Heavy Metals In Soil Arsenic, Cadmium, Lead, Chromium, Mercury Extraction Agents Available

With the intensive study of the migration and accumulation behavior of soil heavymetal element, in practical application,it has already shown the inadequacies thatevaluation soil heavy metal pollution of the total content of heavy meta.Therefore, the"effective state" as an index of soil pollution intensity evaluation, can better reflect theactual pollution condition and its damage to plants.So the research of heavy metal effectivestate increasingly important.In this paper, arsenic, cadmium, lead, chromium, mercury geochemistry of the fiveelements and available analysis techniques to compile, based on the three more commonlyused by hydrochloric acid leaching agent, DTPA, Calcium Chloride for Tongling Miningarea, Anhui Yangtze River heavy metal contaminated areas, hilly areas in Southern AnhuiHeavy Metals in soil and soil on the growth of grass plants and grass types of tea plants toheavy metals in the correlation analysis. Of the three extractors yellow brown soil, yellowsoil both Heavy Metals in soil extraction; two heavy metals in plants and hydrochloricacid extractants in the extraction of heavy metals in yellow-brown correlation; threeExtractors yellow brown soil pH in the different extraction effects of Heavy Metals;hydrochloric acid extraction agent in the different extraction conditions on the yellowbrown of Heavy Metals Extraction of Hg effect; three extractors of cadmium in soil,Lead, chromium, arsenic, mercury extraction of five elements of comparison. The mainresults are as follows:1Hydrochloric acid extraction agent for heavy metals in soil most of the elementsextracted.0.1mol/l hydrochloric acid extractant yellow brown soil, yellow soil of HeavyMetals As, Hg, Cd, Pb extracted from its soil, the amount of grass growing in the heavymetal content of the grass plants showed a significant correlation, especially Yellow brownsoil and yellow soil Cd Heavy Metals in the brown and yellow of Heavy Metals Pb grassand soil on the growth of grass plants to heavy metals were significantly correlatedrelationship.2Calcium chloride extractors acid yellow brown soil, yellow soil Cr HeavyMetals in the amount of the extraction of soil with grass growing in grass plants showed asignificant correlation, especially for the Heavy Metals in a yellow brown Extraction of Crvery significant effect relationship. Calcium chloride extraction solvent that is suitable forHeavy Metals in Soil Cr extraction.3Soil extractant on the extraction of various effects of Heavy Metals and its soil type on plant growth: Hydrochloric acid, calcium chloride as extraction agents were onthe yellow brown Extraction of Heavy Metals on the amount of soil with two types ofplants growing in the content of heavy metals in the relevance of research to0.1mol/lhydrochloric acid extraction Agents on Heavy Metals yellow brown Hg, Pb and quantity ofthe extraction of heavy metals content in two types of plants that the correlation betweenthe grass plants are slightly larger than the grass tea, but the difference was not significant;and0.1mol/l hydrochloric acid extractors extract the active state of the soil Cd, As and Crextracted amount of calcium chloride and heavy metals in the two plants showed asignificant correlation, but the extraction of three elements Are greater than the correlationbetween tea grass grasses.4Three heavy metals in soil extractors Cr, Hg, Cd, Pb extracted four elementshave a certain capacity, in particular heavy metals Cd and Pb, the average extraction rateof forty to fifty percent, but the chloride and DTPA As calcium extraction of heavy metalsextractors less capable.5According to the data show that the hydrochloric acid leaching agent for heavymetals in soil and effective Cd, Pb and As in the extraction, on extraction of heavy metalshad no significant effect of Cr; DTPA extraction of heavy metals in the soil alkaline agenteffective Cr, Cd, Pb extraction, As there is no ability to extract heavy metals; calciumchloride extraction solvent only for Cr on acid extraction of heavy metals in soil. Heavymetal Hg on three extractors are not applicable.