摘要
以次亚磷酸钠还原磷钼酸为指示反应催化光度法测定金具有很高的灵敏度。本文研究了加入有机溶剂(DMF)使其灵敏度进一步提高及反应介质中各种试剂的适宜浓度。当应用20％(V/V)DMF时灵敏度较水相中提高～50％。已用本法对两种矿样进行了分析,得到了满意的结果。
The determination of gold by catalytic photometry using phosphomolybdic acid reduced with NaH_2PO_2 as indicator reaction has high-sensitivity. Improving further the sensitivity by adding organic solvent DMF and optimum concentration of various reagents in reactive medium has been studied. The sensitivity is raised about 50％ when 20％(V/V)DMF is added in an aqueous solution. The method was used to analyze two ore samples and satisfactory result was obtained.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1989年第10期925-927,共3页
Chinese Journal of Analytical Chemistry
关键词
催化光度法
有机溶剂
金
DMF
Catalytic photometry
Gold
Dimethyltormide(DMF)
