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目的了解平顶山市铅、镉、汞等重金属元素和二氧化硫、亚硝酸盐等化学物质对食品的污染状况,提供防制食品化学性污染科学依据。方法每县(市)、区抽取城区和乡镇3～5个监测点,在每个监测点按照拟定的食品类别及数量,进行采样、送检。结果共采集14类757份食品样品,检出超标样品59份,超标率为7.8%,农村超标率显著高于市区超标率(χ2=4.314,P<0.05)。结论主要食品(粮、肉、蛋、蔬菜等)污染较重,次要食品(茶叶、乳制品饮品等)污染较轻,日常加工食品污染较重,农村食品污染明显高于城市。要从源头、从日常生活中防制食品重金属及化学物质污染。实现食品安全“从农田到餐桌”的全程有效监管,防止食品污染及食品安全事件发生。
Objective To understand the pollution status of heavy metals such as lead, cadmium and mercury and sulfur dioxide, nitrite and other chemicals in food in Pingdingshan City and to provide a scientific basis for controlling the chemical pollution of foodstuffs. Methods Each county (city) and district should draw 3 to 5 monitoring points in urban areas and towns and townships. Sampling and submission should be carried out at each monitoring point according to the type and quantity of food to be formulated. Results A total of 757 samples of 14 kinds of food were collected and 59 samples exceeding the standard were detected. The exceeding standard rate was 7.8%. The exceeding standard rate in rural areas was significantly higher than that in urban areas (χ2 = 4.314, P <0.05). Conclusion The main food (grain, meat, eggs, vegetables, etc.) is heavily polluted, the secondary food (tea, dairy drinks, etc.) is less polluted, the daily processed food is polluted heavier and the pollution of rural food is obviously higher than that of the city. From the source, from the daily life of food heavy metal contamination and chemical control. Achieve food safety “Farm to table ” the entire process of effective regulation to prevent food contamination and food safety incidents.