2000年中国总膳食研究——膳食汞摄入量

目的了解2000年中国不同地区膳食中总汞含量和成年男子人均汞膳食摄入量。方法采用总膳食研究方法,通过膳食调查、统计不同地区人群各种食物的消费量、按照所得的食物消费量数据烹调加工成可食的各种食物类别。膳食样品中总汞含量采用冷原子吸收光谱法测定,并按成年男子各种食品的消费量与实测膳食中汞的含量相乘得到不同地区总汞的实际摄入量。采用世界卫生组织推荐的总汞每周可耐受摄入量(PTWI)值评价中国四个大区成年男子膳食中总汞摄入的安全性。结果除某些地区的个别食物样品超过中国食品卫生中总汞限量标准外,四个大区和全国成年男子平均膳食总汞摄入量(占%PTWI)分别为:8·86μg(19·7%)、4·69μg(10·4%)、7·01μg(15·6%)、6·88μg(15·3%)和6·86μg(15·2%)。结论结果显示中国人群膳食中总汞摄入量是安全的。

Chinese total diet study in 2000 --the dietary mercuric intakes

OBJECTIVE: To assess the safety of dietary mercuric intakes in different areas in China. METHODS: Using the Chinese total dietary study method, the analytical samples were obtained in different areas by food consumption survey, food aggregation, food sampling and preparation. The levels of dietary total mercury were determined by cold vapor atomic absorption spectrometry. The dietary total mercuric intakes in different areas were obtained by timing the food consumption data and the mercuric content in different dietary samples. The safety of dietary mercury was evaluated in Chinese four regions and average adults by using the dietary mercuric PTWI recommended by WHO. RESULTS: The results indicate that the dietary mercuric intakes are safe in different regions. Only a few samples in some areas exceed tolerance limits of China national standard. Dietary total mercuric intakes (of PTWI) in four different regions adults and mean were 8.86 microg (19.7%), 4.69 microg (10.4%), 7.01 microg (15.6%), 6.88 microg (15.3%), 6.86 microg (15.2%), respectively. Mainly sources of dietary mercuric intake were cereals, vegetables and sea foods. CONCLUSION: The result shows that the total mercuric intakes in Chinese people are safe.