摘要
多环芳烃(PAHs)单体同位素组成是辨识这类污染物来源,评价其在环境中生物可降解性的重要手段。准确高精度的PAHs单体同位素比值测定有赖于样品预处理方法的改进和相应仪器分析技术的提高。文章综合评述了近年来PAHs单体同位素分析中的预处理方法研究进展,主要包括索氏提取、加速溶剂萃取等提取方法和硅胶、氧化铝柱色谱、固相萃取、凝胶渗透色谱、高效液相色谱、薄层色谱等净化方法;介绍了PAHs单体同位素组成的气相色谱-同位素比值质谱分析方面的研究进展,包括色谱柱头压、进样时间、PTV大体积进样技术等仪器参数的选择和校准同位素内标的选择等数据处理方式。
The individual compound isotopic composition determination of polycyclic aromatic hydrocarbons （PAHs） has become an important method in pollutant source identification and assessment of bioavailability of these pollutants. Accurate and precise determination of individual compound isotopic composition of PAHs depends on the sample pretreatment and instrument measurement, This review is focused on the sample pretreatment techniques including Soxhlet extraction, accelerated solvent extraction （ASE） and the sample purification techniques such as silica gel, alumina gel, SPE, GPC, I-IPLC and TLC. The recent development on GC-C-IRMS instrument measurement and data processing for the measurement of individual compound isotopic composition of PAHs such as column head pressure, sampling time, PTV-LVI technique and isotope internal standard are also been presented.
出处
《岩矿测试》
CAS
CSCD
北大核心
2010年第1期64-70,共7页
Rock and Mineral Analysis
基金
国家自然科学基金项目资助(40972121)
国土资源部地质大调查项目资助(1212010816028)
国土资源部百人计划项目资助
国土资源部公益性行业科研专项资助(200911043-29)
关键词
多环芳烃
提取技术
净化技术
气相色谱-燃烧-同位素比值质谱法
polycyclic aromatic hydrocarbons
extraction technique
purification technique
gas chromatography- combustion-isotope ratio mass spectrometry
