Abstract
A new analytical method is proposed for simultaneous determination of twenty organic acids in juices and beverages by eluent generator reagent free ion chromatography with electrospray ionization mass spectrometry (ESI–MS) in the negative selected ion monitoring mode (SIM). Twenty organic acids showed good linear relationship in the ranges of 0.5 ∼ 20.0 mg/L. The correlation coefficients were more than 0.998, the detection limits were between 0.05 ∼ 0.5 mg/L, and the average recoveries were between 88.0% ∼ 106.0%. The relative standard deviations (RSDs) were less than 7.6%. The method has been applied to juice and beverage samples with satisfactory results.
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