Atrazine pollution in groundwater and raw bovine milk: Water quality, bioaccumulation and human risk assessment.

Autor: Urseler N; Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas (IAPCByA), Universidad Nacional de Villa María, Instituto Multidisciplinario de Investigación y Transferencia Agro-alimentaria y Biotecnológica, IMITAB-CONICET, Av. Arturo Jauretche 1555 (CP 5900), Villa María, Córdoba, Argentina. Electronic address: noe_urseler@outlook.com., Bachetti R; Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas (IAPCByA), Universidad Nacional de Villa María, Instituto Multidisciplinario de Investigación y Transferencia Agro-alimentaria y Biotecnológica, IMITAB-CONICET, Av. Arturo Jauretche 1555 (CP 5900), Villa María, Córdoba, Argentina., Biolé F; Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas (IAPCByA), Universidad Nacional de Villa María, Instituto Multidisciplinario de Investigación y Transferencia Agro-alimentaria y Biotecnológica, IMITAB-CONICET, Av. Arturo Jauretche 1555 (CP 5900), Villa María, Córdoba, Argentina., Morgante V; Centro de Investigación en Recursos Naturales y Sustentabilidad (CIRENYS), Universidad Bernardo O'Higgins, Avenida Viel 1497, Santiago de Chile, Chile., Morgante C; Instituto Académico Pedagógico de Ciencias Básicas y Aplicadas (IAPCByA), Universidad Nacional de Villa María, Instituto Multidisciplinario de Investigación y Transferencia Agro-alimentaria y Biotecnológica, IMITAB-CONICET, Av. Arturo Jauretche 1555 (CP 5900), Villa María, Córdoba, Argentina.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2022 Dec 15; Vol. 852, pp. 158498. Date of Electronic Publication: 2022 Sep 03.
DOI: 10.1016/j.scitotenv.2022.158498
Abstrakt: Atrazine herbicide can bioaccumulate over time and thus affect humans for generations to come. However, scarce studies have evaluated its bioaccumulation potential in bovine milk, a nutritional staple for children and the elderly both domestically and internationally. This study aimed to determine its concentration in groundwater and bovine milk, as well as the risks it is likely to pose for human health. Eighteen dairy farms in the Pampean plain of Argentina were analyzed. A strong correlation was found between the chemical composition and the geomorphological characteristics of the plain. In addition, increased salinity was observed in the groundwater at greater distances from the aquifer's recharge area. Atrazine was quantified in 50 % of the groundwater samples (at values ranging from 0.07 to 1.40 μg/L), and in 89 % of the bovine milk samples (from 2.51 to 20.97 μg/L). Moreover, atrazine levels in 44.4 % of the groundwater samples and 11.1 % of the bovine milk samples (n = 18) exceeded the limits internationally established as safe for human consumption. The hazard quotient (HQ) values of the compound were negligible for children and adults, both in groundwater (child = 9.7E-4, adult = 4.5E-4) and in milk (child = 1.0E-2, adult = 1.6E-3). The estimated cancer risk (CR) values need further evaluation (child = 7.8E-6, adult = 3.6E-6 in groundwater; child = 6.6E-5, adult = 1.3E-5 in milk). In both types of samples, the HQ and CR of residual atrazine were higher for children than for adults. Nevertheless, bioaccumulation factors suggest that dairy cows have a moderate capacity to incorporate atrazine from abiotic matrices. This is the first report on residual atrazine in bovine milk in Argentina. The results presented here indicate that the status of atrazine contamination in the area should continue to be monitored in order to assess its long-term impact on public health.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022. Published by Elsevier B.V.)
Databáze: MEDLINE
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