- through octa- chlorinated dioxins and furans by HRGC/LRMS", Washington, D.C. [Pg.193]

This method is designed for use only by analysts experienced with residue analysis and skilled in HRGC/LRMS. [Pg.439]

Freeze-drying Soxhlet (6h) toluene h2so4 1) Florisil 2) carbon (SK-4) HRGC-LRMS (El, SIM) [33,113, 114]... [Pg.180]

L-L 1) Florisil, 2) HPLC HRGC-ECD, HRGC-LRMS (El, Scan) [126]... [Pg.181]

See other pages where HRGC-LRMS is mentioned: [Pg.87]    [Pg.389]    [Pg.549]    [Pg.551]    [Pg.552]    [Pg.554]    [Pg.554]    [Pg.555]    [Pg.556]    [Pg.557]    [Pg.560]    [Pg.560]    [Pg.561]    [Pg.438]    [Pg.180]    [Pg.180]    [Pg.181]    [Pg.181]    [Pg.181]    [Pg.181]    [Pg.667]    [Pg.701]    [Pg.5050]    [Pg.553]   
See also in sourсe #XX -- [ Pg.553 ]



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