摘要
十二烷基二甲基苯甲基氯化铵、十二烷基磺酸钠和溴百里酚蓝在pH 7.4～ 8.2范围内形成黄绿色离子缔合物。把十二烷基磺酸钠、溴百里酚蓝、缓冲溶液按顺序加入十二烷基二甲基苯甲基氯化铵中 ,15min后于 45 6nm处测其吸光度 ,微量测定十二烷基二甲基苯甲基氯化铵的含量。通过调节pH值、加入掩蔽剂掩蔽金属离子排除干扰。
Dodecyl dimethyl benzyl-ammonium chloride, sodium laurylsulfonate and bromothymol blue can form yellowish blue ion association complex in pH 7.4～8.2, affix sodium laurylsulfonate, bromothymol blue and buffer solution to dodecyl dimethyl benzyl-ammonium chloride in normal sequence. Record the absorbance data of solution in 456nm with spectrophotometer, micro-determine the content of dodecyl dimethyl benzyl-ammonium chloride. The disturbance was removed by adjusting the pH value and adding the screening agent to mask the metalion.
出处
《南京化工大学学报》
2001年第1期60-63,共4页
Journal of Nanjing University of Chemical Technology(Natural Science Edition)
