SELECTIVE SPECTROFLUOROMETRIC DETERMINATION OF ZINC IN BIOLOGICAL SAMPLES BY FLOW-INJECTION ANALYSIS (FIA)

被引：10
|
作者：
FERNANDEZ, P [1 ]
CONDE, CP [1 ]
GUTIERREZ, A [1 ]
CAMARA, C [1 ]
机构：
[1] UNIV COMPLUTENSE MADRID,FAC CIENCIAS QUIM,DEPT QUIM ANALIT,E-28040 MADRID,SPAIN
来源：
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY | 1992年 / 342卷 / 07期
关键词：
D O I：
10.1007/BF00321920
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The automatization of a spectrofluorimetric method for the determination of zinc at trace level is described. It is based on the formation of the fluorescent complex Zn(II)-5,7-dibromo-8-quinolinol [Zn(II)-DBQ] followed by extraction into diethylether using flow injection analysis. The optimum fluorescent emission is reached in hexamethylenetetramine (H-2MTA+/HMTA) buffer pH 6.0. A membrane phase separator was used. The calibration graph is linear up to 1.5-mu-g/ml of Zn(II). The proposed method (detection limit 3 ng/ml) is very selective and has been successfully applied to determine Zn(II) in biological samples, tap waters and various food items.
引用
收藏
页码：597 / 600
页数：4
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