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Flow Injection Chemiluminescence Determination of Isoniazid Using On-Line Electrogenerated Manganese(III) as Oxidant

✍ Scribed by Baoxin Li; Zhujun Zhang; Xingwang Zheng; Chunli Xu

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
45 KB
Volume
63
Category
Article
ISSN
0026-265X

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✦ Synopsis

A novel flow injection chemiluminescence (CL) system for the determination of isoniazid has been proposed. It is based on the direct CL reaction of isoniazid and Mn(III) in sulfuric acid medium. The unstable Mn(III) was on-line electrogenerated by constant current electrolysis. The CL emission intensity was linear with isoniazid concentration in the range 0.1-10 g/mL; the detection limit was 3.2 ϫ 10 Ϫ2 g/mL. The whole process could be completed in 1 min with a relative standard deviation of less than 5%. The proposed method is suitable for automatic and continuous analysis and has been applied successfully to the analysis of isoniazid in pharmaceutical preparation.

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