摘要
利用构建的土壤半野外试验系统 ,在接近野外 (半干旱气候 )条件下 ,研究高含量 ( 4 0 0mg/kg)高氯代PCBs(以五氯代为主 )在系统中的迁移与消失规律 .结果表明 ,在处理后的 1 2个月内 ,PCBs几乎没有迁移 ,也几乎没有减少 ;处理 2 4个月后 ,仅有不超过 2 %的PCBs向下层迁移 ,但迁移不超过 1 0cm ;在处理 2 4个月后 ,处理层PCBs的浓度降低 1 0 1 9%,这其中包含向下迁移的部分 .该项研究为PCBs的填埋或其它处理措施提供了科学依据 。
The disappearance and transfer behavior of polychlorinated biphenyl (PCBs) (the mains of penta PCBs) at higher concentrations (400 mg/kg) bestrewed into semi field soil systems were studied under near field conditions (semi dry climate in North China). The result showed that PCBs did not lose and transfer forward below after 12 months of treatment. And after 24 months of treatment, only less than 2% of PCBs transferred vertically no more than 10cm and PCBs concentration at treatment layers decreased 10.19% including the amount of transfer. It provides the scientific foundation for the landfill or other treatment measurements of PCBs, also gives the basic data for ecological risk assessment of PCBs and other relative compounds.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2003年第4期158-160,共3页
Environmental Science
基金
国家自然科学基金重点资助项目 (2 98371 80 )
关键词
多氯联苯
PCBS
土壤半野外试验系统
迁移
消失
polychlorinated biphenyl (PCBs)
semi field soil systems
disappearance
transfer behavior
