区域环境与生态
张雷,秦延文,郑丙辉,路瑞.松花江沉积物中硝基苯的分布特征[J].环境科学学报,2008,28(6):1227-1232
松花江沉积物中硝基苯的分布特征
- Study of concentrations of nitrobenzene in sediment samples from the Songhuajiang River
- 基金项目：国家重点基础研究发展规划(973)项目(No.2007CB407306)
- 作者
- 单位
- 张雷
- 中国环境科学研究院河流与海岸带环境创新基地, 北京 100012
- 秦延文
- 中国环境科学研究院河流与海岸带环境创新基地, 北京 100012
- 郑丙辉
- 中国环境科学研究院河流与海岸带环境创新基地, 北京 100012
- 路瑞
- 中国环境科学研究院河流与海岸带环境创新基地, 北京 100012
- 摘要：2006年1月通过对松花江全境沉积物的现场调查,研究了2005年11月13日松花江污染事故后硝基苯的沿程分布规律以及沉积物的粒度分布、有机质、铁/锰氧化物含量等地化性质.结果表明,松花江污染事故对松花江沉积物的影响有限,特征污染物硝基苯在松花江沉积物中的累积量不大,含量水平在几十个μg·kg-1之内.硝基苯主要累积在松花江上游吉林段,如吉化双苯厂东10号线以及东10号线入江口处的沉积物.东10号线与东10号线入江口沉积物中硝基苯含量分别达到932.9μg·kg-1、145.6μg·kg-1.此外,松花江沿程高有机质含量的泥质沉积物中硝基苯累积量较大,泥质沉积物多分布于松花江上游江段,硝基苯含量为20～50μg·kg-1,沙质沉积物硝基苯含量大多低于沉积物硝基苯分析方法检出限(10μg·kg-1).
- Abstract：A field study on the sediments from the main stream of the Songhuajiang River was performed in January 2006 to investigate the grain size,TOC,Fe/Mn ratio and nitrobenzene concentrations along the Songhuajiang River.The Songhuajiang nitrobenzene contamination accident had faint effect on the sediments of the Songhuajiang River and the enrichment of nitrobenzene was less than a few ppb in magnitude.Nitrobenzene mainly accumulated in the upper reaches of the Songhuajiang River,especially in the tenth canal of CNEP Jilin Chemical Co.and at the canal mouth discharging into the river where the nitrobenzene concentrations were 932.9μg·kg-1 and 145.6μg·kg-1,respectively.In addition,nitrobenzene was more prone to accumulate in muddy sediments with higher TOC contents than in sandy sediments.Most muddy sediments were distributed in the upper part of the Songhuajiang River and the levels of nitrobenzene were between 20 and 50μg·kg-1.The levels of nitrobenzene in sandy sediments were below the detection limit(10μg·kg-1).
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