2007—2009年重庆地区出口罐头重金属污染情况分析

Analysis on the Status of Heavy Metal Contamination in Export Canned Food in Chongqing in 2007-2009

目的为将来针对性开展重庆地区出口罐头食品重金属污染监控提供科学依据。方法对2007年到2009年出口罐头食品重金属污染监控数据进行统计、归类和分析。结果 2007年出口罐头监控重金属项目为铅、总砷、无机砷、总汞、镉、锌及锡,部分样品铅及总汞含量超过标准限值,65个样品中有5个样品铅含量超标,样品铅含量合格率92.3%(60/65),而在60个样品中,有9个样品总汞含量超标,样品总汞含量合格率为85.0%(51/60),样品的其余5种重金属含量均在标准范围之内;2008年出口罐头监控重金属项目与2007年相同,所有监控重金属的含量均在标准限值之内,样品合格率均为100%;2009年出口罐头监控项目取消了锌和锡,增加了锑和铬,样品各项重金属含量均在标准限值范围之内,样品整体合格率100%。结论重庆地区出口罐头重金属含量整体合格率较高,重金属含量超过限量值的风险较小,但是部分重金属,如铅和总汞需重点关注。

Objective To provide scientific basis for monitoring targeted heavy metals in Chongqing. Method The data on heavy metal contamination in export canned food were collected from 2007 to 2009 in Chongqing and analysed for classification and statistics. Results Seven kinds of heavy metals were monitored in 2007,including lead （ Pb）,total mercury （total Hg）,total arsenic （total As）,inorganic arsenic （inorganic As）,cadmium （Cd）,zinc （Zn） as well as tin （Sn）. The contents of lead in 5 of 65 samples and the contents of total mercury in 9 of 60 samples were more than the upper limits. Total arsenic,inorganic arsenic,cadmium,zinc as well as tin in all samples were qualified. The same kinds of heavy metals were monitored in 2008,and the content of these heavy metals in all samples was in the range of standard level and qualified. Zn and Sn were removed from and chromium （ Cr） and stibium （ Sb） were added in the monitoring list in 2009. All samples were qualified for targeted heavy metals monitored in 2009. Conclusion The qualification of heavy metals in export canned food in Chongqing was good and the probability of exceeding standard level is small,while more attention should be paid on certain metals such as lead.