摘要
提出加入柠檬酸钠以掩蔽水体中Ca2+对锰(Ⅱ)测定产生的干扰,改进国家标准GB/T 11906-1989中高碘酸钾分光光度法测定水中锰(Ⅱ)的方法.结果表明:所建立方法的线性范围为0.20～20.00mg.L-1,相关系数R2为0.999 3,检出限为0.05mg.L-1,标准加入回收率为95.8%～101.4%,相对标准偏差(RSD)为0.15%～2.47%(n=3).
Determination of manganese in water was improved based on the potassium periodate oxidation spectrophotometric method（GB/T 11906-1989）,in which the sodium citrate was added to mask Ca2＋ in water.A linear range of 0.20～20.00 mg·L-1 with good correlation coefficient（R2=0.999 3） was obtained for manganese determination,and the detection limit of this method was 0.05 mg·L-1.The recoveries were in the range of 95.8%～101.4% and the RSD was less than 2.47%（n=3）.
出处
《华侨大学学报（自然科学版）》
CAS
北大核心
2012年第2期176-178,共3页
Journal of Huaqiao University(Natural Science)
基金
福建省厦门市科技计划项目(3502Z20103034)
关键词
锰(Ⅱ)
高碘酸钾
分光光度法
柠檬酸钠
钙离子
manganese （ Ⅱ ）
potassium periodate
spectrophotometric method
sodium citrate
calcium ions
