作者：吴启航1,2, 麦碧娴2
作者单位：1. 广州大学环境工程系, 广东广州 510405;
2. 中国科学院广州地球化学研究所有机地球化学国家重点实验室, 广东广州 510640
关键词：多环芳烃(PAHs); 沉积物
摘要：
将珠江广州河段沉积物分为5个粒度,每个粒级的样品进行重液分离,收集轻组分和重组分。采用气-质联用仪对其中的多环芳烃(PAHs)进行定量分析,运用元素分析仪测定其中的总有机碳(TOC)和碳黑(BC),表明TOC和BC的含量与多环芳烃的富集能力没有明显的相关性。
GC-MS and EA determination of sediments
WU Qi-hang1,2, MAI Bi-xian2
1. Department of Environmental Engineering, Guangzhou University, Guangzhou 510405, China;
2. State Key Laboratory of Organic Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
Abstract: Wet sieving was performed to separate the sediment into five size fractions and further separated into low (<1.8 g cm3) and high (>1.8 g cm3)density fractions using a cesium chloride solution having a specific gravity of 1.8±0.05 g cm3. Each of these size and density fractions were then analyzed for PAHs with GC-MS. And analyzed for TOC and black carbon with EA, The results also show that the PAHs concentration in organic geosorbents is not significantly correlated with the TOC and black carbon content.
Keywords: Polycyclic aromatic hydrocarbons; Sediment
2005, 31(1): 113-115 收稿日期: 2004-5-20;收到修改稿日期: 2004-8-15
基金项目: 国家自然科学基金(40272129);广东省自然科学基金(010504)
作者简介: 吴启航(1977-),男,助教,主要从事环境科学研究。
参考文献
[1] Luthy R G, Aiken G R, Cunninghah SD, et al. Sequestration of hydrophobic organic contaminants by geosorbents[J]. Environ Sci Te ch nol, 1997, 31:3341-3347.
[2] Weber J R, Leboeuf T, Huang W. Contaminant interactions with ge osorbent organic matter:Insights drawn from polymer sciences[J]. Wat Res, 2001, 35:853-868.
[3] Rockne K J, Shor L M, Young, LY, et al. Distributed sequestration and release of PAHs in weathered sediment:The role of sediment structure and organic carbon properties[J]. Environ Sci Technol, 2002, 36:2636-2644.
[4] Ghosh U, Gillette J S, Luthy RG, et al. Microscale location, characterization and association of poly cyclic aromatic hy drocarbons on habor sediment particles[J]. Environ Sci Te chnol, 2000, 34:1729-1736.
[5] 麦碧娴, 林峥, 张干, 等.珠江三角洲地区河流和珠江口表层沉积物中有机污染物研究-多环芳烃和有机氯农药的分布特征[J].环境科学学报, 2000, 20(2):192-197.
[6] Mai Bi-xian, Lin Zheng, Zhang Gan, et al. Organic contaminants in surface sediments from rivers of the Pearl River Delta and Estuary-The Distributions and characteristics of PAHs and organochlorine pesticides[J]. Acta Scientiae Circumstantiae, 2000, 20(2):192-197(in Chinese with English Abstract).
[7] Kubiki J D, Apitz SE.Models of natural organic matter and interactions with organic contaminants[J]. Org Geochem, 1999, 30:911-927.
