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Archives of Industrial Hygiene and Toxicology, Vol. 72 No. 4, 2021.

Original scientific paper

https://doi.org/10.2478/aiht-2021-72-3598

Seasonal distribution of multiclass pesticide residues in the surface waters of northwest Croatia

Sanja Fingler ; Institute for Medical Research and Occupational Health, Zagreb, Croatia
Gordana Mendaš orcid id orcid.org/0000-0002-2661-2465 ; Institute for Medical Research and Occupational Health, Zagreb, Croatia
Marija Dvoršćak ; Institute for Medical Research and Occupational Health, Zagreb, Croatia
Sanja Stipičević orcid id orcid.org/0000-0002-2021-9435 ; Institute for Medical Research and Occupational Health, Zagreb, Croatia
Želimira Vasilić ; Institute for Medical Research and Occupational Health, Zagreb, Croatia
Vlasta Drevenkar orcid id orcid.org/0000-0002-7430-0431 ; Institute for Medical Research and Occupational Health, Zagreb, Croatia

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Abstract

As part of our OPENTOX project, we evaluated the incidence and mass concentrations of multiclass pesticide residues in 23 river/stream water samples collected in urban and agricultural areas of northwest Croatia at various points of the pesticide application season in 2015. The study included 16 compounds of five herbicide classes and seven compounds of three insecticide classes. Pesticide residues were accumulated from water by solid-phase extraction and analysed using high performance liquid chromatography with UV-diode array detection and/or gas chromatography-mass spectrometry. Herbicide residues were more common than the insecticide ones, and, as expected, they peaked in the middle of the application season. Metolachlor showed the highest concentrations and was found in 91 % of all samples, followed by terbuthylazine, found in 70 % of the samples. The highest total mass concentration of detected pesticides was measured in the water samples of the Krapina (3992 ng/L) and Sutla (3455 ng/L) collected in rural areas with intensive agriculture. Our findings strongly speak in favour of continued monitoring of surface waters and possibly extending the list of priority water pollutants.

Keywords

degradation products; herbicides; insecticides; pesticide residues; river water; seasonal variations

Hrčak ID:

268065

URI

https://hrcak.srce.hr/268065

Publication date:

23.12.2021.

Article data in other languages: croatian

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