2013-2015年许昌市市售膨化食品中铝含量监测结果分析

Analysis of monitoring results of aluminum content in puffed food from Xuchang during 2013-2015

目的通过对许昌市2013-2015年食品安全风险的监测,了解许昌市市售膨化食品中铝的污染状况,为进行膨化食品中铝的安全风险评估及制定相应的管理方案提供依据。方法根据河南省食品污染物监测计划要求,选择许昌市超市、农贸市场及学校周边小商铺等作为监测点,随机采集膨化食品119份,用微波消解对样品进行消化处理,采用石墨炉原子吸收光谱法进行铝含量的检测。结果 2013-2015年3年共监测样品119份,铝的检出范围为1.45~266 mg/kg,总检出率为82.4%,超标率为6.7%,年间超标率比较差异无统计学意义(χ~2=3.21,P>0.05)。不同销售地点的样品超标率差异有统计学意义(χ~2=21.41,P<0.005);散装样品、简易包装样品比定型包装样品超标率高,超标率差异有统计学意义(χ~2=24.14,P<0.005)。结论许昌市市售膨化食品中存在一定的铝污染,监管部门应加强对膨化食品中含铝添加剂的使用并进行相应的技术指导和监管。

Objective According to the monitoring of food safety risk during 2013 -2015, to understand the pollution situ- ation of aluminum in puffed food in Xuchang, to provide evidence for evaluating safety risk of aluminum in puffed food and working out the corresponding management solution. Methods According to the monitoring plan for food pollutants of Henan province, 119 puffed food simples were collected from supermarkets, farmers＇ markets and small shops from school. The samples were digested by microwave digestion and aluminum content were tesed by graphite furnace atomic absorption spectrometry. Results A total of 119 samples were monitored in past three years, the detection range of aluminum were from 1.45 mg/kg to 266 mg/kg with detection rate of 82. 4% and over standard rate of 6. 7% , the over standard rate showed no statistically significant difference in different years （x2 = 3.21, P 〉 0. 005 ）. Statistically difference was found in over standard rate of aluminum contend different sales site （x2 =21.41 ,P 〈0. 005）. The over standard rate of bulk sam- ples and simple packaging sample was higher than that of packaging sample, which was found significant difference （x2 = 24. 14 ,P 〈 0. 005 ）. Conclusion There are aluminum pollution in puffed food from Xuchang, regulators should supervise the use of aluminum of additives in puffed food on the corresponding technical guidance.