Persistent halogenated compounds in aquaculture environments of South China: Implications for global consumers’ health risk via fish consumption

Inputs of antifouling paint-derived dichlorodiphenyltrichloroethanes (DDTs) to a typical mariculture zone (South China): Potential impact on aquafarming environment

“…The input fluxes of DDTs to the typical aquaculture zones in South China via antifouling paints were one to several orders of magnitude greater than those through atmospheric wet and dry deposition, airewater exchange and fish feeding estimated by our previous study (Yu et al, 2011b). In addition, the riverine input flux of DDTs to Hailing Bay estimated with the average concentration (5.5 ng/L) of DDTs in Fengtou River (Fig.…”

“…than those through other pathways except for antifouling paints in typical mariculture zones of South China. The relative uptake abundances of p,p 0 -and o,p 0 -DDT, -DDD and -DDE accumulated in fish were also much higher through fish feeding than via uptake of phytoplankton and gill diffusion (Yu et al, 2011b). Apparently, fish feed may have been a major source of DDTs in fish compared to antifouling paints in the mariculture environment of South China.…”

“…This suggests that input sources other than antifouling paints in water also contributed to the DDT loadings in fish. Another previous study (Yu et al, 2011b) estimated that input fluxes of DDTs via fish feeding were one to several orders of magnitude greater Table 1 Measured concentrations (mg/g wet weight) of DDT and its metabolites in antifouling paint products. Samples coded 1e7 were collected from a boat maintenance facility and purchased from a local store right along the coast of Hailing Bay (Fig.…”

“…It was also demonstrated that the mariculture environment in South China was somewhat impaired by the occurrence of DDTs and consumption of seawater farmed fish might subject consumers to moderate cancer risk (Yu et al, 2011b,c). A recent study (Yu et al, 2011b) indicated that antifouling paints might be an important source of DDTs to the mariculture zones of South China. Despite the recent efforts in characterizing the levels and mass inventories of antifouling paintsderived DDTs in the coastal environment of China , studies on the concentrations and compositions of DDTs in antifouling paints have been scarce .…”

Aquatic biota as potential biological indicators of the contamination, bioaccumulation and health risks caused by organochlorine pesticides in a large, shallow Chinese lake (Lake Chaohu)

“…Aquatic biota are frequently used as biological indicators to monitor the levels of Persistent Organic Pollutants (POPs) in aquatic environments (van der Oost et al, 2003;Lanfranchi et al, 2006;Guo et al, 2008;Zhao et al, 2013;Lacorte et al, 2006;Jaspersa et al, 2013), to analyze POP bioaccumulation (Haruhiko et al, 2003;Arnot and Gobas, 2006;van Leeuwen et al, 2008;Coat et al, 2011) and biomagnification in the food chain (Hu et al, 2010;Zhang et al, 2013;Villa et al, 2011;Li et al, 2008b), and to evaluate human health risks associated with the consumption of contaminated water products (Dong et al, 2006;Cheung products, such as lindane (which is 99% gamma-HCH) and dicofol (which contains DDT analogs that form as manufacturing impurities), are still used in some regions of China (Qiu et al, 2005), and DDT is also used as a secondary material in antifouling paint for ships (Yu et al, 2011). As a result, OCPs have continued to be detected in water and aquatic biota throughout China in recent years (Li et al, 2007;Guo et al, 2008;Tao et al, 2005Tao et al, , 2008He et al, 2012;Xu et al, 2013;Ouyang et al, 2012Ouyang et al, , 2013Ouyang et al, , 2014.…”