摘要
研究在溴化十六烷基三甲铵及阿拉伯胶存在下 ,钯与结晶紫的显色反应。研究结果表明 ,在 pH =4.4～ 4.8时 ,体系的多元络合物最大吸收波长为λmax=62 0nm ,摩尔吸收系数为ε62 0=1 .3× 1 0 5L/mol·cm。钯含量在 0～ 5 .0 μg/mL范围内符合比耳定律。此方法快速、简便 ,灵敏度、回收率较高。拟定的方法用于钯金催化剂样品中钯含量的测定 。
In the presence of CTMAB,a colour reaction of Pd(Ⅱ) with crystal violet has been studied.In an acetate buffer medium(pH=4.6),the complex has an absorption maximum at 620 nm.The molar absorptivity is ε 620 =1.3×10 5 L/mol·cm.Beer's law is obeyed in the range of 0～5.0 μg/mL for Pd(Ⅱ).The method has been applied to determine the content of Pd in the catalyst with satisfactory results.
出处
《上海应用技术学院学报（自然科学版）》
2003年第2期146-148,共3页
Journal of Shanghai Institute of Technology: Natural Science
关键词
钯
结晶紫
溴化十六烷基三甲铵
分光光度分析
显色反应
palladium
crystal violet
cetyltrimethyl-ammonium bromide
spectrophotometry analysis
