摘要
为研究危险废物焚烧炉（HWI）对周边环境的影响，检测浙江北部某HWI周边土壤中二恶英（PCDD／Fs）、六氯苯（HxCBz）、多环芳烃（PAHs）的污染水平．土壤中各污染物的质量分数分别为：PCDD／Fs的毒性当量（I—TEQ）为0．53～5．78Pg·g^-1、HxCBz为0．15～0．65ng·g^-1、PAHs为0．20～4．49μg·g^-1．目前污染物质量分数属于较低水平，和其他文献报道值相当．PCDD／Fs最高质量分数位于离烟囱最近的采样点（〈250m），同时二恶英质量分数随距离增加呈现一定的降低趋势．利用主成分分析（PCA）研究样品中PCDD／Fs分布的异同，结果表明其他PCDD／Fs污染源及影响因素对该地区土壤中污染物质量分数的作用不可忽视．本研究的数据对未来进一步了解HWI环境影响具有实际意义．
To investigate the environmental impact of a hazardous waste incinerator （HWI）, levels of polychlorinated dibenzo-p-dioxins and dibenzofurans （PCDD/Fs）, hexachlorobenzene （HxCBz） and polycyclic aromatic hydrocarbons （PAHs） were determined in soil samples collected in the vicinity of a HWI in north of Zhejiang province. The concentration of PCDD/Fs international toxic equivalent （I-TEQ） is in the range of 0.53 to 5.78 pg·g^-1, and HxCBz concentration ranges from 0.15 to 0.65 ng·g^-1, as well as PAHs value is 0. 20 to 4.49 μg·g^-1. The levels of contaminants are still low, which are generally comparable with other studies. The highest concentration of PCDD/Fs are observed in the samples close to the chimney （〈250 m）, and PCDD/Fs concentration slightly decreased with the increasing distance from HWI. By principal component analysis （PCA）, it seems other sources of PCDD/Fs and influence factors are not negligible in this studied region. The data of this study is useful for the further assessment of the environmental impact of the HWI in future.
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2011年第5期896-900,共5页
Journal of Zhejiang University：Engineering Science
基金
国家"863"高科技研究发展计划资助项目(2007AA06Z336)
面上社会发展资助项目(2008C23090)
关键词
二恶英
六氯苯
多环芳烃
危险废物焚烧炉
土壤
polychlorinated-p-dioxins and dibenzofurans
hexachlorobenzene
polycyclic aromatic hydrocarbons
hazardous waste incinerator
soil
