居民膳食砷摄入水平调查  

An analysis on the dietary arsenic intake level among residents in Hangzhou City

作　　者：刘辉[1] 黄利明[1] 印晓虹[1] 

机构地区：[1]杭州市疾病预防控制中心,浙江杭州310021

出　　处：《浙江预防医学》2015年第6期547-550,571,共5页Zhejiang Journal of Preventive Medicine

基　　金：杭州市科技发展计划(20100933B06)

摘　　要：目的了解杭州市居民膳食砷摄入情况,为开展相关膳食安全性评价提供依据。方法采用多阶段分层整群随机抽样方法抽取1 744名居民并采用总膳食研究方法收集其食物消费量数据,在烹调后测定代表性混合食物样品中的总砷并推算无机砷含量,计算个体摄入量,与砷原每日最高容许摄入量(TDMI)和无机砷原暂定每周可耐受摄入量(PTWI)比较,分析其摄入水平。结果杭州市居民膳食总砷每日摄入量和由此推算的无机砷每周摄入量中位数分别为1.4和3.0μg/kg BW,占原TDMI的2.8%和原PTWI的20.2%;18岁以下组总砷每日摄入量和推算的无机砷每周摄入量中位数分别为1.6和3.5μg/kg BW,均高于其他年龄组(Z=-7.577^-2.917,P均<0.01);谷类食物对个体膳食砷摄入贡献率最高。结论杭州市居民膳食砷摄入量低于相关限值,但未成年人摄入量高于成人,应引起重视。Objective To evaluate the dietary arsenic intake level among residents in Hangzhou city,and to provide scientific basis for further food safety assessment.Methods A stratified multi -stage cluster sampling method was performed,and a total of 1 744 subjects were enrolled.Total diet survey was conducted to collect food consumption data through both food -weighting and recording during 3 consecutive days.Representative mixed food samples were prepared for total arsenic （tAs）detecting by using inductively coupled plasma -mass spectrometry （ICP -MS）.Daily tAs and weekly presumptive inorganic arsenic （p -inAs）intakes were calculated and compared with corresponding tolerable limit values.Results The medians of dietary tAs and p -inAs intakes were 1 .4 μg/kgbw/d and 3.0 μg/kgbw/week,which accounted for 2.8% and 20.2% of corresponding former TDMI /PTWI,respectively.The tAs and p -inAs intake （1 .6 μg/kg·bw/d and 3.5 μg/kg·bw/week,respectively）in the age group of 〈1 8 years were significantly higher than that of other age groups （Z =-7.577 ^-2.91 7,P 〈0.01 ）.The mainly source of individual dietary arsenic intakes was cereal foods.Conclusion The dietary intake of tAs and p -inAs are safe,but more attention should be paid to juveniles for the dietary intakes of tAs and p -inAs .

关 键 词：膳食 砷 摄入量 居民 

分 类 号：R151[医药卫生—营养与食品卫生学]