Yokoyama Sayako, Ito Masataka, Nagasawa Shunsuke, Morohashi Masayuki, Ohno Masaki, Todate Yukitaka, Kose Tomohiro, Kawata Kuniaki
Faculty of Applied Life Sciences, Niigata University of Pharmacy and Applied Life Sciences, 265-1 Higashijima, Akiha-ku, Niigata, Niigata, 956-8603, Japan.
Bull Environ Contam Toxicol. 2015 Jun;94(6):796-800. doi: 10.1007/s00128-015-1554-0. Epub 2015 Apr 28.
Variation, run-off and degradation characteristics of the insecticide dinotefuran, (EZ)-(RS)-1-methyl-2-nitro-3-(tetrahydro-3-furyl-methyl)guanidine, in water and soil from two paddy fields after aerial application was investigated as well as in river water. Maximum concentrations of dinotefuran were 290 and 720 µg/L in the two paddy waters, 25 and 28 µg/kg dry in the two paddy soils, and 10 µg/L in the river water. Runoff ratios of dinotefuran from the paddy fields were calculated as 14%-41%. Mean half-lives of dinotefuran were 5.4 days in the paddy water and 12 days in the paddy soil. Results obtained in this study are important for the evaluation of the actual behavior of dinotefuran in paddy fields and rivers.
研究了杀虫剂烯啶虫胺（(EZ)-(RS)-1-甲基-2-硝基-3-(四氢-3-呋喃基甲基)胍）在两个稻田空中施药后水和土壤以及河水中的变异、径流和降解特性。烯啶虫胺在两个稻田水中的最大浓度分别为290和720 µg/L，在两个稻田土壤中的最大浓度分别为25和28 µg/kg干重，在河水中为10 µg/L。计算得出烯啶虫胺从稻田的径流率为14%-41%。烯啶虫胺在稻田水中的平均半衰期为5.4天，在稻田土壤中为12天。本研究获得的结果对于评估烯啶虫胺在稻田和河流中的实际行为具有重要意义。
