MAE-GC/MS法测定食品中B(α)P

doi:10.3969/j.issn.1673-1689.2014.12.016

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MAE-GC/MS法测定食品中B(α)P
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                        10.3969/j.issn.1673-1689.2014.12.016
                    
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MAE-GC/MS Determination Foods B (α) P Content

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摘要:

建立了测定食品中苯并芘(B(α)P)含量的MAE-GC/MS法。样品经微波辅助萃取技术前处理, DB-5MS弹性石英毛细管柱(30 m×0.25 mm×0.25 μm)分离, 以B(α)P m/z＝252为选择离子, 串连四极杆选择离子检测模式检测, 再以9-苯基蒽为内标, 采用内标法定量。结果显示, B(α)P的检出限为0.01 μg/kg, 标准曲线线性范围为0~10 μg/mL, 相关系数为1.000, 方法回收率达97%~103％; 精密度良好：日内RSD＜0.5%, 日间RSD＜1%; 准确度良好：以阴性样品为基底物质, 在0.1 mL甲醇苯并芘成分分析国家标准物质(GBW08702)的加标水平上, 测定值在其标准值范围内。表明：该法前处理简单, 回收率高, 检出限、线性范围、准确度、精密度结果均满足要求, 可用于测定食品中的B(α)P含量。

Abstract:

The aim of this study is to develop MAE-GC/MS method to determine the Benzo(α) pyrene (B(α)P) content. For this, the sample was pre-treatment by MAE(microwave-assisted extraction technology)and then separate by, DB-5MS fused silica capillary column(30 m×0.25 mm×0.25 μm) with B(α)P m/z=252 asthe selected ion, the detection is the series four quadrupole selected ion monitoring(SIM) mode with 9-phenyl anthracene as internal standard. A series of results were achieved： B(α)P detection limit was 0.01 μg/kg and the standard curve was linear at the range of 0~10 μg/mL. The correlation coefficient was 1.000, with the recoveries of 97%~103% and good precision: Days RSD/%<0.5%, day RSD/%<1%. The good accuracy, the negative sample as the base material, containing 0.1 mL methanol and benzo (α) pyrene national standard component analysis (GBW08702) spiked levels, the measured values within the standard value range. Based on the above results, conclusion could be arrived: the method is simple, high recovery, detection limit, linear range, accuracy, precision results meet the requirements for the determination of food in B(α)P content.

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蓝长波. MAE-GC/MS法测定食品中B(α)P[J].食品与生物技术学报,2014,33(12):1332-1237.

LAN Changbo. MAE-GC/MS Determination Foods B (α) P Content[J]. Journal of Food Science and Biotechnology,2014,33(12):1332-1237.

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在线发布日期: 2014-12-19
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