Research On Distribution Characteristic And Environmental Quality Assessment Of Heavy Metals In The Soil In Songyuan

With the development of the production of human life and environment pollutionis becoming more and more serious, environmental problems have attracted theattention of relevant departments, according to the source, the harm and the degree ofheavy metal pollution of soil heavy metal pollution, by Nemo comprehensivepollution index evaluation, that the study results:1.Along with the advance of our urbanization, SongYuansoil pH has a rising trend,may be due to urban construction sites, such as some waste, construction wasteconcrete, bricks and other alkaline waste, such as pH value and the background valueof the difference is more and more big. Especially in the cement plant (pH=8.35), thetube mill (pH=8.01), the model steel window factory near (pH=8.03).2. SongYuan soil heavy metals in urban areas have a relatively large variation ofsex, such as mercury and cadmium, show the life of people the soil heavy metalcontent in the vicinity of production activities have had an impact, individual localpollution.3.Heavy metals in different area of the city’s distribution has the followingcharacteristics: the cadmium content of sorting for the development of newdistrict>qianguo industrial park>giada rainbow industrial park residents livecommercial hybrid zone, mercury content in order for the development of newcity>qianguo giada rainbow industrial park industrial park>residents live commercialhybrid zone, ordering lead commercial mixed zone>development new area forresidents>qianguo giada rainbow industrial park industrial park, arsenic sort ofqianguo industrial park>giada hong industrial park>giada rainbow industrial parkresidents live commercial hybrid zone, copper content in order for the development ofnew district>qianguo industrial park>giada rainbow industrial park residents livecommercial hybrid zone, chromium content in order to giada>qianguo rainbowindustrial park industrial park development zone>residents live commercial hybridzone, zinc content in order to giada>qianguo rainbow industrial park industrial parkdevelopment zone business mix area>residents. 4.According to the evaluation criteria, the use of internal ROM thecomprehensive pollution index method for soil quality evaluation in the study area.