Distribution and toxicity of current-use insecticides in sediment of a lake receiving waters from areas in transition to urbanization

Addition of contaminant bioavailability and species susceptibility to a sediment toxicity assessment: Application in an urban stream in China

“…Individually, six pyrethroids, namely cypermethrin, bifenthrin, lambda-cyhalothrin, esfenvalerate, fenpropathrin and permethrin, had >0.1 TU in at least one sediment, with median TUs being 3.1, 0.93, 0.27, 0.10, 0.05, and 0.05, respectively (Table 1). Cypermethrin was the major contributor to toxicity, which was consistent with previous studies in China (Mehler et al, 2011a;Wang et al, 2012). Moreover, toxicity to H. azteca was directly related with the sum TUs from all pyrethroids (Spyr-TU) as shown in Fig.…”

Mitigating pesticide pollution in China requires law enforcement, farmer training, and technological innovation

“…Fewer studies have been conducted on other organochlorine insecticides and current-use pesticides compared with DDT and HCH [12,[16][17][18]. Although the environmental occurrence of current-use pesticides has only been sparsely investigated in China, their adverse impacts on society have been noted; for instance, poisoning events associated with organophosphate insecticides and carbamates are frequently headline news.…”

“…Consequently, abundant current-use pesticides have been detected in aquatic systems of China [12,17,22]. A survey of organophosphate insecticides in surface water at the national scale suggested that Chinese rivers have been contaminated by dichlovos and demeton [22].…”

Determination of emerging contaminants in environmental matrices

“…Moreover, PYs may have a negative impact on the environment, primarily on water bodies, due to their toxicity to arthropods (Song et al, 2015;Wang et al, 2012;Weston et al, 2005) and their bioaccumulation potential in fish (Corcellas et al, 2015). There are several processes involved in the contamination mitigation, such as hydrolysis, photolysis, adsorption, microbial degradation and plant uptake.…”

“…Emerging contaminants (ECs) have raised concern among the scientific community because of their ubiquitous presence in different environmental compartments Bell et al, 2013;Wang et al, 2012;Wu et al, 2011) and the risk they may pose to the environment and human health, taking also into account their potential bioaccumulation in animals (Corcellas et al, 2015;Ortiz de Garcia et al, 2013) and uptake by plants (Tanoue et al, 2012;Wu et al, 2011), which are routes for entering the food chain (Calderon-Preciado et al, 2011;Goldstein et al, 2014;Rodil et al, 2012).…”