一次性塑料餐具中尼泊金酯迁移量的测定  

The Determination of the Migration of Parabens in Disposable Plastic Tableware

作　　者：韩新宁 李继凯 白晓朝 曹江平 解启龙[2] 王超越 李洋洋 苏哈尔•胡安别克 叶正峰 李金花 HAN Xinning;LI Jikai;BAI Xiaochao;CAO Jiangping;XIE Qilong(Engineering and Technology Research Center of Liupanshan Resources,College of Chemistry and Chemical Engineering,Ningxia Normal University,Guyuan Ningxia 756000,China;State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan Shanxi 030001,China)

机构地区：[1]宁夏师范学院化学化工学院,六盘山资源工程技术研究中心,宁夏固原756000 [2]中国科学院山西煤炭化学研究所煤转化国家重点实验室,山西太原030001 [3]不详

出　　处：《江西师范大学学报（自然科学版）》2021年第4期438-440,F0003,共4页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：宁夏自然科学基金(2020AAC03268);固原市科技计划(2020GYKYF005,2020GYKYF011);固原市人才课题(六盘山区中药材资源开发利用创新团队建设);宁夏重点研发计划(科技支撑)课题(2019BEG03071);宁夏师范学院校级科研课题(NXSFZDB2111)资助项目。

摘　　要：该文建立了RP-HPLC法快速测定一次性塑料餐具中尼泊金甲酯、尼泊金乙酯、尼泊金丙酯、尼泊金丁酯和尼泊金异辛酯迁移量的方法.优化了色谱分离和分析条件,采用Diamonsil C_(18)(150 mm×4.6 mm×5μm)色谱柱分离,用甲醇-水体系梯度洗脱,检测波长为254 nm,流速为1.0 mL·min^(-1),柱温为30℃.该方法的线性范围为5~1000 ng·mL^(-1)(R>0.99),检出限为0.37~0.52 ng·mL^(-1),重现性良好,日内及日间重复测定的相对标准偏差分别为4.0%~5.3%、4.3%~7.5%.该方法成功应用于塑料杯、塑料碗、塑料盘等一次性塑料餐具中5种尼泊金酯迁移量的测定.A rapid method for the simultaneous determination of the migration of methylparaben(MP),ethylparaben(EP),propylparaben(PP),butylparaben(BP)and octylparaben(OP)in disposable plastic tableware is developed by RP-HPLC.The chromatographic separation and analysis conditions are optimized.The separation is performed on a Diamonsil C18(150 mm×4.6 mm×5μm)column with a gradient elution system of methanol-water.The detection wavelength is set at 254 nm,the flow rate is 1.0 mL·min-1,and the column temperature is 30℃.The linear range of this method is 5—100 ng·mL^(-1)(R>0.99),the detection limit is 0.37—0.52 ng·mL^(-1),and the reproducibility is satisfactory.The relative standard deviations(RSDs)of intra-day and intra-day are 4.0%—5.3%and 4.3%—7.5%,respectively.The method is successfully applied to the determination of migration of five parabens in disposable plastic tableware such as plastic cup,bowl and plate.

关 键 词：一次性塑料餐具 尼泊金酯 迁移量 

分 类 号：O657[理学—分析化学]