OFF-LINE AND ONLINE DETERMINATION OF FLUORIDE WITH UNSEGMENTED FLOW CONFIGURATIONS

被引：15

作者：

CHEN, DH ^{[1
]}

DECASTRO, MDL ^{[1
]}

VALCARCEL, M ^{[1
]}

机构：

[1] UNIV CORDOBA,FAC SCI,DEPT ANALYT CHEM,CORDOBA,SPAIN

来源：

ANALYTICA CHIMICA ACTA | 1990年 / 230卷 / 01期

关键词：

D O I：

10.1016/S0003-2670(00)82771-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Several flow-injection configurations for the fluorimetric determination of fluoride at the nanograms per millilitre level based on the formation of a ternary complex with zirconium(IV) and Calcein Blue were tested. A systematic study of instrumental and chemical variables was made in order to obtain the maximum differences in fluorescence between the binary and ternary complexes and to develop an automated off-line flow-injection method with interesting analytical features (linear range between 0.2 and 20.0 ng ml-1, relative standard deviation 0.2% and sampling frequency between 60 and 120 h-1). The method was successfully adapted for the on-line monitoring of fluoride using different approaches for calibration. © 1990.

引用

页码：137 / 143

页数：7

共 27 条

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[2] DETERMINATION OF FLUORIDE BY ATOMIC ABSORPTION SPECTROMETRY [J].