人工合成钝化剂原位钝化修复镉污染土壤的试验研究  

Experimental Study on In-situ Passivation and Remediation of Cadmium Contaminated Soil Using Artificially Synthesized Passivators

作　　者：于大澍 梁永新[1] 宋佳瑞 侯立叶[1] 廖漓文 YU Dashu;LIANG Yongxin;SONG Jiarui;HOU Liye;LIAO Liwen(Nuclear Industry 247 Brigade of Tianjin North China Geological Exploration Bureau,Tianjin 301800,China)

机构地区：[1]天津华北地质勘查局核工业二四七大队,天津301800

出　　处：《中国资源综合利用》2024年第6期190-192,共3页China Resources Comprehensive Utilization

摘　　要：开展盆栽试验,在高含量、中含量与低含量的镉污染土壤中分别加入不同剂量的人工合成钝化剂(巯基改性黏土、硅钙肥、钙镁磷肥),然后种植油菜,待油菜成熟后采集茎叶样品测定镉含量。根据油菜茎叶镉含量检测结果,3种钝化剂对镉污染土壤的综合修复效果排序为:巯基改性黏土>硅钙肥>钙镁磷肥。巯基改性黏土的钝化阻控率最高,能有效地阻止镉向油菜体内迁移。The potted experiment is conducted,in which different doses of artificially synthesized passivators(thiol modified clay,silicon calcium fertilizer,calcium magnesium phosphate fertilizer)are added to high,medium,and low cadmium contaminated soil,and then rapeseed is planted,and stem and leaf samples are collected to determine cadmium content after maturity.According to the detection results of cadmium content in rapeseed stems and leaves,the comprehensive remediation effect of three passivators on cadmium contaminated soil is ranked as follows:mercapto modified clay>silicon calcium fertilizer>calcium magnesium phosphate fertilizer.The passivation and inhibition rate of thiol modified clay is the highest,which can effectively prevent cadmium from migrating into rapeseed.

关 键 词：镉污染土壤 原位钝化修复 钝化剂 巯基改性黏土 硅钙肥 钙镁磷肥 

分 类 号：X53[环境科学与工程—环境工程]