Determination of contamination levels for multiple endocrine disruptors in hair from a non-occupationally exposed population living in Liege (Belgium)

2021 ◽  
pp. 152734
Author(s):  
Julien Claessens ◽  
Catherine Pirard ◽  
Corinne Charlier
Keyword(s):  
Endocrine Disruptors ◽  
Exposed Population ◽  
Occupationally Exposed ◽  
Contamination Levels

Determination of Dimetridazole and Ipronidazole in Feeds at Cross-Contamination Levels

1988 ◽  
Vol 71 (3) ◽  
pp. 474-477 ◽  
Author(s):  
Duane D Hughes
Keyword(s):  
Thin Layer ◽  
Rapid Method ◽  
Aqueous Phase ◽  
Borate Buffer ◽  
Cross Contamination ◽  
Chromatographic System ◽  
Arsanilic Acid ◽  
Contamination Levels ◽  
Benzene Extract

Abstract A rapid method for the determination of dimetridazole and ipronidazole in feeds is described. The compounds are extracted from a borate buffer (pH 8.65) with benzene, partitioned into IN HC1, and then partitioned back into benzene from a basic aqueous phase. The benzene extract is concentrated and injected onto a nonpolar (Apiezon L) gas chromatographic column for determination by 63Ni electroncapture detection. Recoveries from feeds of various composition, spiked at 0.2 ppm with both dimetridazole and ipronidazole, ranged from 70 to 115%; for the same feeds spiked at 1 ppm or more, the recoveries were greater than 80%. Carbadox, furazolidone, levamisole, oxytetracycline, chlortetracycline, sulfamethazine, sulfaquinoxaline, arsanilic acid, piperazine, penicillin, and commonly added vitamins and minerals do not interfere. A 2-dimensional thin layer chromatographic system is presented as a means of additional identification.

scholarly journals LC-MS/MS determination of potential endocrine disruptors of cortico signalling in rivers and wastewaters

2014 ◽  
Vol 406 (29) ◽  
pp. 7653-7665 ◽  
Author(s):  
Adrian A. Ammann ◽  
Petra Macikova ◽  
Ksenia J. Groh ◽  
Kristin Schirmer ◽  
Marc J. F. Suter
Keyword(s):  
Endocrine Disruptors

Determination of formic acid in urine of workers occupationally exposed to formaldehyde

2010 ◽  
Vol 196 ◽  
pp. S74 ◽  
Author(s):  
C. Mautempo ◽  
M.D.L. Bastos ◽  
F. Carvalho ◽  
F. Remião ◽  
H. Carmo ◽  
...  
Keyword(s):  
Formic Acid ◽  
Occupationally Exposed
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