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A refined method for analysis of 4,4 '-dicofol and 4,4 '-dichlorobenzophenone
Stockholm University, Faculty of Science, Department of Environmental Science and Analytical Chemistry.
Stockholm University, Faculty of Science, Department of Environmental Science and Analytical Chemistry.
Stockholm University, Faculty of Science, Department of Environmental Science and Analytical Chemistry. Swedish Toxicology Sciences Research Center, Sweden; Tongji University, China.
Stockholm University, Faculty of Science, Department of Environmental Science and Analytical Chemistry. Tongji University, China.
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Number of Authors: 6
2017 (English)In: Environmental science and pollution research international, ISSN 0944-1344, E-ISSN 1614-7499, Vol. 24, no 15, 13307-13314 p.Article in journal (Refereed) Published
Abstract [en]

The acaricide, dicofol, is a well-known pesticide and partly a substitute for dichlorodiphenyltrichloroethane (DDT). Only few reports on environmental occurrence and concentrations have been reported calling for improvements. Hence, an analytical method was further developed for dicofol and dichlorobenzophenone (DCBP) to enable assessments of their environmental occurrence. Concentrated sulfuric acid was used to remove lipids and to separate dicofol from DCBP. On-column injection was used as an alternative to splitless injection to protect dicofol from thermal decomposition. By the method presented herein, it is possible to quantify dicofol and DCBP in the same samples. Arctic cod (Gadus morhua) were spiked at two dose levels and the recoveries were determined. The mean recovery for dicofol was 65% at the low dose (1 ng) and 77% at the high dose (10 ng). The mean recovery for DCBP was 99% at the low dose (9.2 ng) and 146% at the high dose (46 ng). The method may be further improved by use of another lipid removal method, e.g., gel permeation chromatography. The method implies a step forward in dicofol environmental assessments.

Place, publisher, year, edition, pages
2017. Vol. 24, no 15, 13307-13314 p.
Keyword [en]
Kelthane, On-column injection, alpha-Cl-DDT, Cod, Analysis
National Category
Earth and Related Environmental Sciences
Identifiers
URN: urn:nbn:se:su:diva-144651DOI: 10.1007/s11356-017-8956-yISI: 000401566600012PubMedID: 28386885OAI: oai:DiVA.org:su-144651DiVA: diva2:1115962
Available from: 2017-06-27 Created: 2017-06-27 Last updated: 2017-06-27Bibliographically approved

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Yin, GeAthanassiadis, IoannisBergman, ÅkeZhou, YihuiAsplund, Lillemor
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