摘要
以贵州省晴隆锑矿区受砷锑严重污染土壤为研究对象,采用震荡淋洗技术,研究了酒石酸,苹果酸在不同浓度、不同震荡时间、不同pH条件下对重金属砷锑的淋洗效果。实验结果表明,酒石酸、苹果酸随着浓度的升高,对土壤中砷锑淋洗效果显著增加;随着震荡时间的延长,酒石酸、苹果酸对重金属淋洗效果逐步提高,震荡8h效果最佳。实验结果还发现,pH对酒石酸、苹果酸淋洗效果的影响从酸性pH=3至碱性pH=12过程中逐步减弱。
Leaching effect on arsenic and antimony in soil of antimony ore area in Guizhou Province, China by tartaric and malic acid were studied. Experimental results show that the leaching efficiency of soil arsenic and antimony by tartaric and malic acid increases significantly with increasing of concentrations of acids and increases gradually with increasing leaching time. The best leaching efficiency reaches after 8 h of leaching time. Experimental results also show that the leaching effect of tartaric and malic acid gradually decreases with increasing pH from 3 to 12.
出处
《地球与环境》
CAS
CSCD
2016年第3期304-308,共5页
Earth and Environment
基金
国家自然科学基金项目(41062007)
贵州省科技厅重点实验室计划项目(黔科合计Z字[2012]4012)
贵州大学2015年研究生创新基金项目(研理工2015076)
关键词
酒石酸
苹果酸
螯合剂
淋洗
SB
As
Tartaric acid
malic acid
chelating agent
leaching
Sb
As
