The Analysis On The Form And Distribution Of Heavy Metals In West Suburb Of Shenyang

This work refers to the systematical analysis of the form and distribution of heavy metals, such as cadmium, lead, copper, and zinc, in the soil of Shenyang western suburb area. The heavy metal pollution situation was discussed. The different forms of heavy metals have different environment effects, and directly affect migration and circulation of the heavy metals in environment. The form transformation of the heavy metal in soil is important for its environment effects, and for the repairment of heavy metal polluted soil.Heavy metals were chemically extracted from soil and the content of each form was measured. The soil sample was destroyed by the mixture of HCl-HNO₃-HF-HClO₄ and then the overall content of the metal was measured by atomic absorbent spectroscopy. urges to dispel, destroys the soil thoroughly the mineral crystal lattice, causes in the test specimen to make the measured elements in the specimens dissolve entirely into the tested liquid. Using potential method to determine the soil physics and chemistry nature pH value. Its principle is extracting water-soluble hydrogen ions in the soil by water. The negative logarithm of the consistency of the hydrogen ion equals pH value. The machinery composes can be determinated by using the soil hydrometer which specially made determinates the fluid proportion in some depth in the scheduled time and thus converts the proportion of the thick and fine grain in the soil and then calculate the rank of the quality of the soil. The organic matter is determinated by using heavy chromium oxidizes the organic carbon in soil under certain temperature. Partial can be reeducated to green , thus using color method to determine the luminosity of . Take the carbon oxidation fluid in the glucose standard solution as the standard color step, carries on compared to the color determination, calculate the organic carbon n soil and the converts it into the organic content.The soil pollution in Shenyang western suburb irrigation area is not very serious. But the area is polluted by Cd, Cu, Zn, and Pb, and Cd pollution is extremely serious. Generally speaking the Shenyang western suburbs area soil organic content is 0.91-3.76% equally, is on the level; The soil pH value is 4.81-6.70 equally, by acid soil primarily; Indicated to the soil sample statistical analysis result, this anthropogenic soil is composed by silly soil and spun sand primarily. Many heavy metal Cd exits in exchange condition, which is advantageous to the research of pollution repair and is more advantageous to the government pollution. But heavy metal Zn, Pb,Cu mainly exist in the organic synthesis condition ,which are not easy to migrate and transform.