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机构地区:[1]常州大学石油化工学院,江苏常州213022 [2]常州出入境检验检疫局,江苏常州213022 [3]常州进出口工作及消费品安全检测中心,江苏常州213022
出 处:《中外食品工业(下)》2014年第5期35-36,52,共3页Sino-foreign Food Industry
基 金:国家质量监督检验检疫总局科技计划(2012IK070).
摘 要:建立了采用高效液相色谱法测定食品接触材料在水性模拟物中1,4-二氯苯迁移量的方法。采用水、3%乙酸(w/v)、4%乙酸(v/v)10%乙醇(v/v)、20%乙醇(v/v)以及50%乙醇(v/v)六种不同水性模拟物对食品接触材料进行浸泡后,以Agilent SB-C18作为分析柱,采用UV检测器(检测波长为223 nm),以甲醇/水(体积比70/30)为流动相,进行定量分析。结果表明在6种不同水性模拟物中,1,4-二氯苯在0.10 mg/L-25.00 mg/L浓度范围内线性关系均良好(r≥0.9998),最低检测限(S/N=3)可达0.05 mg/L。同时对低、中、高3个添加水平下进行加标回收实验,1,4-二氯苯的平均回收率为89.0%-105.0%,相对标准偏差(n=6)为0.88%-7.91%。本方法简单、快捷、准确,完全能够满足食品接触材料的日常检验要求。Object:To develop a method for the determination of 1,4-dichlorobenzene p-dichlorobenzene in aqueous food simulants of food contact materials by using high-performance liquid chromatography. Methods:The samples were extracted by distilled water, 3%(w/v) acetic acid aqueous solution, 4%(v/v) acetic acid aqueous solution, 10%(v/v) ethanol aqueous solution, 20%(v/v) ethanol aqueous solution and 50%(v/v) ethanol aqueous solution. The extract was separated on a Agilent SB-C18 analytical column with a mixture of methanol-water(70/30 by volume) as the mobile phase, and detected on the ultraviolet detector at a wavelength of 223 nm. Results:The limit of detection(S/N=3) for 1,4-dichlorobenzene p-dichlorobenzene in six aqueous food simulants was up to 0.05 mg/L with a good linear correlation (r≥0.9998) in the range of 0.10 mg/L-25.0 mg/L. The mean recovery of the compound at three different spiked levels were 89.0%-105.0%, with the relative standard deviation (n=6) of 0.88%-7.91%. Conclusion:This method is simple, rapid and accurate. Besides, it can satisfy the inspection of 1,4-dichlorobenzene p-dichlorobenzene in food contact materials.
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