查询词典 pesticides

Concentrations of HCH ranged from non-detectable to 19.63?ng·g~(-1) with an average of 0.50?ng·g~(-1); and coencentrations of DDT ranged from non-detectable to 176.01?ng·g~(-1) with an average of 4.42?ng·g~(-1), respectively. The concentrations of other Organochlorinated pesticides such as heptachlor, aldrin, and dieldrin were not detected.

采用气相色谱分析方法测定了官厅水库周边地区土壤样品中HCH、DDT、七氯、艾氏剂等多种有机氯农药的含量，采用数理统计方法研究了不同土地利用类型、不同采样方位与土壤中有机氯农药含量的关系。

This paper studied four pretreatment methods by adding three different retention time organochlorine pesticides(α-BHC、Dieldrin、pp′-DDT) to fish sample and making different concentration(0.01、0.1、1),then using GC-ECD determinate its recoveries.

研究了用气相色谱——电子捕俘器法测定鱼肉中有机氯农药的四种不同前处理方法。通过向鱼样中加入三种不同保留时间的有机氯农药(α—六氯苯、狄氏剂、滴滴涕)，并测定三种不同浓度(0.01、0.1、1)时加标回收率。

The uptake rate and equilibrium time of organochlorine pesticides were obtained during the laboratory experiment. All the equilibrium time are 594 hours except that δ-BHC's is 234 hours and both p, p'-DDE and o, p-DDT's are 70 hours. Uptake rates of α-BHC, hexachlorobenzene,β-BHC,γ-BHC,δ-BHC, heptachlor, aldrin, heptachlor epoxide, p, p'-DDE, dieldrin, endrin, p, p'-DDD, o, p-DDT and p, p'-DDT are 0.061, 0.071, 0.098, 0.066, 0.033, 0.014, 0.007, 0.062, 0.108, 0.052, 0.029, 0.032, 0.061mL/h, respectively.

得出了有机氯农药在水相和半透膜之间分配的平衡时间和富集系数，平衡时间除δ-BHC为234h和p，p'-DDE、o，p-DDT为70h外，其余组分均为594h；α-BHC、六氯苯、β-BHC、γ-BHC、δ-BHC、七氯、艾氏剂、七氯环氧、p，p'-DDE、狄氏剂、异狄氏剂、p，p'-DDD、o，p'-DDT、p，p'-DDT富集系数分别为：0.061、0.071、0.098、0.066、0.033、0.014、0.007、0.062、0.108、0.052、0.029、0.032、0.061mL/h。

Both methods are time- and solvent-consuming during the processing. In this study, headspace solid-phase dynamic extraction was applied to exame 13 organochlorine pesticides (γ-HCH、heptachlor、δ-HCH、aldrin、heptachlor epoxide、o,p'-DDE、α-endosulfan、p,p'-DDE、dieldrin、endrin、o,p'-DDT、β-endosulfan、p,p'-DDT) in water and soils. That was a rapid, solvent free and no clean-up procedures technology.

本研究以近年发展之顶空微针动态抽取技术(Headspace solid-phase dynamic extraction， HS-SPDE)进行水及土壤中十三种有机氯农药(γ-HCH、heptachlor、δ-HCH、aldrin、heptachlor epoxide、o，p'-DDE、α-endosulfan、p，p'-DDE、dieldrin、endrin、o，p'-DDT、β-endosulfan、p，p'-DDT)检测方法建立，此技术为一无需溶剂萃取，不需净化之快速检测方法。

Objective A multiresidue method based on solid-phase extraction andgas chromatography with electron capture detector was developed for thesimultaneous determination of 15 pesticides (Dichlorvos, Dimethoate,Parathion-methyl, Malathion, Parathion, Fenpropathrin, Lambda-cyhalothrin,Cypermethrin,Esfenvalerate,Deltamethfin,Quintozene,Dieldrin,Heptachlor,α-Endosulfan,β-Endosulfan) in drinking water.

目的：建立同时检测饮用水中15种农药残留的固相萃取-气相色谱分析方法，所检测的农药包括5种有机磷：敌敌畏，乐果，甲基对硫磷，马拉硫磷，对硫磷；5种有机氯：五氯硝基苯，狄氏剂，环氧七氯，α-硫丹，β-硫丹；5种拟除虫菊酯：甲氰菊酯，三氟氯氰菊酯，氯氰菊酯，氰戊菊酯，溴氰菊酯。

Through reviewing the reproductive toxicity of some major environmental chemical pollutants, including endocrine disrupters, organic phosphor and chlorine pesticides, organic solvents, and some metals such as lead, cadmium, mercury, manganese, the paper finds that all these ECPs have different extents of toxic effects to experimental auimals on procreation, gestation and even on offspring, some of which have been evidenced by the population epidemiological studies.

本文通过对邻苯二甲酸酯类和双酚A等内分泌干扰物、有机磷和有机氯农药、常用有机溶剂以及常见金属的生殖毒性研究的综述，发现它们均在不同程度上造成对实验动物的生殖毒性、妊娠毒性以及对子代的毒性影响，其中部分在人群流行病学研究上得到证实。

Effects of 3 kinds of plant-based materials including 14 materials on Blattella germanica were studied, Effects of 2 kinds of expellents and 2 kinds of pesticides were also studied, for the propose of comparation with the plant-based materials and evaluation of the latter.

本研究选用三大类共14种植物性物质对德国小蠊的防治进行了研究，同时对2种常用驱避剂和2种常用卫生害虫杀虫剂对德国小蠊的作用进行了测定，以期对植物性物质的作用进行比较评价。

The specifications contained herein have been carefully reviewed and agreed by the Group on Pesticide Specifications of the FAO Panel of Experts on Pesticide Specifications, Registration Requirements, Application Standards and Prior Informed Consent after consultations with official government scientists, the pesticides industry through GIFAP (Groupement International des Associations Nationales de Fabricants de Produits Agrochimiques or, in English, International Group of National Associations of Manufacturers of Agrochemical Products) and, where appropriate, with individual manufacturers.1

这里提到的一些关于成分之类的规章是粮农组织中研究农药规格，注册要求，应用标准和事先知情同意的专家小组在同政府官方的专家，通过GIFAP认证的农药产业，及各地的生产商协商后，经过细心审查，才获得通过的。不知道这是不是一篇六级的文章，如果是的话，我想说的是，其实，做题的时候没有必要把每一句话都看得明白的。

The company mainly produces all kinds of food packaging bag, and daily chemical products packing bag, speed of cold ice pack, pesticides, veterinary drug products bag, seeds and animal feed bag marked bottles.

公司主要生产各种食品包装袋，日用化工产品包装袋，速冷冰袋、农药，兽药产品包装袋，种子及饲料包装袋饮料瓶标。

In addition, research reveals that in many cases, eating "free-range" and "organic" meat, dairy, and eggs does not substantially reduce greenhouse gas emissions, because free-range cattle, for example, are not fattened as quickly as feedlot cattle, so the reductions in carbon dioxide equivalents in foregoing chemical fertilizers and pesticides are nearly offset by these factors.

此外，研究也揭示：在许多案例中，吃&自由放养&的和&有机&的肉、乳制品和蛋实际上并未减少温室气体的排放。例如，自由放养的牛长胖的速度不如养殖场的牛，所减少的二氧化碳排放量大体跟前面提到的化肥和农药等因素造成的碳排量等值，正好两相抵消。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。