It forms a very thin monomolecular film on the water surface to which it is applied and causes suffocation of larvae and pupae 水中散开，慢慢在水面形成一层单分子膜，
4.
The formed long and linear chain alkyl benzene changes into benzene methyl and alkene through - scission and monomolecular homolysis , and then benzene methyl shifts to the position of - carbon in the long chain alkyl benzene through h - transfers 已形成的长直链烷基苯通过分裂、单分子均裂形成苯甲基、烯烃，苯甲基通过氢转移到长链烷基苯的碳上，烯烃再与碳结合形成带支链的烷基苯。
5.
The ability of counterion so42 - to improve fc16ab monolayer ' s compressibility is poorer than cl - . with the technology of lb film , the monomolecular film of fc16ab was deposited on to quartz and caf2 with hydrophilic surfaces on ultrapure water subphase , y - type lb film of transfer ratio approaching to 1 is obtained . the lb film is demonstrated with uv - vis , ft - ir spectra 利用lb膜技术将不同亚相上的fc _ ( 16 ) ab单分子膜沉积到具有亲水表面的石英基片和caf _ 2基片上，得到转移比接近1的y -型lb膜，并用uv - vis 、 ft - ir光谱lb膜进行了表征。
6.
The anion surfactant nals was the most efficient in the process and was selected as collector by orthogonal method . the interfacial tension and cmc of nals ( cmc 6 . 5 10 - 3m ) in the solution was measured by hanging ring test , the function relationship between interfacial tensions and nals concentration was : = - 0 . 9523 in 2c - 24 . 534 in c - 81 . 411 . the relation of interfacial adsorption equilibrium in the solution system was respectively tested and calculated with gibbs equation and dynamic method . the conclusion showed that ( 1 ) the experiment result of dynamic method with was highly in coordination with the value which from theoretical calculation . ( 2 ) the surfactant molecule was in arrangement of monomolecular layer at the gas - liquid interface 用吊环法测定了十二烷基硫酸钠水溶液不同浓度与其界面张力的关系，拟合得到的回归方程为= - 0 . 9523ln ~ 2c - 24 . 534lnc - 81 . 411 ，同时还测得其临界胶束浓度值( cmc为6 . 5 10 ~ ( - 3 ) m ) ，运用吉布斯等温方程和动态法分别计算和测定了该溶液系统的界面吸附平衡关系，结论表明： ( 1 )动态法测定结果基本吻合吉布斯方程的理论计算； ( 2 )表面活性剂分子在气?液两相界面是以单分子层形式定向有序排列的。
