A refined method for analysis of 4,4'-dicofol and 4,4'-dichlorobenzophenone
| Autor: | Lillemor Asplund, Åke Bergman, Ge Yin, Yanling Qiu, Yihui Zhou, Ioannis Athanassiadis |
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| Rok vydání: | 2016 |
| Předmět: |
Insecticides
Health Toxicology and Mutagenesis α-Cl-DDT 010501 environmental sciences Cod On-column injection 01 natural sciences Aquatic organisms DDT Gel permeation chromatography chemistry.chemical_compound Benzophenones Environmental Chemistry Ecotoxicology Animals Dicofol 0105 earth and related environmental sciences Chromatography Pesticide residue 010401 analytical chemistry Low dose Kelthane General Medicine Pesticide Pollution 0104 chemical sciences chemistry Environmental chemistry Analysis Research Article |
| Zdroj: | Environmental Science and Pollution Research International |
| ISSN: | 1614-7499 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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