Article ID Journal Published Year Pages File Type
10552813 Journal of Food Composition and Analysis 2011 5 Pages PDF
Abstract
An ultrasensitive chemiluminescence (CL) method for determination of melamine at picogram level was reported in a flow system. It was found that melamine can accelerate the electrons transferring rate of excited 3-aminophthalate with notable enhanced CL intensity of luminol-hydrogen peroxide reaction. The increased CL intensity was proportional to the concentration of melamine in the range from 2.5 to 250 pg mL−1 (R2 = 0.9953), with a detection limit of 0.9 pg mL−1 (3σ) and the relative standard deviations lower than 5.0%. The proposed method was successfully applied to determine the melamine in liquid milk, yogurt, human urine and serum samples with the recovery of 98-105%, 93-105%, 98-105%, 97-109%, respectively.
Related Topics
Physical Sciences and Engineering Chemistry Analytical Chemistry
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