FLOW-INJECTION ANALYSIS OF SULFATE WITH A POTENTIOMETRY-BASED LINEAR CALIBRATION GRAPH

被引：7
|
作者：
TANG, TC
HUANG, HJ
机构：
[1] NATL SUN YAT SEN UNIV,DEPT CHEM,KAOHSIUNG 80424,TAIWAN
[2] CHIA NAN JR COLL PHARM,DEPT IND SAFETY & HYG,TAINAN 71710,TAIWAN
来源：
ANALYTICAL CHEMISTRY | 1995年 / 67卷 / 13期
关键词：
D O I：
10.1021/ac00109a061
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Based on the behavior of lead ion selective electrode (Pb ISE) and the interaction between a sulfate-containing solution and solid lead sulfate, equations describing the explicit linear relationships between the measured potential of Pb ISE and the sulfate concentration in sample solutions were derived and applied to the determination of sulfate by the now injection analysis technique. These proposed procedures improved the sensitivity of the potentiometric method and the reliability of the analytical results. With a mixed solvent system (35 vol % methanol) a detection limit as low as 1.0 x 10(-6) M can be obtained optimistically.
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页码：2299 / 2303
页数：5
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