砷钼蓝法测定某含金多金属矿碱浸液中砷的含量及其价态  

Determination of Arsenic and Its Valence in Alkali Leaching Liquid of a Gold Containing Polymetallic Ore by Arseno-molybdenum Blue Method

作　　者：陈殿耿 肖一然 李文莉 李云 CHEN Diangeng;XIAO Yiran;LI Wenli;LI Yun(BGRIMM MTC Testing Technical Co.,Ltd.,Beijing 102628,China;Middle School Attached To Beijing Medical University,Beijing 100083,China;BGRIMM Technology Group,Beijing 102628,China)

机构地区：[1]北矿检测技术有限公司,北京102628 [2]北京矿冶科技集团有限公司,北京102628 [3]北京医学院附属中学,北京100083

出　　处：《中国无机分析化学》2019年第1期14-16,共3页Chinese Journal of Inorganic Analytical Chemistry

摘　　要：在硫酸介质和沸水浴中,As(Ⅴ)与钼酸铵作用,被抗坏血酸还原生成砷钼蓝络合物,而As(Ⅲ)在同样条件下则不显色,通过研究砷的价态、共存元素及温度对测定砷结果影响的讨论,在波长620nm处测定溶液的吸光度,从而建立了砷钼蓝法测定某含金多金属矿碱浸液中砷含量及其价态的分析方法。实验表明,测定结果的相对标准偏差为0.86%～1.2%,加标回收率为96.8%～98.5%,测定结果对冶金工艺设计有一定的指导意义。In H 2SO4 and boiling waterbath,As(Ⅴ)contacts with ammonium molybdate,followed by treatment with ascorbic acid to form arseno-molybdate blue complex,in the same condition,the color reaction of As(Ⅲ)with ammonium molybdate is almost not found.Thus the absorbance of the solution can be measured at wavelength of 620 nm.A method has been established for the determination of arsenic and its valence in alkali leaching liquid of a gold containing polymetallic ore by arseno-molybdenum blue method.The results have active guidance meaning to the design of process metallurgy.

关 键 词：砷 As(Ⅴ) As(Ⅲ) 砷钼蓝法 含金多金属矿 碱浸液 

分 类 号：O657.32[理学—分析化学] TH744.12[理学—化学]