论文部分内容阅读
目的对广西9类食品进行抽样检测,以了解本地主要食品中铅的污染状况。方法采用随机抽样的方法,在全区14个地市的城区及所辖部分县(区),对大米、猪肉、猪内脏、水产品、婴幼儿食品、藻类、烘焙食品、乳粉、蔬菜等9类食品进行采样调查,检测分析铅含量。结果全年共采集样品1649份,总超标率3.09%(51/1649);其中藻类的超标情况最为严重(16.67%),其次为猪肉及蔬菜,各样品超标率间差异具有统计学意义(χ2=22.84,P<0.05);城区与农村的相较差异无统计学意义(χ2=0.07,P=0.795);以产地而言,本次监测中本地产食品的超标率较高,进一步比较了本地产食品的区域分布,发现超标样品主要集中在桂西、桂北部地区,各区域超标率间差异有统计学意义(χ2=9.49,P<0.05)。结论 2012年广西食品中铅污染总体状况较轻,但个别食品如藻类的超标率较高,应加强环境中铅污染的治理整治工作,以保障餐桌食品的安全。
Objective To sample and test 9 kinds of food in Guangxi to understand the pollution status of lead in the local main food. Methods Random sampling method was used to study the distribution of rice, pork, pig offal, aquatic products, infant food, algae, baked goods, milk powder, vegetables and so on in the urban areas of 14 cities in the region and in some counties (districts) 9 kinds of food sampling survey, testing and analysis of lead content. Results A total of 1649 samples were collected over the year, with a total exceeding standard rate of 3.09% (51/1649). Among them, algae exceeded the standard most frequently (16.67%), followed by pork and vegetables, with significant differences = 22.84, P <0.05). There was no significant difference between urban areas and rural areas (χ2 = 0.07, P = 0.795). In terms of origin, the over-standard rate of locally-produced foods in this monitoring was relatively high The distribution of local food products, found that excessive samples are mainly concentrated in the western Guangxi and northern Guangxi region, the regional exceeded the standard deviation was statistically significant (χ2 = 9.49, P <0.05). Conclusion The overall status of lead pollution in foodstuffs in Guangxi was relatively light in 2012, but the excess rate of some foodstuffs, such as algae, was relatively high. Therefore, we should strengthen the treatment and rectification of lead pollution in the environment to ensure the safety of table-top food.