PMID- 26223220 OWN - NLM STAT- MEDLINE DCOM- 20160226 LR - 20181202 IS - 1573-2959 (Electronic) IS - 0167-6369 (Linking) VI - 187 IP - 8 DP - 2015 Aug TI - Dissipation and residues of picoxystrobin in peanut and field soil by QuEChERS and HPLC-MS/MS. PG - 539 LID - 10.1007/s10661-015-4773-2 [doi] AB - The dissipation and final residues of picoxystrobin in peanut and soil were determined by a modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) method and high-performance liquid chromatography tandem mass spectrometry (HPLC-MS/MS). The dissipation and final residue of picoxystrobin at three different provinces (Hebei, Hubei, and Shandong) in China were studied. The fortification experiments at three different spiking levels of 0.01, 0.05, and 0.5 mg kg(-1) in all matrices (soil, peanut seedling, shell, stalk, and kernels) were conducted, and the recoveries were 79-114% with relative standard deviations of 3-12 (n = 5). The dissipation half-lives of picoxystrobin were 1.5-8.6 days in soil, and 2.1-2.8 days in seedlings. The final residues of picoxystrobin in supervised field trials were 0.05-6.82 mg kg(-1) in stalk,