Automated cleanup of herbicides by adsorption chromatography for the determination of 2,3,7,8-tetrachlorodibenzo-p-dioxin

1977 ◽  
Vol 49 (3) ◽  
pp. 386-390 ◽  
Author(s):  
Tore. Ramstad ◽  
N. H. Mahle ◽  
R. Matalon
Keyword(s):  
Adsorption Chromatography ◽  
Tetrachlorodibenzo P Dioxin

scholarly journals A methodology for and the determination of TCDD in Herbicides

1983 ◽  
Vol 2 (3) ◽  
pp. 146-150
Author(s):  
J. E. Oliver ◽  
A. J. Reinecke ◽  
J. M. Venter
Keyword(s):  
Senior Author ◽  
Tetrachlorodibenzo P Dioxin

An appropriate methodology was developed under the direction of the senior author which allowed us to analyze various 2,4,5-T herbicides for the toxic contaminant 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD). The contaminant was detected at levels of three to fifty-six nanograms per gram (ng g-1), i.e. 3-56 ppb (parts per billion).

Isomer-specific determination of 2,3,7,8-tetrachlorodibenzo-p-dioxin and related compounds in human fat and food

1988 ◽  
Vol 16 (1-12) ◽  
pp. 161-165 ◽  
Author(s):  
H. Beck ◽  
K. Eckart ◽  
W. Mathar ◽  
Ch.-S. Rühl ◽  
R. Wittkowski
Keyword(s):  
Specific Determination ◽  
Tetrachlorodibenzo P Dioxin ◽  
Related Compounds

Clean-up procedure for the extraction of soil samples in the determination of 2,3,7,8-tetrachlorodibenzo-p-dioxin

1978 ◽  
Vol 153 (1) ◽  
pp. 233-238 ◽  
Author(s):  
Ivano Camoni ◽  
Alfonso Di Muccio ◽  
Damiano Pontecorvo ◽  
Luciano Vergori
Keyword(s):  
Soil Samples ◽  
Tetrachlorodibenzo P Dioxin

Surrogate-Assisted Determination of 2,3,7,8-Tetrachlorodibenzo-p-Dioxin in Fish by Electron Capture Capillary Gas Chromatography

1986 ◽  
Vol 69 (6) ◽  
pp. 976-980
Author(s):  
Richard A Niemann
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Capillary Gas Chromatography ◽  
Capillary Column ◽  
Electron Capture Detection ◽  
Matrix Interference ◽  
Relative Standard ◽  
Tetrachlorodibenzo P Dioxin ◽  
Liquid Chromatographic

Abstract Surrogate spiking the sample with 1000 parts per trillion (pptr) 1,3,7,8-tetrachlorodibenzo-p-dioxin (1378-TCDD) has doubled analytical throughput in determining toxic 2378-TCDD (analyte) at the low partper- trillion level in fish, using multicolumn high resolution liquid chromatographic cleanup before quantitation by capillary gas chromatography with electron capture detection. The 1378- and 2378-TCDD were recovered equally and were well separated by the capillary column so that the earlier-eluting surrogate did not interfere with the quantitation of levels of analyte many-fold lower. Matrix interference contributed <1 % bias in surrogate quantitation. Using surrogate recovery to correct for analyte losses during analysis, accuracy averaged (n = 7) 105% in determining 18 or 45 pptr 2378-TCDD added to fish without detectable bioincurred analyte. Analyses of selected fish with bioincurred 2378-TCDD gave results comparable to earlier work where recovery correction required a second analysis of sample fortified with analyte. With surrogate fortification, repeatability of determination (n = 3 or 4) improved markedly to <5% relative standard deviation at 37-46 pptr.

Determination of [3H]-2,3,7,8-tetrachlorodibenzo-p-dioxin in human feces to ascertain its relative metabolism in man

1990 ◽  
Vol 62 (8) ◽  
pp. 796-800 ◽  
Author(s):  
Jay M. Wendling ◽  
Robert G. Orth ◽  
Hermann. Poiger
Keyword(s):  
Human Feces ◽  
Tetrachlorodibenzo P Dioxin
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