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《Journal of Anhui Agricultural Sciences》 2011-07
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Heavy Metal Concentrations in Vegetables Sold in Main Markets of Guiyang City and Its Risk to Human Health

ZHANG Dan et al(School of Chemistry and Material Science,Guizhou Normal University,Guiyang,Guizhou 550001)  
[Objective] To survey the extent of pollution of heavy metals in vegetables and pay attention to their effects on human health.[Method] Twelve kinds of vegetables were collected from a farmer's market in Guiyang City.Copper,zinc and lead concentrations in the vegetables were detected by flame atomic absorption spectrometry.[Result] The over-standard times of lead concentration in lettuce and that of copper concentration in leek were 1.215 and 1.748,respectively,and the pollution was at a slight level.Average annual health risk for each Guiyang City resident caused by eating vegetables was 3.132 × 10-7/a due to copper pollution,4.166 × 10-8/a due to zinc pollution,and 4.354 × 10-8/a due to lead pollution.These values were lower than the corresponding item of ICRP standard,and such pollution did not cause hazards to people.[Conclusion] The study has significance to ensure the quality of vegetables and food safety for people.
【Fund】: 贵阳市社会发展攻关计划(2009-3-040)
【CateGory Index】: X503.1
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