https://www.selleckchem.com/products/BMS-754807.html Our results will provide valuable information for assessment of the potential health risks of microplastics in China's seafood.Pydiflumetofen is a new succinate dehydrogenase inhibitor fungicide, and the method for determination of its residues in rice and associated environmental samples has not yet been reported. Here, we optimized, Quick Easy, Cheap, Effective, Rugged, Safe (QuEChERS) method for sample preparation, and used high performance liquid chromatography-tandem mass spectrometry (HPLC-MS) to detect the residual amounts of pydiflumetofen in rice and its environment. The results showed that there was a good linearity over the pydiflumetofen concentration range of 0.01-0.1 mg/L in all matrices (R2 > 0.99). At the spiked levels of 0.01, 0.05, and 0.1 mg/kg, the recovery rates of pydiflumetofen from various matrices were between 84.23 and 105.10 %, with the relative standard deviation of 1.07-9.99 %. The limit of detection (signal-to-noise ratio = 3) of the proposed method for pydiflumetofen was in the range of 1.9-3.5 µg/kg, and the limit of quantification (signal-to-noise ratio = 10) was in the range of 6.3-11.7 µg/kg.The Atacama Desert represents the highest levels of mining exploitation in Chile, which inexorably results in high levels of pollution. Raptors, and particularly scavengers, have shown their usefulness to evaluate exposure to environmental contaminants in polluted scenarios. In this study, we used primary feathers from a local avian scavenger, turkey vulture Cathartes aura, to evaluate the exposure to cadmium (Cd), lead (Pb), copper (Cu) and zinc (Zn) in two locations from the southern Atacama Desert (coastal and inland) and a third location from the bordering semiarid region, in northern Chile. All metals were detected in all analyzed samples (n = 54). Mean concentrations in Coastal Atacama were 0.68 ± 0.84 ppm for Cd; 1.97 ± 2.01 ppm for Pb; 59.11 ± 80.69 ppm for Cu; and 107.96 ± 51.00 ppm