双梳型共聚物在莠去津颗粒表面吸附的X射线光电子能谱分析  

X-ray Photoelectron Spectroscopy Study of Double Comb Shape Copolymer on Atrazine Particles Surface

作　　者：徐妍[1] 孙宝利[2] 马超[1] 刘丹[1] 蔡梦玲[1] 吴学民[1] 

机构地区：[1]中国农业大学应用化学系,农业部农药化学与应用重点开放实验室,北京100193 [2]中国农业科学院农业环境与可持续发展研究所,北京100081

出　　处：《分析化学》2011年第9期1437-1441,共5页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金(No.40671096);国家"十二五"科技支撑计划(No.2011BAE06B06)资助项目

摘　　要：采用X射线光电子能谱(XPS)研究了双梳型共聚物吸附于莠去津颗粒样品表面的电子状态,计算了吸附厚度。结果表明:吸附后,莠去津颗粒界面的N 1s和Cl 2p谱峰强度明显减弱,Cl 2s几乎消失,而C 1s和O 1s谱峰强度则明显增强,这主要是双梳型共聚物中C和O的贡献,且吸附后能在莠去津颗粒界面形成良好的吸附保护膜,其厚度约为15 nm。本研究拓宽了X射线光电子能谱仪的应用领域,且对莠去津悬浮剂的稳定机理研究有实际意义。The electron state of adsorption of double comb shape copolymer on the surface of atrazine particles was observed with X-ray photoelectron spectroscopy and the adsorption layer thickness was also calculated.After the adsorption,the absorption strength of N 1s and Cl 2p on the interface of atrazine particles decreased sharply and the absorption peak of Cl 2s almost diminished.Because of the contribution of C and O in the dispersant,the absorption strength of C 1s and O 1s on the interface increased.Moreover,the dispersant formed an adsorption membrane coating the atrazine particles thoroughly,whose thickness is 14.98 nm.This report expands the application field of X-ray photoelectron spectroscopy and it also plays significant role in the theory of atrazine suspension concentrate stability.

关 键 词：X射线光电子能谱 莠去津 双梳型共聚物 吸附 

分 类 号：TQ450.7[化学工程—农药化工] O657.62[理学—分析化学]