EXTRACTIVE SPECTROPHOTOMETRIC DETERMINATION OF NIOBIUM(V) WITH THIOCYANATE AND AMIDES

被引：4
|
作者：
PATEL, KS [1 ]
DAS, M [1 ]
机构：
[1] GIRLS COLL,DEPT CHEM,BHILAI,MADHYA PRADESH,INDIA
来源：
ANALYTICAL LETTERS | 1991年 / 24卷 / 07期
关键词：
NIOBIUM(V) DETERMINATION; EXTRACTION; SPECTROPHOTOMETRY; THIOCYANATE; AMIDES;
D O I：
10.1080/00032719108052968
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
A new procedure for extractive spectrophotometric determination of niobium(V) with thiocyanate and 10 amides (derived from condensation of aceticanhydride with amines) is described. The value of molar absorptivity of the complexes in benzene lie in the range of (3.10 - 4.20) x 10(4) 1 mole-1 cm-1 at absorption maximum 395 - 400 nm. Among these, the most sensitive compound, N-octylacetamide has been chosen for the detailed studies. The limit for detection is 0.01-mu-g Nb/ml of the aqueous solution. The effect of various analytical variables on the determination of the metal has been examined. The method is simple, rapid and being free from interferences of almost all metal ions except Mo. Its application for the analysis of the metal to ore, slag, steel and water has been tested.
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页码：1273 / 1282
页数：10
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