Occurrence, variability and human exposure to Polychlorinated Dibenzo-p-dioxins (PCDDs), Polychlorinated Dibenzofurans (PCDFs) and Dioxin-Like Polychlorinated Biphenyls (DL-PCBs) in dairy products from Chile during the 2011–2013 survey

Pizarro-Aránguiz, N.; Galbán-Malagón, Cristóbal; Ruiz-Rudolph, Pablo; Araya-Jordán, C.; Maddaleno, Aldo; Martín, Betty San

doi:10.1016/j.chemosphere.2014.10.087

Cited by 23 publications

(14 citation statements)

References 61 publications

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“…They may be introduced into the environment through accidental leaks and fires in electrical equipment, past disposal in dumps, accidents in transportation of equipment with PCBs, and leakage from hazardous waste sites (Yang et al 2009). Since they are regarded as persistent organic pollutants (PoP) by Stockholm Convention, they could seriously threaten the environment, animal, and human health (Brown et al 1994;Berg et al 2013;Pizarro-Aránguiz et al 2015;UNEP 2009), depending on their concentrations, the type of PCB congener, and extent of exposure (Zhang et al 2014). There are concerns about their persistent and toxic nature that led to their eventual ban on production throughout the world in the late 1970s (Breivik et al 2007).…”

Section: Introductionmentioning

confidence: 99%

PCBs in fish and their cestode parasites in Lake Victoria

Oluoch-Otiego

Oyoo–Okoth

Kiptoo

et al. 2016

Environ Monit Assess

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Polychlorinated biphenyls (PCBs) are classified as persistent organic pollutants (POPs) regulated by the Stockholm Convention (2001). Although their production and use was stopped almost three decades ago, PCBs are environmental persistent, toxic, and bioaccumulate in biota. We assessed the levels of 7 PCB congeners (IUPAC nos. 28, 52, 101, 118, 138, 153, and 180) in sediment and fish (Oreochromis niloticus, Lates niloticus, and Rastrineobola argentea) and evaluated the potential of cestode fish endoparasite (Monobothrioides sp., Proteocephalaus sp., and Ligula intestinalis) as biomonitors of PCBs in Lake Victoria, Kenya. The median concentration of Σ7PCBs in sediments and fish were 2.2-96.3 μg/kg dw and 300-3,000 μg/kg lw, respectively. At all the sampling sites, CB138, CB153, and CB180 were the dominant PCB congeners in sediment and fish samples. Compared to the muscle of the piscine host, Proteocephalaus sp. (infecting L. niloticus) biomagnified PCBs ×6-14 while Monobothrioides sp. (infecting O. niloticus) biomagnified PCBs ×4-8. Meanwhile, L. intestinalis (infecting R. argentea) biomagnified PCBs ×8-16 compared to the muscle of unparasitized fish. We demonstrate the occurrence of moderate to high levels of PCB in sediments and fish in Lake Victoria. We also provide evidence that fish parasites bioaccumulate higher levels of PCBs than their piscine hosts and therefore provide a promising biomonitor of PCBs. We urge further a long-term study to validate the use of the above cestode fish parasites as biomonitoring tools for PCBs.

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Section: Introductionmentioning

confidence: 99%

PCBs in fish and their cestode parasites in Lake Victoria

Oluoch-Otiego

Oyoo–Okoth

Kiptoo

et al. 2016

Environ Monit Assess

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“…Previously reported data, which are summarized in Table 1 and Supplementary Tables S1 and S2, were used in the present analyses (Pizarro-Aránguiz et al, 2015). In summary, milk samples were taken between August 2011 and December 2013 for the national monitoring program that was carried out by the Agricultural and Livestock Service of Chile (SAG).…”

Section: Pcdd/fs and Dl-pcbs Datamentioning

confidence: 99%

“…In a previous study, Pizarro-Aránguiz et al (2015) reported results of a three-year survey of these pollutants in milk samples from seven different regions in the central valley of Chile, with clear spatial differences shown between samples that originated near the most and least populated cities. Considering this prior evidence and despite scarce atmospheric and animal foodfeed data concerning dioxin levels within the cow-milk cycle in Chile, the aim of this work is to assess possible relationships between raw cow milk pollutant levels, specifically the seventeen polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) congeners, and twelve dioxin-like polychlorinated biphenyls congeners (dl-PCBs) with various meteorological and geographical factors within Chile's central valley regions.…”

Section: Introductionmentioning

confidence: 99%

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

Pizarro-Aránguiz

García-Mendoza

Muñoz

et al. 2018

Ciencia e investigación agraria

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Impact of environmental variables on PCDD/F and dl-PCB levels in dairy milk of the farming region of Chile. 2018. Cien. Inv. Agr. 45(2): 109-119. 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.

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“…DL PCBs are potent activators of the aryl hydrocarbon receptor (Vondracek et al, 2005). Previous assessment of POP contamination of dairy products have primarily evaluated DL-compounds (Focant et al, 2003; Durand et al, 2008; Pizarro-Aranguiz et al, 2015) because, in the past, these compounds were considered to be the most toxic. However, NDL-PCBs dominate over DL-PCBs in biological and environmental samples (DeCaprio et al, 2005), and specifically multiple NDL-PCBs have been shown to be potent neurodevelopmental toxicants (Schantz et al, 1997; Howard et al, 2003; Yang et al, 2009; Yang and Lein, 2010; Wayman et al, 2012; Lesiak et al, 2014; Yang et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Polychlorinated biphenyl and polybrominated diphenyl ether profiles in serum from cattle, sheep, and goats across California

et al. 2017

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It has been previously been shown by our lab and others that persistent organic pollutants, such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs), are contaminants in milk produced for human consumption. To further this research we determined the concentration of 21 PCB and 14 PBDE congeners in livestock serum, mainly bovine, across California. Congeners were extracted from serum using solid phase extraction (SPE), cleaned up by silica cartridge and quantified using gas chromatography-triple quadruple mass spectrometry. We detected significant differences among species and the production class of cattle (beef or dairy). The sum of all 21 PCB congeners (ΣPCBs) in caprine and ovine sera had a mean value of 9.26 and 9.13 ng/mL, respectively, compared to 3.98 ng/mL in bovine sera. The mean value for the sum of all 14 PBDE congeners (ΣPBDEs) in caprine and ovine sera was 2.82 and 2.39 ng/mL, respectively, compared to 0.91 ng/mL in bovine sera. Mean ΣPCBs in dairy cattle was 5.92 ng/mL compared to 2.70 ng/mL in beef cattle. Mean ΣPBDEs in dairy cattle was 1.33 ng/mL compared to 0.70 ng/mL in beef cattle. There were no regional differences in the ΣPCBs or ΣPBDEs in cattle distributed across California. These results highlight the fact that livestock are still being exposed to these pollutants yet little is known about where this exposure may be coming from.

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Occurrence, variability and human exposure to Polychlorinated Dibenzo-p-dioxins (PCDDs), Polychlorinated Dibenzofurans (PCDFs) and Dioxin-Like Polychlorinated Biphenyls (DL-PCBs) in dairy products from Chile during the 2011–2013 survey

Cited by 23 publications

References 61 publications

PCBs in fish and their cestode parasites in Lake Victoria

PCBs in fish and their cestode parasites in Lake Victoria

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

Polychlorinated biphenyl and polybrominated diphenyl ether profiles in serum from cattle, sheep, and goats across California

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