欢迎来到天天文库
浏览记录
ID:12127546
大小:36.00 KB
页数:12页
时间:2018-07-15
《噻虫啉在土壤中的残留与降解研究 文献综述》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、---------------------------------------------------------------范文最新推荐------------------------------------------------------噻虫啉在土壤中的残留与降解研究+文献综述要:噻虫啉是新型氯代烟碱类杀虫剂。属于第二代新烟碱类杀虫剂,在国内外有着广泛的应用。具有较强的内吸,触杀和胃毒作用,与常规杀虫剂没有交互抗性,是防治刺吸式和咀嚼式口器害虫的高效药剂。本研究分别建立了土壤样品中噻虫啉残留的前处理方法和仪器分析
2、方法。并采用所建立的样品前处理和分析方法,对噻虫啉在土壤样品中的生物降解性进行研究。本论文对噻虫啉在土壤中的降解,吸附进行了研究,获得结论如下:噻虫啉降解研究表明,该药品的半衰期较短(5.7d),21d培养后的残留浓度为0.93mg/kg11/12---------------------------------------------------------------范文最新推荐------------------------------------------------------dw。在江西红壤中48小时吸附噻
3、虫啉量为0.78mg/g•L,48小时解吸量为122%;南京黄棕壤中48小时吸附噻虫啉量为0.8mg/g•L,48小时解吸量为81.6%;陕西灰漠土中48小时吸附噻虫啉量为0.9mg/g•L,48小时解吸量为94.5%关键词:噻虫啉;土壤;降解;吸附;解吸6551ThiaclopridresiduesanddegradationinthesoilAbstract:Thiacloprid,anewinsecticide,belongstoanewclassofinsecticidesknown
4、asneonicotinoids,hasbeenwidelyusedinChinaandothercountries.Ithasagoodstomachpoisonwithagreatcontactactivity.Withoutthecross-resistancetoconvwntionalinsecticides,thiaclopridisaefficientpharmacytopreventthesuckingandchewingmouthparts.Ahighperformanceliquidchromatog
5、raphy(HPLC)techniqueandPretreatmentmethodwasdevelopedfordeterminingresidueofthiaclopridinsecticideinsoil,andadopttheestablishedsamplepretreatmentandanalysismethodtostudythebiologicaldegradationofthiaclopridinsoilsamples.Thistextisresearchedaboutthiacloprid’
6、sdegradationandadsorbedinsoils,andgotthe11/12---------------------------------------------------------------范文最新推荐------------------------------------------------------conclusionsfollowed:Thestudyaboutthiaclopridsaidthisinsecticidehasahalf-lifeperiodabout5.7days.
7、Afterthe21day-grown,theresidualconcentrationisaconcentrationof0.93mg/kgdw.Growinthejiangxiredloam,thiaclopridisadsorbed0.78mg/g•Lafter48hours,anddesorbed122%afteranother48hours.Growinthenanjingyellow-brown,thiaclopridisadsorbed0.8mg/g•Lafter48hours,andd
8、esorbed81.6%afteranother48hours.Growintheshanxigraydesertsoil,thiaclopridisadsorbed0.9mg/g•Lafter48hours,anddesorbed94.5%afteranother48hours.1.7研究的目的与意义12
此文档下载收益归作者所有