| 13C同位素稀释法测定国产多氯联苯的2,3,7,8－TCDD毒性当量 |
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| 引用本文： | 李灵军,蒋可.13C同位素稀释法测定国产多氯联苯的2,3,7,8－TCDD毒性当量[J].环境科学学报,1995,15(4):433-439. |
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| 作者姓名： | 李灵军 蒋可 |
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| 作者单位： | 中国科学院生态环境研究中心,北京 100085,中国科学院生态环境研究中心,北京 100085 |
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| 基金项目： | 国家“八五”科技攻关项目;国家自然科学基金 |
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| 摘 要： | 应用质量控制方法测定了２种国产商品多氯联苯中１７个，２，３，７，８位有氯取代的二ｅｙｉｎｇ同族体，获得准确的定量结果，加入＾１３Ｃ标记物的ＰＣＢｓ样品用多级酸碱硅胶柱和氧化铝柱提取分离，用毛细管色谱／高分辨质谱定量，２种样品中都含有较多的２，３，７，８－ＴＣＤＦ和２，３，７，８Ｐ５ＣＤＦ，１＾＃ＰＣＢ的２，３，７，８－ＴＣＤＤ毒性当量值为２１７ｎｇ／ｇ，２＾＃ＰＣＢ为４１７ｎｇ／ｇ，毒性主要来自Ｐ
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| 关 键 词： | 碳13 同位素稀释 毒性当量 多氯联苯 质量控制 |
| 收稿时间： | 9/7/1994 12:00:00 AM |
DETERMINATION OF TOXIC EQUIVALENTS OF PCDD /Fs IN TWO CHINESE COMMERCIAL PCBs BY C ISOTOPE DILUTION METHOD |
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| Li Lingjun and Jiang Ke.DETERMINATION OF TOXIC EQUIVALENTS OF PCDD /Fs IN TWO CHINESE COMMERCIAL PCBs BY C ISOTOPE DILUTION METHOD[J].Acta Scientiae Circumstantiae,1995,15(4):433-439. |
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| Authors: | Li Lingjun and Jiang Ke |
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| Affiliation: | Reseearch Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 and Reseearch Centre for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085 |
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| Abstract: | Seventeen 2, 3, 7, 8-substituted PCDD/Fs congeners in Chinese commercial PCBswere determined by HRGC/HRMS.PCRs samples spiked with the surrogate standard mix-ture of 13C-labelled PCDD/Fs were applied to multilayer acid/base silica column and basic a-lumina column to remove the inteferences. Quantitative analysis was carried out by HRGC/HRMS. Absolutely no PCDDs was founded in two Chines commercial PCBs, whereas thecontent of PCDFs were found in PCBs preducts, Acute toxic 2, 3, 7, 8-TCDF and 2, 3, 4, 7, 8-P5CDF congeners were detected in both samples, The comparison with commercialPCBs from other countries was conducted as well.In addition , quality control and qualityassurance requirements for quantitative analysis of seventeen toxic PCDD /Fs congeners byHRGC/HRMS were addressed. |
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| Keywords: | ?13)C isotope dilution method 2 3 7 8-TCDD TEQ quality control and assurance Chinese commercial PCBs |
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