Citation: Hui CHANG, Jian Nan YANG. FLOW INJECTION SPECTROPHOTOMETRIC DETERMINATION OF VITAMIN B₁ AND VITAMIN B₂ IN MULTIVITAMIN[J]. Chinese Chemical Letters, ;1995, 6(8): 705-706. shu

FLOW INJECTION SPECTROPHOTOMETRIC DETERMINATION OF VITAMIN B₁ AND VITAMIN B₂ IN MULTIVITAMIN

Hui CHANG ^a ,
Jian Nan YANG ^b

a Petrochemistry Department, Fushun Petroleum Institute, Fushun 113001;
b Chemistry Department, Liaoning University, Shenyang 110036

Received Date: 8 June 1994

Vitamin B₁ reacts with diazo-aminobenzene sulfonic acid to form a red complex in a basic medium and there is absorption of vitamin B₂ at 440 nm.A flow injection spectrophotometric determination of the two medicaments is described based on these characteristics.The method was simple and had a high selectivity and sampling rate of 60 h^-1 The dynamic linear ranges were 0-100μg ml^-1 of vitamin B₁ and 0-80μg ml^-1 of vitamin B₂, respectively.The relative standard deviation was 0.2881% (n=10) for vitamin B₁.
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