Pesticides in Water, Fish and Shellfish from Littoral Area of Lake Biwa

Abstract

A survey of 29 pesticides were performed for water, fish and shellfish from two littoral areas of Lake Biwa and Yanamune River in 2007. Three insecticides, 5 fungicides and 13 herbicides were detected in the water from the sampling locations, but the insecticides and fungicides were not and the only 9 herbicides were detected in the fish and shellfish from the locations. Bioconcentration factors (BCF) of the 9 herbicides in the fish and shellfish were calculated by the field data obtained from the survey. The average field BCF values of the herbicides in the fish were 8 and 25 for molinate, 5-23 for bromobutide, 4 and 10 for simetryn, 100-214 for esprocarb, 15-41 for pretilachlor, 148 for anilofos, 14 and 79 for mefenacet and 78 for cafenstrole. Those in the shellfish were 6 and 13 for bromobutide, 4 and 8 for simetryn, 67 and 135 for esprocarb, 2 for pretilachlor, 117 for pyributicarb and 57 and 139 for mefenacet. The field BCF data in the fish were evaluated by laboratory BCF data from literatures for molinate, bromobutide, pretilachlor, simetryn and mefenacet.

Effectiveness and pathways of electrochemical degradation of pretilachlor herbicides

“…It is reported that pretilachlor is moderate toxicity, however it is extremely toxic to the aquatic organism, which may cause the long-term adverse effects to the aquatic environment (Chemblink CAS database 51218-49-6). Currently, the researches on pretilachlor are mainly concentrated on the fate of pretilachlor after it goes into the environment [6][7][8]. However, there are few reports on removal of pretilachlor from the environment.…”

Structural effects of organobentonites on controlled release of pretilachlor

“…Pretilachlor has a low toxicity to humans and mammals, however it is highly toxic to the aquatic organisms (Hatakeyama et al, 1994;Inderjit and Kaushik, 2010;Toan et al, 2013). Due to its chemical stability, pretilachlor is prone to accumulate in water bodies and is concentrated in aquatic organisms like fish and shellfish, bringing the potential risk to the aquatic ecosystems (Uno et al, 2001;Tsuda et al, 2009).…”

Development of a Matrix Solid Phase Dispersion methodology for the determination of triazine herbicides in mussels

“…The more frequently used methodologies for the analysis of triazines in samples of animal origin employ solvent extraction procedures such as soxhlet (Rosenblum, Hieber, & Morgan, 2001), shake flask (Baranowska, Barchanska, Abuknesha, Price, & Stalmach, 2008;Tsuda, Nakamura, Inoue, & Tanaka, 2009), sonication (Carafa et al, 2007;Salvadó, Quintana, & Hidalgo, 2006), microwave-assisted extraction (MAE) (Cheng et al, 2007;Fernández et al, 2013) and pressurised liquid extraction (PLE) (Damásio et al, 2010;Köck et al, 2010). Nevertheless, they generally need to add a clean-up step to decrease the presence of interferents in the final extract to reduce the detection limits of the methods and to avoid inaccurate results in the chromatographic determination.…”