Simple, specific analysis of organophosphorus and carbamate pesticides in sediments using column extraction and gas chromatography

Autor:	Andre A. Belisle, Douglas M. Swineford
Rok vydání:	1988
Předmět:	Chromatography Elution Chemistry Health Toxicology and Mutagenesis Phosphorus Extraction (chemistry) chemistry.chemical_element Chloride chemistry.chemical_compound Liquid–liquid extraction Sodium sulfate Anhydrous medicine Environmental Chemistry Gas chromatography medicine.drug
Zdroj:	Environmental Toxicology and Chemistry. 7:749-752
ISSN:	1552-8618 0730-7268
DOI:	10.1002/etc.5620070908
Popis:	A simple, specific procedure was developed for the analysis of organophosphorus and carbamate pesticides in sediment. The wet soil was mixed with anhydrous sodium sulfate to bind water and the residues were column extracted in acetonermethylene chloride (1:1, v/v). Coextracted water was removed by additional sodium sulfate packed below the sample mixture. The eluate was concentrated and analyzed directly by capillary gas chromatography using phosphorus and nitrogen specific detectors. Recoveries averaged 93% for sediments extracted shortly after spiking, but decreased significantly as the samples aged.
Databáze:	OpenAIRE
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