Methods: The twelve volatile halogenated hydrocarbons (1, 1-dichloroethene, dicloromethane, trans-1, 2-dichloroethene, cis-1, 2-dichloroethene, chloroform-1, 1, 1-trichloroethane-1, 2-dichloroethane, tetrachloromethane, bromodichloromethane, dibromochloromethane, tetrachloroentene and bromoform) in drinking water were determined by headspace capillary gas chromatography.

采用頂空毛細管柱氣相色譜法測定飲用水中1亚洲国产AⅤ美女黄软件网站，1-二氯乙烯www.yw尤物视频、二氯甲烷日韩欧美中文国产、反－1大秀视频网，2-二氯乙烯91三级片在线、順－1a片网站在线看，2-二氯乙烯、三氯甲烷又大又硬AV无码中文、1国产一级免费啪啪，1，1-三氯乙烷色色色鬼、1人人操操操，2-二氯乙烷、四氯化碳精品无码人妻遭多人侵犯Av、一溴二氯甲烷看久久久黄色精品视频、二溴一氯甲烷、四氯乙烯及三溴甲烷等12種揮發(fā)性鹵代有機物精品欧美哟哟。

This investigation focuses on pigment phthalocynine green G modified with octadcylamine, which is suspended in tetrachloroethylene and 1,2-dibromoethane using span-80 and CH-6 hyperdispersants as emulsifiers.

采用正交設(shè)計方法黄片AA片播放久久久，以十八胺改性酞菁綠G形成電泳顆粒，以四氯乙烯和1免费视频A片在线，2-二溴乙烷的復(fù)配液為分散介質(zhì)国产在线黄色网站，Span-80和CH-6超分散劑為穩(wěn)定劑，制備了分散性和穩(wěn)定性良好的電泳顯示液国产原创福利。

Both star copolymer precursors are hydrolyzed in the acidic conditions, then the corresponding recovered star copolymers of EO and glycidol with multi pending hydroxylmethyls are esterified with 2-bromoisobutyryl bromide to produce the ATRP macroinitiators with multi pending bromoisobutyryl groups . Then the latters initiate the polymerization of styrene to form the corresponding amphiphilic three- and four-arm star PEO-g-PS.

在陰離子共聚EPEE單體和環(huán)氧乙烷單體的過程中费一级无码婬片A片AAA毛片，通過變換引發(fā)劑體系中的醇的結(jié)構(gòu)(由原來的二元醇變成多元醇亚洲美女操逼视频一区二区，如三羥甲基丙烷和季戊四醇)，合成了星形結(jié)構(gòu)的共聚物国产网站视频，通過水解反應(yīng)脫去保護基團后国产黄色网站马上看，再與2-溴異丁酰溴反應(yīng)，得到鏈的側(cè)端掛有很多2-溴異丁酸酯基的星形大分子引發(fā)劑亚洲成熟，通過ATRP聚合機理引發(fā)苯乙烯聚合得到PEO為主鏈99成年小黄片，PS為側(cè)鏈的星形一接枝共聚物。