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Flow-injection determination of streptomycin residues in milk using the luminol–periodate–Mn2+ chemiluminescence system

✍ Scribed by Guo-Hui Wan; Hua Cui; Hai-Song Zheng; Yong-Qiang Pang; Li-Juan Liu; Xiao-Feng Yu

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
357 KB
Volume
21
Category
Article
ISSN
1522-7235

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✦ Synopsis

Abstract

A novel flow‐injection method with chemiluminescence detection was developed for the determination of streptomycin residues in milk, based on the enhancement by streptomycin of the luminol–potassium periodate–Mn^2+^ chemiluminescence system. The assay allowed analysis of streptomycin residues in whole milk samples (∼3.5% fat) after sample work‐up procedures. The limit of detection was 5.16 × 10^−9^ mol/L for milk, and was far below the regulations of maximum residue limits (MRLs). The relative standard deviation (RSD) for 8.66 × 10^−8^ mol/L streptomycin was 1.94% (n = 15) in milk. The results obtained for the assay of streptomycin residues in milk was comparable with those obtained by the official methods (ELISA) and demonstrated good accuracy and precision. The possible mechanism is briefly discussed. Copyright © 2005 John Wiley & Sons, Ltd.

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