摘要
研究了以己二酰异羟肟酸作新型显色剂，分光光度法测定了微量钼，该显色剂在ｐＨ为１．４～２．２条件下与钼（Ⅵ）生成黄色络合物，λｍａｘ为４２０ｎｍ，ε４２０为３．２×１０３Ｌ·ｍｏｌ－１·ｃｍ－１，钼含量在１～１３８μｇ·ｍＬ－１范围内符合比尔定律。此外还研究了该络合物组成及共存离子的影响，是一种简便的测定微量钼的方法。
The spectrophotometric determination of micro amounts of molybdenum(Ⅵ) with adipichydroxamic acid (A new coloration reagent) has been studied. The adipichydroxamic acid reacts with molybdenum(Ⅵ) in pH 1.4～2.2 hydrochloric acid medium to form yellow complex.The maximum adsorption is at 420 nm. The molar adsorptivity is 3.2×103 L·mol-1·cm-1.Berr's law is obeyed within the concentration range of 1.0～138 μg·mL-1.The effects of foreign ions on the determination of molybdenum(Ⅵ) have been described. The molar ratio of complex has been established. It is a highly sensitive,simple method for the determination of micro amounts of molybdenum(Ⅵ).
出处
《江西科学》
1998年第2期132-135,共4页
Jiangxi Science
关键词
异羟肟酸
分光光度法
测定
钼
Hydroxamic acid, Spectrophotometry, Determination, Molybdenum
