Impact of environmental variables on PCDD/F and dl-PCB levels in dairy milk of the farming region of Chile

Ciencia e Investigación Agraria

Diego Garcia-Mendoza¹  Nicolás Javier Pizarro-Aránguiz²  Rodrigo Morales Pavez²  Betty San Martín Nuñez³  Ruben Muñoz-Obregon³ 

[1] Division of Toxicology, Wageningen University, 6708 PB Wageningen, Netherlands;Laboratory of Food Quality and Safety, INIA-Remehue, Carretera Panamericana Sur Km 8 Norte, 5290000 Osorno.;Laboratory of Veterinary Pharmacology, Faculty of Veterinary Science, Universidad de Chile, Av. Sta. Rosa 11735, 8820808 Santiago, Chile

关键词: Dioxin-like polychlorinated biphenyls;    environmental variables;    food contamination;    persistent organic pollutants;    polychlorinated dibenzo-p-dioxins;    polychlorinated dibenzofurans;   

DOI  :  10.7764/rcia.v45i2.1887

学科分类：农业科学（综合）

来源: Pontificia Universidad Catolica de Chile

【 摘 要 】

According to a One Health perspective, the importance of persistent organic pollutants (POPs) must be assessed because of their impact on the environment, food chain and human health. However, information on these toxic compounds is limited in Latin America and the Caribbean region. Chile is no exception; therefore, this work aimed to explain previously reported dioxin levels in cow-milk samples by utilizing regression with meteorological/geographical data that were collected over a three-year survey. To accomplish this aim, a stepwise general multiple regression analysis was carried out for polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and dioxin-like polychlorinated biphenyls (dl-PCBs). The best statistical adjustments were achieved only for highly present congeners. Regarding PCDD/F congeners, the most relevant and significant (P <0.05) factors were the year (mostly a negative coefficient), the season, and the hectares affected by forest fires. In the case of dl-PCB congeners, there was a clear, positive relationship with the geographic parameter (UTM), and this result was consistent with previous findings that dl-PCB congeners show a trend with latitude. In contrast, wind speed was a significant negative coefficient for dl-PCBs. Despite existing knowledge on pollutant levels in milk, this study is relevant to better understand these findings in the Latin America and Caribbean regions.

【 授权许可】

Unknown