摘要
本文研究了以二(2-乙基已基)磷酸(P204)为流动载体。双丁二酰亚胺(蓝-113B)为表面活性剂,煤油为膜溶剂的液膜体系富集水溶液中痕量铅。选择H_2SO_4及硫脲为内相试剂,解析配合被P204迁移的Pb^(2+)。本法选择性好,回收率可达99%,十次间歇富集倍数可达10~2倍。
The liquid membrane method, as a new and highly effective separation technique, has been widely used and investigated in many fields. In this paper, the new liquid membrane system of P204-Blue-113B-liquid paraffin kerosene sulphuric acid and thiourea used to enrich trace lead in water. The best conditions for enrichment and influencing factors were studied. Combined with flame atomic absorption spectrophotometrya recovery of more than 99 percent was obtained Lead in water can be enriched up to 102 fold. According to the experiments liquid membrane enrichment mehtod is very effective and promising in the field of analytical chemistry.
出处
《分析试验室》
CAS
CSCD
北大核心
1991年第1期32-34,共3页
Chinese Journal of Analysis Laboratory
基金
国家自然科学基金
关键词
液膜法
富集
铅
分光光度法
煤油
P204, Blue-113B, Kerosen, thiourea Liquid membrane enrichment, lead.