摘要
通过零顶空提取器以纯水为提取剂获得固体废物浸出液,再以吹扫捕集-气相色谱质谱法测定浸出液中的挥发性有机物(VOCs)。在固体废物样品中加标,三氯甲烷和四氯化碳的浸出效率均低于5%,其他VOCs的浸出效率在15.2%~23.9%之间。在固体废物浸出液中加标,测得13种VOCs的回收率在63.3%~90.0%之间,方法检出限(不包括浸提过程)在2×10^(-6)~1×10^(-5)mg/L之间。对某塑料加工厂固废样品进行分析,部分VOCs有检出,但未超过《危险废物鉴别标准浸出毒性鉴别》规定的标准限值。
A zero head-space extracting with purge and trap gas chromatography / mass spectrometry（ ZHE-PT-GC / MS）method was developed to determine volatile organic compounds（ VOCs） in solid waste leachates. The leaching efficiency of chloroform and carbon tetrachloride was less than 5% when adding standard in solid waste samples,which of other VOCs were between15. 2% ~ 23. 9% respectively. The recoveries of standard adding in solid waste leachates were between 63. 3% ~ 90. 0%,and the detection limits of the method without extraction process were between 2 ×10^-6× 10×10^-5mg / L respectively. Some VOCs were detected in the leachates of solid waste samples from a plastic plant,the concentrations of which below relevant standards.
出处
《环境科学与管理》
CAS
2015年第11期134-137,共4页
Environmental Science and Management
