Determination of DDT and its metabolites in soil, tree bark and earthworm samples near the Budapest chemical works

Oláh Marianna and Mörtl Mária and Darvas Béla and Székács András: Determination of DDT and its metabolites in soil, tree bark and earthworm samples near the Budapest chemical works.

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An abandoned industrial site of the former Budapest Chemical Works (BVM) company has been found to contain 2000-3000 tonnes of leaking industrial waste and dangerous chemicals in corroded barrels on bare ground. The waste lot includes general industrial reagents and intermediates, some 100-200 tonnes of sulphuric acid, several hundred tonnes of 1.2 dichlorobenzene and isopropanol, and numerous other substances falling into toxicity categories from toxic to very toxic or carcinogenic, such as dinitrobenzoic acid, as well as chemical wastes from the pesticide production of the company. BVM used to manufacture numerous pesticide active ingredients, including chlorinated hydrocarbons. Thus, it produced the insecticide DDT in large quantities until the ban of the compound in 1968 and derogated approval for sales until 1974. The premises of the company has been reported previously to be contaminated, therefore, in the scope of our pesticide residue monitoring surveys between 2015 and 2019, we carried out sampling in its immediate vicinity. In our study, soil (8 samples), surface water (2 samples), tree bark (Robinia pseudoacacia, Sambucus nigra, Populus nigra) and common reed (Phragmites australis, (6 samples), as well as earthworms (Lumbricus terrestris; 1 sample) sampled next to BVM were analyzed for DDT and metabolite (~DDT) levels. Exceedingly high ~DDT levels above the accepted limit (0.1 mg/kg) were detected in soil samples: nearly 1.5 mg/kg in one sample and 0.11-0.484 mg/kg in other 5 cases. Among the biological samples (tree bark, common reed and earthworm) 0.184 and 0.190 mg/kg concentrations of ~DDT were determined in a black poplar and in an earthworm sample. These findings indicate that the wellknown persistency problem related to chlorinated hydrocarbon insecticides, particularly to DDT remains actual to our days.

Item Type: Conference or Workshop Item
Journal or Publication Title: Proceedings of the International Symposium on Analytical and Environmental Problems
Date: 2020
Volume: 26
ISBN: 978-963-306-771-0
Page Range: pp. 274-278
Language: English
Event Title: International Symposium on Analytical and Environmental Problems (26.) (2020) (Szeged)
Related URLs:
Uncontrolled Keywords: Környezetszennyezés, Analitikai kémia, Talajkémia
Additional Information: Bibliogr.: 278. p. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.04. Chemical sciences
Date Deposited: 2021. Nov. 18. 09:04
Last Modified: 2022. Aug. 08. 15:39

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