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HRGC-ECD

D. Hainzl, J. Burhenne and H. Pariar, HRGC-ECD and HRGC-NICI SIM quantification of toxaphene residues in selected marine organism by envir onmentally relevant chloroboT nanes as standard , Chemosphere 2S 237-243 (1994). [Pg.75]

Potable water and raw source water Sample acetylated in situ by addition of acetic anhydride, solvent extracted and concentrated alternatively, extracted acidic sample derivatized by pentafluorobenzyl bromide and cleaned up by column chromatography HRGC-ECD (for pentafluorobenzyl derivative) HRGC-MS (for acetyl derivative) <50 ng/L (pentafluorobenzyl) <50 ng/L (acetyl derivative) 10-64% (pentafluorobenzyl derivative) 70-132% (acetyl derivative) Sitholeetal. 1986... [Pg.191]

Whole blood Solvent extraction HRGC/ECD with HRGC/MS confirmation No data 99 at 50 pg/L Kroneld 1986... [Pg.225]

Water Addition of internal standard extraction HRGC/ECD No data No data Feltes et... [Pg.95]

Methods for Determining Biomarkers of Exposure and Effect. Very few methods were located that could be used to determine exposure to 1,3-DNB or 1,3,5-TNB in humans. A spectrophotometric method exists (Dangwal and Jethani 1980) but is selective for nitro and amino benzene-based compounds, not for 1,3-DNB and 1,3,5-TNB specifically. The best methods for determination of exposure to 1,3-DNB and 1,3,5-TNB are HRGC/ECD (Bailey et al. 1988) and GC/MS (McEuen and Miller 1991). To date, only HRGC/ECD has been used quantitatively, and only for detection of... [Pg.99]

J.D. Berset and R. Holzer, Determination of coplanar and ortho substituted PCBs in some sewage sludges of Switzerland using HRGC/ECD and HRCG/MSD, Chromosphere, 32 (1996) 2317-2333. [Pg.600]

Soil, sediment (CDDs) Mixing of Na2S04 and sample elution with acetone/ethyl acetate/CH2CI2 evaporation and redissolution in hexane HRGC/ECD No data 92-100 Jasinski 1989... [Pg.553]

Foods (CDDs) Homogenization of sample, addition of 1,3,7,8-TCDD, and digestion with KOH/ethanol solution extraction with HRGC/ECD No data 85-106 Jasinski 1989... [Pg.555]

Hand swabs Wipe hand with swab HRGC/ECD... [Pg.66]

GC/ECD has been used to analyze tetryl in sea water with sensitivity in the ppt range (Hoffsommer and Rosen 1972). Recovery of tetryl was adequate (70%) (Hoffsommer and Rosen 1972). The sensitivity of the HRGC/ECD method for analysis of tetryl in drinking water was in the low ppb range (Belkin et al. 1985). The sample preparation was simple and yielded recoveries of 100% (Belkin et al. 1985). Precision was very good, as shown by the relative standard deviation (RSD) range of 5.4-7.5% for tetryl (Belkin et al. 1985). [Pg.78]

Sediment Freeze-drying Ultrasonic hexiacet (1 1) L-L Florisil HRGC-ECD [115]... [Pg.180]

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

HRGC-ECD has been used in some studies for PCDE analysis [115,117,126, 129],but GC-MS has been the most often used method in analysis of PCDEs [33, 43, 57, 58, 113, 114, 116, 118-126, 128, 130-133, 139]. Analysis of PCDEs has mostly been performed in selected ion monitoring mode (SIM) [33,57,58,113, 114,119,120,122-125,130,132,139], but full scan mode has also been used in some studies [121,126,131]. MS instruments are usually operated in electron impact mode (El). El mass spectra of most PCDEs have an abundant molecular ion M + and one abundant fragmention (M +-2Cl). The fragmention (M +-70), which is the same as the molecular ion of PCDFs, is more abundant than the molecular ion, but the latter has mostly been used in SIM analyses of PCDEs. Table 8 presents masses of molecular ions of PCDEs. [Pg.188]

Walter B, Ballschmiter K (1991) Quantitation of camphechlor/toxaphene in cod-liver oil by integration of the HRGC/ECD-pattern. Fresenius J Anal Chem 340 246-249... [Pg.235]

Ambient air Trapping on adsorbent thermal desorption HRGC/ECD 0.006 gg/m3 100 Frank and... [Pg.171]

Serum Extraction with mixed solvents treatment with methanolic KOH extraction with hexane cleanup on silica gel column HRGC/ECD 1.0 ng/mL on 1 mL sample >80 at 25-400 ng/mL NIOSH 1984b (method 8004) ... [Pg.670]

Plasma Solvent extraction cleanup on alumina Dual column HRGC/ECD 0.01 ng/g >95 Koopman-Esseboom et al. 1994b ... [Pg.670]

Human milk Extraction with mixed solvents cleanup on Florisil-silicic acid column HRGC/ECD No data 94 at ng/mL Mesetal. 1984 Safe et al. 1985b... [Pg.671]

Human milk (congener Extraction with ethanol/hexane clean up on Florisil column HRGC/ECD 3pg/g 90-104 Hong et al. 1992a... [Pg.671]

See other pages where HRGC-ECD is mentioned: [Pg.237]    [Pg.1239]    [Pg.1253]    [Pg.1253]    [Pg.225]    [Pg.229]    [Pg.89]    [Pg.90]    [Pg.91]    [Pg.93]    [Pg.95]    [Pg.96]    [Pg.100]    [Pg.1239]    [Pg.1253]    [Pg.1253]    [Pg.392]    [Pg.554]    [Pg.557]    [Pg.560]    [Pg.561]    [Pg.69]    [Pg.72]    [Pg.76]    [Pg.189]    [Pg.138]    [Pg.139]    [Pg.180]    [Pg.667]    [Pg.670]   
See also in sourсe #XX -- [ Pg.553 ]



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