Spectrophotometric determination of ascorbic acid in drugs employing binary sampling in flow system.

被引：0

作者：

Paim, APS ^{[1
]}

Kronka, EAM ^{[1
]}

Reis, BF ^{[1
]}

Korn, M ^{[1
]}

机构：

[1] Univ Sao Paulo, Ctr Energia Nucl Agr, BR-13400970 Piracicaba, SP, Brazil

来源：

QUIMICA NOVA | 1998年 / 21卷 / 01期

关键词：

ascorbic acid; flow analysis; binary sampling;

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A flow system procedure for spectrophotometric determination of ascorbic acid in drugs based on [Fe3+(SCN-)(n)](+3-n) complex decomposition by reduction is described. The flow network was constituted by a set of three-way solenoid valves, controlled by a microcomputer running a software wrote in QuickBasic 4.5 language. The feasibility of the procedure was ascertained by determining ascorbic acid in drug samples with mass ranging from 0.0018 up to 0.0180 g. The results showed an agreement of about 7% when compared with recommended method. Other profitable features such as a standard deviation of 1.5% (n = 7) and a throughput of 120 determinations per hour was also achieved.

引用

页码：47 / 50

页数：4

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