三氯偶氮胂与稀土元素显色反应的研究(Ⅰ)——直接光度法测定水中痕量稀土

高等学校化学学报 ›› 1985, Vol. 6 ›› Issue (5): 397.

三氯偶氮胂与稀土元素显色反应的研究(Ⅰ)——直接光度法测定水中痕量稀土

陈丹华, 蔡汝秀, 余席茂, 曾云鹗

武汉大学化学系

收稿日期:1983-11-23 出版日期:1985-05-24 发布日期:1985-05-24
基金资助:
中国科学院科学基金

Study on the Color Reaction of Trichloroarsenazo with Rare Earth (Ⅰ) --Direct Determination of Trace Rare Earth in Tap Water

Chen Danhua, Cai Ruxiu, Yu Ximao, Zeng Yun'e

Chemistry Jiepartment of Wuhan University, Wuhan

Received:1983-11-23 Online:1985-05-24 Published:1985-05-24

摘要/Abstract

摘要： 本文对新显色剂三氯偶氮胂与稀土元素的显色反应进行了研究.该试剂灵敏度高,选择性好.用直接光度法测定水中痕量稀土,取得了满意的结果.

Abstract: The color reaction of trichloroarscnazo (TCA) (2-(2-arsonophcnylazo)-7-(2, 4,6-trichlorophcnylazo)-1,8-dihydroxy-3,6-disulfonaphthalcne) with rare earth has been studied in this paper.TCAwas found to have high sensitivity to Cerium group rare earth ε = 1.079-1.308×10⁵ and to the amount of rare earths ε = 0.937-1.329×10⁵), big comparison degree (Δλ = 93-104nm), and good selectivity. Large amounts of Ca (10mg), Mg(8mg), Al (60mg) do not interfere with the determination. It is one of the best selective reagents for rare earths up to now.

TrendMD:

陈丹华, 蔡汝秀, 余席茂, 曾云鹗. 三氯偶氮胂与稀土元素显色反应的研究(Ⅰ)——直接光度法测定水中痕量稀土. 高等学校化学学报, 1985, 6(5): 397.

Chen Danhua, Cai Ruxiu, Yu Ximao, Zeng Yun'e . Study on the Color Reaction of Trichloroarsenazo with Rare Earth (Ⅰ) --Direct Determination of Trace Rare Earth in Tap Water. Chem. J. Chinese Universities, 1985, 6(5): 397.