摘要
为了防止过氧化氢对色谱分离柱产生损害,通常要用铂加入法进行过氧化氢自催化处理后才能测定溶液中的阴离子含量.但这种前处理方法既费时,加热过程也带来一定的污染.本文采用铂催化、电解作用相结合的样品前处理方法和离子色谱法,测定过氧化氢中F-,Cl-,NO3-,SO42-,PO43-等阴离子,所测各离子的线性关系、相对标准偏差较好,检测限分别为0.12,5.12,1.34,0.39,3.49μg/L.该方法可以应用于电子级过氧化氢的测定.测定结果令人满意.
In the previous report, the sample was pretreated with Pt to avoid reaction of H_2O_2 with the resin. But the time-consuming pretreatment with Pt may cause contaminations and lead to degradation of stabilizer because of the heat generated during the treatment. This paper presents a reproducible platinum-decomposition and electrolysis approach that uses ion chromatography to quantify the various anions (fluoride, chloride, nitrate, sulfate and phosphate). Detection limits(S/N=3) of F^-,Cl^-, NO_3^-, SO_4^(2-), PO_4^(3-) are 0.12,5.12,1.34,0.39 and 3.49 μg/L, respectively. Consequently, The method can be applied to the determination of trace anionic impurities in electronical grade hydrogen peroxide. The H_2O_2 samples were analyzed by ion chromatography and the results of both methods were compared.
出处
《浙江大学学报（理学版）》
CAS
CSCD
2004年第2期184-187,共4页
Journal of Zhejiang University（Science Edition）
基金
国家自然科学基金资助项目(20375035)
浙江省自然科学基金及分析测试基金资助项目.
