Farmland Soil Heavy Metal Pollution Assessment Of Dalian City Jinzhou District

The Dalian City Jinzhou District farmland soil heavy metalcontent of evaluation, each villages and towns collected3soilsamples were collected in30, soil samples. In order to farmlandsoil as the research object, on farmland heavy metal (Pb, Cd, Hg,As, Cu, Zn, Ni, Cr) pollution investigation and evaluation, theresults show that:Jinzhou District soil heavy metal Zn, Cd, Ni, Cr, Cu, Pb, Hgcontent were higher than the background value, obvious accumulation.One of Zn accumulation is the most serious, accumulation areareached66.7%; Cd accumulation area reached63.3%; Ni accumulationarea reached46.7%; Cr accumulation area reached40%; Cuaccumulation area reached10%; Hg accumulation area reached3.3%.As is best, not to produce a cumulative.From the single pollution index evaluation results can be seen,Jinzhou District has been subjected to Cd, Cu, Zn, Ni and Crpollution, cause harm to human health, including Cd and Ni pollutionis most serious, exceed the standard rate is achieved33.3%, Cuexceed the standard rate is10%, exceed the standard rate of Zn asof3.3%. Pb, Hg and As pollution of no position, can safeguard agriculture production, maintenance of a healthy body.From the comprehensive pollution index assessment results canbe seen, Jinzhou District36.7%area in the level of security, nopollution;46.7%of the area in soil pollution linewatch, soilbelongs to is clean;10%of the regional soil pollutants exceedssetting value, which belongs to the light pollution state, crop hasbeen pollution;6.6%regional soil belongs to heavy pollution, soiland crop pollution is serious.In farmland soil of Cu in soil sample between the largervariability, reflects the human activity has been to my areafarmland soil produced apparent effect. City suburb farmland soilheavy metal content than the outer suburbs, city of farmland soilpolluted by industrial and agricultural production and the citylife influence.