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目的检测不同包装食品中尼泊金酯类物质的迁移情况,建立液相色谱串联质谱法(LC/MS/MS)测定塑料包装材料中6种尼泊金酯类物质迁移量。方法水性模拟物(蒸馏水、3%乙酸溶液和10%乙醇溶液)过滤膜测定,橄榄油模拟物经固相萃取处理后过滤膜测定。结果该法在蒸馏水、3%乙酸溶液、10%乙醇溶液和橄榄油中的回收率分别为82.73%~127.85%、73.66%~95.71%、92.43%~113.00%、79.33%~108.64%,相对标准偏差分别为0.34%~1.63%、1.03%~4.02%、0.98%~3.53%、0.29%~2.39%,检测限分别为0.36μg/L~0.59μg/L、0.3μg/L~0.6μg/L、0.2μg/L~0.3μg/L、0.4μg/L~0.6μg/L。结论该法灵敏、准确,适用于塑料制品中6种尼泊金酯类物质迁移量检测。
Objective To detect the migration of paraben esters in different packaged foods and establish the liquid chromatography tandem mass spectrometry (LC / MS / MS) to determine the migration of six kinds of parabens in the plastic packaging materials. Methods The aqueous simulated products (distilled water, 3% acetic acid solution and 10% ethanol solution) were measured by filtration membrane. The olive oil simulants were filtered through solid phase extraction. Results The recoveries of this method in distilled water, 3% acetic acid solution, 10% ethanol solution and olive oil were 82.73% ~ 127.85%, 73.66% ~ 95.71%, 92.43% ~ 113.00%, 79.33% ~ 108.64% The deviations were 0.34% ~ 1.63%, 1.03% ~ 4.02%, 0.98% ~ 3.53%, 0.29% ~ 2.39% .The detection limits were 0.36μg / L ~ 0.59μg / L, 0.3μg / L ~ 0.6μg / L , 0.2μg / L ~ 0.3μg / L, 0.4μg / L ~ 0.6μg / L. Conclusion The method is sensitive and accurate and suitable for the detection of 6 kinds of migration of paraben esters in plastic products.