摘要
针对氯化亚锡-氯化汞-重铬酸钾法测定铁的含量时,汞对环境有污染问题,文章采用隔绝空气的方法用铝还原三价铁,在盐酸介质中用重铬酸钾标准滴定溶液滴定二价铁。方法精密度(RSD,n=5)低于1%,用于硫铁矿中铁的测定,结果可靠。
： In view of the environmental pollution from mercury in determination of iron by means of stannous chloride-mercury chloride-potassium dichromate titration, a new method without use of mercury reagent is proposed in this paper. By cutting off air, aluminium tablet is used to reduce ferric to ferrous and then ferrous is determined by potassium dichromate titrimetry. The method is reliable with precision of 0.61% RSD（ n =5） and suitable for the determination of iron in pyrites.
出处
《岩矿测试》
CAS
CSCD
北大核心
2009年第2期197-198,共2页
Rock and Mineral Analysis
关键词
铝片还原
重铬酸钾滴定法
铁
硫铁矿
aluminium tablet reduction
potassium dichromate titrimetry
iron
pyrite
