铜箔电解液中砷的测定  

Determination of arsenic in the electrolyte of copper foil

作　　者：贺晓唯[1] 陈永杰[1] 张石[1] 王贺[2] 赵志刚 

机构地区：[1]沈阳化工学院应用化学学院,辽宁沈阳110142 [2]中国科学院长春应用化学研究所,吉林长春130022 [3]锦化化工集团有限责任公司,辽宁葫芦岛125001

出　　处：《冶金分析》2004年第3期38-39,共2页Metallurgical Analysis

摘　　要：研究了乙基罗丹明B -砷钼杂多酸 -阿拉伯树胶显色体系 ,提出了测定痕量砷的高灵敏分光光度法。由于形成吸附性缔合物 ,表观摩尔吸光系数高达 3 3 2× 10 5。缔合物最大吸收位于 5 88nm ,本法用于铜箔电解液中痕量砷的测定 。According to investigation of a color reaction system of ethyl rhodamine B(ERB)-molybdoarsenic heteropoly acid-arabic gum,a high sensitive spectrophotometric method for the determination of trace arsenic was reported. The maximum absorption wavelength of the ionic associate was at 588 nm and its apparent molar absorptivity was found to be 3.32×10 5 L·mol -1·cm -1. Beer's law was obeyed in the range of 0 to 1.8 μg of As*% per 25 mL. The color of the aqueous solution was stable for 1 h at least. Trace arsenic in copper foil electrolyte could be determined by proposed method with satisfactory results.

关 键 词：铜箔电解液 砷 测定 乙基罗丹明B 钼杂多酸 阿拉伯树胶 分光光度法 

分 类 号：O657.32[理学—分析化学]