2009年广州市海珠区餐饮单位大米中铅镉砷污染现状及膳食暴露评估  

Analysis of rice contamination caused by lead,cadmium,arsenic and assessment of exposure for the residents in Haizhu Disctict,Guangzhou in 2009

作　　者：陈若虹[1] 张军[2] 凌东辉[1] 关皑菁[1] 段夏菲[1] 

机构地区：[1]广州市海珠区疾病预防控制中心,广州510288 [2]广东药学院生命科学与生物制药学院,广州510006

出　　处：《中国卫生检验杂志》2012年第2期318-319,321,共3页Chinese Journal of Health Laboratory Technology

基　　金：有害生物控制与资源利用国家重点实验室开放课题基金资助项目(SKLBC2010K04)

摘　　要：目的:了解广州市海珠区餐饮行业大米中铅(Pb)、镉(Cd)、砷(As)等重金属污染现状及评估本地居民通过吃米饭摄入铅、镉、砷的情况。方法:抽取辖区内的单位饭堂和餐饮单位的大米样本,采用石墨炉原子吸收法(GFAAS)和原子荧光法(AFS)进行铅、镉、砷等项目的检测。结果:广州市海珠区餐饮行业大米中铅、镉、砷的检出率分别为77.8%、73.1%、97.2%,铅和镉的合格率为94.4%和85.2%,估算居民(平均体重)每周通过大米摄入铅、镉、砷的量为3.2×10-5～0.009、4.9×10-5～0.006、9.8×10-4～0.003 mg.kg-1bw。结论:广州市海珠区餐饮行业大米中铅、镉的含量尚在安全范围,但镉的含量偏高,应引起关注。Objective：The study was conducted to investigate the rice contamination caused by lead, cadmium, arsenic in Haizhu District of Guangzhou and evaluate the exposure from rice samples for the residents. Methods： The rice samples were col- lected from the canteens and restaurants in Haizhu District and analyzed by GFAAS and AFS. Results： The positive rates of lead, cadmium, arsenic in the rice samples of restaurants were 77.8%, 73.1%, 97.2% and the exposed intake of lead, cadmium, ar, senic for the residents were 3.2 x 10 ^-5 - 0. 009, 4.9 x 10 ^-5 - 0.006, 9.8 x 10^ -4 - 0.003 mg · kg^-1 bw each week. Conclu- sion： The concentrations of metals in rice samples of Haizhu District are safe, but the level of cadmium is relatively high.

关 键 词：大米 铅 镉 砷 膳食暴露 

分 类 号：TS207.51[轻工技术与工程—食品科学]