HPLC法测定饮用水PET包装瓶中对苯二甲酸和间苯二甲酸迁移量

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中图分类号：0657.72 文献标志码：A 文章编号：1674-0270（2025）32-0075-03

Determination of Migration Amounts of Terephthalic Acid and Isophthalic Acid in Drinking Water PET Packaging Bottlesby HPLC

XUXiaohong，LI Yichun，LI Tiaoyan （Guangdong Province JieyangCity QualityMeasurementSupervisionandTesting Institute，Jieyang 522Ooo，China）

Abstract：This article establishes an eficientand accurate high-performanceliquidchromatography（HPLC）analysis forthe simultaneous determinationof the specific migration amountsof terephthalicacid （TPA）and isophthalic acid （IPA）fromPETpackaging botles intodrinking water，andthedeterminationandanalysisofPETpackaging bottlesof 6diffrentbrands ofdrinking wateron the market.Theresults show thatTPAand IPA have good linearity inrangeof 0.5mg/L to 12.0mg/L ，the limit of detectionis O.2 mg/L，the spiked recoveries arebetween 92.2% and 104.5% ，and the relativestandard deviations are between 0.26% and 1.56% （ <5.0% ）.Themethodis simple to operate，highlyaccurate， andreproducible，and is suitable for the rapid determinationof specific migrationamounts ofTPAand IPA in PET packaging botles，and providesareliable means forfoodsafetyriskassessment.Thetestresults showthatTPAand IPA are not detected in anyof the packaging botle samples，indicatingthatthe polymerization degreeof PETpackaging bottles fordrinking wateron the marketis high，and therisksof monomerresidueand migration arecontrollable.

KeyWords：high-performance liquidchromatography;PETpackagingbottles;terephthalicacid;isophthalicacid; specific migration amounts

聚对苯二甲酸乙二醇酯（PET）作为全球范围内应用极为广泛的食品包装材料之一，涉及饮用水、碳酸饮料等液态食品的灌装包装。（剩余3123字）