论文部分内容阅读
目的了解绍兴地区市售食品中稀土元素的污染水平,为人群膳食中稀土元素摄入量评估及国家标准的修订提供依据。方法 2014年在绍兴市超市、农贸市场、副食品店等采集蔬菜、水果、粮食、茶叶、水产品、肉类6类食品样品共241份,采用GB 5009.94—2012《植物性食品中稀土元素的测定》检测食品中16种稀土元素的含量,按GB 2762—2012《食品中污染物限量》评价检测结果。结果 241份样品中16种稀土元素的平均检出率为24.5%~78.8%;各类食品中的稀土元素的检出率为72.7%~100.0%,稀土氧化物总量的平均值为6.31μg/kg~1 834.30μg/kg。茶叶中稀土元素的检出率为100.0%,超标率为30.0%,最大值为9 273.80μg/kg,为国家标准限值的4.64倍。结论绍兴地区市售食品中稀土元素总体污染水平较低,但茶叶中稀土元素含量较高,建议加强对茶叶中稀土元素含量的监测力度。
Objective To understand the contamination level of Rare Earth Elements (REEs) in commercial foods in Shaoxing, and to provide basis for the assessment of Rare Earth Element (Rare Earth Element) intake in the population and the revision of national standards. Methods A total of 241 samples of 6 types of foodstuffs such as vegetables, fruits, grains, tea, aquatic products and meat were collected in Shaoxing City supermarkets, farmers’ markets and non-staple food stores in 2014, using GB 5009.94-2012 “Rare Earth Elements Determination of ”detection of 16 kinds of rare earth elements in food, according to GB 2762-2012“ Limit of contaminants in food ”evaluation test results. Results The average detection rates of 16 rare earth elements in 241 samples ranged from 24.5% to 78.8%. The detection rates of rare earth elements in various foodstuffs ranged from 72.7% to 100.0%. The average contents of rare earth oxides were 6.31μg / kg ~ 1 834.30 μg / kg. The detection rate of rare earth elements in tea was 100.0%, the exceeding standard rate was 30.0% and the maximum value was 9 273.80 μg / kg, 4.64 times the national standard limit. Conclusion The overall level of rare earth elements pollution in commercial foods in Shaoxing is low, but the content of rare earth elements in tea is high, so it is suggested to strengthen the monitoring of rare earth elements in tea.