The Study Of The Environmental Of Soil Impacting On Material Contents Of Heavy Metal In The Vegetables

This text regards some vegetables plantedt on three kinds of soil tested in Chongqing as the research object,analyze its heavy metal source,determine its content of heavy metal,among them mainly choose three kinds of heavy metal(the copper,chromium,arsenic),absorb the characteristic of accumulating to the heavy metal after studying different crops.And choose three major kinds of vegetables(leaf,melon and fruit,root and caudex)in main agricultural product wholesale markets of Chongqing,determine the content of the above three kinds of heavy metal too,then plum Luo index law go on appraisal of security to their adopt,offer scientific basis for eating in processing and security of the vegetables.Discretion the concentration of Cu and Cr in five vegetables which growth in non-pollute paddy soil is:The quantity that three kinds of metallic elements transfer from the soil to in the vegetables is basically identical too.(vegetables of leaf and caudex)＞vegetables of leaf;the concentration of As is(vegetables of leaf and caudex)＜vegetables of leaf.Discretion the concentration of Cu in five vegetables which growth in non-pollute purple soil is:(vegetables of leaf and caudex)＞vegetables of leaf;the concentration of Cr and As are(vegetables of leaf and caudex)＜vegetables of leaf.Discretion the concentration of Cu and Cr in five vegetables which growth in non-pollute alluvium soil is:(vegetables of leaf and caudex)＞vegetables of leaf;the concentration of As is (vegetables of leaf and caudex)＜vegetables of leaf.Either sameness pH in paddy soil,purple soil and alluvium soil,Discretion the concentration of Cu,Cr,As is:Cr＞Cu＞As.Discretion the concentration of Cr and As in five vegetables which growth in Atmosphere polltue paddy soil is:(vegetables of leaf and caudex)＞vegetables of leaf;the concentration of Cu is no rule compare to the non-pollute area,but cabbage is lowest.Discretion the concentration of Cu,and Cr in five vegetables which growth in Atmosphere polltue purple soil is(vegetables of leaf and caudex)＞vegetables of leaf.Discretion the concentration of As in five vegetables which growth in Atmosphere polltue purple soil is(vegetables of leaf and caudex)＜vegetables of leaf.Either sameness pH in paddy soil,purple soil and alluvium soil,Discretion the concentration of Cu,Cr,As is:Cr＞Cu＞As.Discretion the concentration of Cu in five vegetables which growth in integrate polltue paddy soil is:(vegetables of leaf and caudex)＞vegetables of leaf;the concentration of Cr and As are no rule compare to the non-pollute area,but,(vegetables of leaf and caudex)＞vegetables of leaf.Discretion the concentration of Cu,Cr and As in five vegetables which growth in integrate polltue purplel soil is:(vegetables of leaf and caudex)＜vegetables of leaf.Either sameness pH in paddy soil,purple soil and alluvium soil,Discretion the concentration of Cu,Cr,As is:Cr＞Cu＞As.In carrying on the test on appraisal of security to the vegetables,through determining and finding the content of heavy metal of 3 major kinds of vegetables,utilize arithmetic mean not to count the content of heavy metal in different samples of the same variety rationally enough.a lot of vegetables are only to reach the cordon level,and unable to reflect among them and high-loadly objectively.And Nemerow pollute composite index law apply to vegetables sample many kinds of heavy metal unite function appraisal of risk of health of harmfulness under the terms.Determine the result to reveal:Cu content is relatively low in three major kinds of vegetables,well below the food sanitary standard.But As,Cr have phenomenon of exceeding standard of a certain degree, prove two heavy metal these apt the rich collection of vegetables.The degree of pollution of three kinds of vegetables is successively leaf＞root and caudex＞melon and fruit.From the point of security of the edible vegetables,to eat more melon and fruit vegetables is safer than to eat vegetables such as spinach,Chinese cabbage,spring onions,celery,water spinach and lettuce,etc.. Meanwhile,we should also notice in three major kinds of vegetables that are chosen,the vegetables of leaf are comparatively serious in pollution,a lot are slight pollution,among them the spring onions have even already reached intermediate pollution.The vegetables pollution state of Chongqing is troubling.