Gas chromatographic determination of alkali metal O,O-diethyl phosphorodithioate present in trace amounts

doi:10.1007/BF01197410

Journal ArticleDOI

Gas chromatographic determination of alkali metal O,O-diethyl phosphorodithioate present in trace amounts

Vlasta Drevenkar, +3 more

- 01 Sep 1979 -

Mikrochimica Acta

- Vol. 71, Iss: 5, pp 385-394

Chats0

TLDR

In this paper, a gas chromatographic determination of traces of alkali metal O,O-diethyl phosphorodithioates is described, where the salts were converted into a volatile derivative by alkylation with diazomethane.

Abstract:

A gas Chromatographic determination of traces of alkali metal O,O-diethyl phosphorodithioates is described. The salts were converted into a volatile derivative by alkylation with diazomethane. The product was identified by gas chromatography-mass spectrometry. With aqueous samples a linear relationship of peak height to amount of salt was obtained in the range 0.04–1 ng and for urine samples a calibration curve was constructed. The detection limit (signal to noise ratio 4/1) was 40 pg of salt. The procedure was successfully used for monitoring phosalone absorption by occupationally exposed persons.

Citations

PDF

Open Access

More filters

Journal ArticleDOI

Biological monitoring of pesticide exposure: a review of analytical methods.

C. Aprea, +4 more

- 05 Apr 2002 -

Journal of Chromatography B

TL;DR: A wide range of studies concerned with analytical methods for biological monitoring of exposure to pesticides is reviewed in this paper, where all phases of analytical procedures are assessed, including sampling and storage, sample preparation and analysis, and validation of methods.

...read moreread less

Journal ArticleDOI

Analytical method for the determination of urinary alkylphosphates in subjects occupationally exposed to organophosphorus pesticides and in the general population.

C. Aprea, +2 more

- 01 Nov 1996 -

Journal of Analytical Toxicology

TL;DR: The proposed method has a limit of detection of 2-3 micrograms/L and a mean recovery of the purification stage of 85.8-101.0% for all six compounds, making this method suitable also for determining the six metabolites in the general population.

...read moreread less

Journal ArticleDOI

The rate of urinary excretion of phosalone residues in occupationally exposed persons.

Vlasta Drevenkar, +4 more

- 01 Dec 1979 -

Science of The Total Environment

TL;DR: A systematic increase in the concentrations of pesticide residues in the morning urine should initiate more efficient and well-timed protection measures.

...read moreread less