摘要
建立了测定重整原料油中砷含量的罗丹明B-砷钼杂多酸-聚乙烯醇(PVA)显色体系的分光光度方法。该法具有灵敏度高、选择性好及体系稳定性好的特点,显色反应的pH值为1～3,最大吸收波长是592nm。该法所需时间是传统萃取法的1/2～1/3,而且不产生剧毒气体AsH_3。
A method for determing trace amounts of arsenic in reformate is proposed. It is to use spectrophotometry of rhodamine B-heteropoly arsenomolybdic acid-polyvinyl alcohol as the color developing system. It has excellent sensitivity,selectivity and stability. The ternary complex and polyvinyl alcohol are at pH 1-3. and the maximum absorption wave of the complex compound is 592 nm. Time needed by this method is l/2~ 1/3 of that of conventionl extraction spectropohotometry,and the coloring reaction used here dose not form toxic AsH3.
出处
《北京石油化工学院学报》
1999年第2期38-42,共5页
Journal of Beijing Institute of Petrochemical Technology
关键词
分光光度法
重整油
砷
spectrophotometry
ref ormate
arsenic
