|Table of Contents|

Solidification Performance for Heavy Metals in Polluted Soilsof Mined Area Using Sixthio Guanidine Acid(SGA)(PDF)

《南京师大学报（自然科学版）》[ISSN:1001-4616/CN:32-1239/N]

Issue:
2014年03期
Page:
62-
Research Field:
化学
Publishing date:

Info

Title:
Solidification Performance for Heavy Metals in Polluted Soilsof Mined Area Using Sixthio Guanidine Acid(SGA)
Author(s):
Zhang Fan1; 2; Wang Fenghe 1; Hao Haotian1; Zou Lina1; Ji Yingxue1; 2; Duan Lunchao1; Gu Zhongzhu2
(1.Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control,Department of Environmental Science and Engineering,Nanjing Normal University,Nanjing 210023,China)(2.School of Energy and Mechanics Engineering,Nanjing Normal University,Na
Keywords:
heavy metal chelating agent;  soils; heavy metal; stabilization
PACS:
X53
DOI:
-
Abstract:
The characteristics and distribution of different forms of heavy metals in soils contaminated from mined area were investigated,and were evaluated according to the BCR sequential extraction protocol. Stabilization performance of sixthio guanidine acid(SGA)and sodium dimethyl dithio darbamate(SDD)were compared.The results indicated that the soils were contaminated seriously by lead,cadmium and arsenium,the contents of As and Pb exceeded 10.17 times and 3.29 times than that of Environmental Quality Standard for Soils(GB 15618-1995)with the Grade Ⅲ standard respectively,and the content of Cd exceeded 28.7 times.SGA had an excellent comprehensive property in stabilization of the heavy metals of acid soluble in soils,the stabilization ratios for As,Pb and Cd were 92.73%,82.35% and 81.48% respectively,while SDD had a better property in immobilization of the heavy metals of oxidizable compared with SGA.As a novel heavy metal chelating agent,SGA can be used in remediation of soils contaminated by heavy metals.

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Last Update: 2014-09-30