研究论文
马明生,徐晓白.还原－衍生化高分辨气相色谱法测定复杂样品中痕量硝基多环芳烃（NO2－PAH）的研究[J].环境科学学报,1994,14(3):374-379
还原－衍生化高分辨气相色谱法测定复杂样品中痕量硝基多环芳烃（NO2－PAH）的研究
- DETERMINATION OF TRACE NITRO-POLYCYCLIC AROMATIC HYDROCARBONS IN COMPLEX SAMPLES BY REDUCTION-DERIVATIZATION HIGH RESOLUTION GAS CHROMA-TOGRAPHY
- 基金项目：国家自然科学基金
- 作者
- 单位
- 马明生
- 中国科学院生态环境研究中心, 北京 100085
- 徐晓白
- 中国科学院生态环境研究中心, 北京 100085
- 摘要：研究了还原-七氟丁酸酐衍生化高分辨气相色谱-ECD测定痕量硝基多环芳烃的方法,该法具有选择性好,灵敏度高的特点,适合于复杂样品痕量硝基多环芳烃的测定。建议采用以氨基多环芳烃HFBA衍生物为参比的HFBAPAH保留指数体系,利用保留指数进行双柱定性成功地在碳黑样品提取物中检出包括1-NO2芘在内的9种NO2-PAH并提出了定量结果。
- Abstract：In this paper a highly selective and sensitive method for analysis of NO2 -PAHs in complex sample is described in detail.After extraction and clean-up procedure,the NO2-PAHs in complex salnples were reduced to their res-pective amino-polycyclic aromatic hydrocarbons by NaBH4 catalyzed with cop-per（Ⅱ）chloride in methanol solution, Then the anmino compounds were ex-tracted by benzene and derivatized with heptafluorobutyric anhydride. The derivatives were determined by high resolution gas chromatography（HRGC）equipped with a 63Ni electron capture detector under linear-temperature-pro-gramming.The detection limits for NO2-PAHs ranged from 0.5 to ll pg.A carbon black sample of copy toner was analyzed by this method as an exam-ple. Nine NO2-PAHs were identified and among which six were determined basing on the comparison of the gas chromatographic retention data with those of standard compounds on two capillary fused silica columns-SE-54 and HP-17 of different polarities.
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