摘要
在ＨＣＩＯ４－Ｈ２ＳＯ４介质中，用ＳｎＣｌ２还原因，在ＳＣＮ－存在下，利用ＴＯＡ·ＨＡ第三液相萃取，形成ＴＯＡ·有色缔合物，最大吸收波长４７０ｎｍ，表观摩尔吸光系数钼含量在范围内遵守比尔定律，本法用于钢铁中痕量钼的测定，具有较高的灵敏度和准确度。
An extractive spectrophotometric method for the determination of trace amounts of molybdenum in hydrochloric acid and sulphuric acid media has been developed using ammonium thiocyanate and tin dichloride. The complex can be extracted into TOA HA third phase as TOA.H[Mo0(SCN)]which has a molar absorptivity of 1.63x104L.mol-1.cm-1 at470nm Beer's law is obeyed for 0-60μg of molybdenum in 5ml of solution The method has been applied to the determination of trace amounts of molybdenum in iron and steel with good precision and accuracy
出处
《冶金分析》
EI
CAS
CSCD
北大核心
1998年第1期16-18,共3页
Metallurgical Analysis
