Determination of endocrine disruption compounds from extract agents by gc - ms 检测萃取剂中内分泌干扰物
Study on extractive distillation of dimethyl carbonate from its azeotrope with methanol using toluene as extracting agent 甲苯萃取精馏分离甲醇与碳酸二甲酯共沸物
In this paper , nono - particles are dispersed in extracting agent , and uhmwpe fiber dispersed with nano - particles is prepared after extracted with the composite extracting agent 本论文将纳米粒子分散在萃取剂中,用此复合萃取剂对uhmwpe冻胶纤维进行萃取,制成了纳米粒子均匀分散的uhmwpe纤维。
The optimum method of tta extraction : the extracting agent cocentration is 0 . 5mol / l , the diluent is xylene , the extracting media is nitric acid , its concentration is 4mol / l , the extracting time is lomin Tta萃取分离的最佳分离方案:萃取剂浓度为0 . 5mol / l ,稀释剂采用二甲苯,采用4mol / l的硝酸做为萃取介质,每次萃取时间为10min 。
Whether there exists solvent in uhmwpe fibers or not , nano - particles could diffuse into uhmwpe gel fiber after immersed the gel fiber in nano - particles composite extracting agent , and gel fiber has quite strong absorption to nano - particles 无论纤维中溶剂存在与否,将uhmwpe冻胶纤维置于分散有纳米粒子的萃取液中一定时间,纳米粒子均可扩散进入uhmwpe冻胶纤维,且冻胶纤维对纳米粒子有较强的吸附作用。
The analytical method for five pesticide residues of pyrethroid , such as fenpropathrin , cypermethrin , fenvalerate , deltamethrin and bifenthrin in potable water and source water determination by capillary gas chromatography at the same time , with n - hexane for extracting agent 摘要以正己烷为萃取剂,采用毛细管气相色谱法同时测定生活饮用水及水源水中甲氰菊酯、氯氰菊酯、氰戊菊酯、溴氰菊酯和联苯菊酯五种拟除虫酯类农药残留量。