| 窟野河流域水环境中芳烃类有机物的污染状况及风险评价 |
| Pollution Status and Risk Assessment of Aromatic Organic Compounds in Surface Waters of Kuye River Basin |
| 投稿时间：2022-11-08 修订日期：2023-02-13 |
| DOI：10.15928/j.1674-3075.202211080451 |
| 中文关键词:芳烃类有机物 分布特征 生态风险 窟野河流域 |
| 英文关键词:aromatic organic compounds spatial distribution ecological risk Kuye River basin |
| 基金项目:陕北国家能源化工基地煤化工废水无害化处理关键技术研究与示范（2019ZDLSF05-06）。 |
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| 中文摘要: |
| 为了解窟野河流域水体中芳烃类污染物的分布情况及其对环境造成的风险，本文对窟野河流域25个水样品中各类芳烃类有机物进行了检测分析，并对其进行了风险评价。结果表明，窟野河流域水体中共有15种芳烃类有机物被检测出，其中，酚类化合物占比93.4%，是主要的污染物，芳烃类有机物的主要来源是沿流域分布的众多煤化工企业以及沿流域分布的道路上机动车排放的尾气；窟野河流域水体中芳烃类有机污染物总浓度在100～5 162 μg/L之间，其中，2-4二硝基苯酚的浓度最高，平均值为1 601 μg/L，检出率为96%，荧蒽和乙苯的浓度最低，平均值仅为3 μg/L，检出率分别为100%和12%。用反距离权重法对芳烃类有机物的空间分布进行了预测，发现污染物浓度沿流域逐渐降低，且工业区浓度高于人群聚集区。通过毒性当量法和熵值法对5种芳烃类有机物进行了生态风险评价，结果显示5种芳烃类有机物均存在较高的生态风险，各点位不同有机物间的复合污染较高，应引起当地环保部门及相关企业足够的重视。 |
| 英文摘要: |
| Kuye River is a primary tributary of the Yellow River and has played an important role in the economic development of the Yellow River basin, especially in Shaanxi Province. However, coal mining activities along the Kuye River generates large quantities of aromatic organic pollutants, which have impacted regional surface waters and aquatic ecology. In this study, we analyzed the types and distribution of aromatic organic compounds in the surface waters of the Kuye River basin and evaluated the ecological risks. The aim of the study was to provide a scientific basis for the pollution control of aromatic organic compounds and ecological restoration of water bodies in the Kuye River basin. The study was based on the detection of various aromatic organic compounds in water samples collected at 25 sampling sites in July 2021. Fifteen kinds of aromatic organic compounds were detected in Kuye River basin waters and phenolic compounds accounted for 93.4% of the aromatic pollutants. The primary source of aromatic compounds was exhaust gas from the numerous coal based chemical enterprises along the rivers and motor vehicles. The total concentration of aromatic organic pollutants in surface waters ranged from 100 to 5 162 μg/L and the concentration of 2-4 dinitrophenol was highest, with an average value of 1 601 μg/L and a detection rate of 96%. The concentrations of fluoranthene and ethylbenzene were the lowest with an average value of 3 μg/L, and respective detection rates of 100% and 12%. The inverse distance weighting method was used to predict the spatial distribution of aromatic organic compounds. Pollutant concentrations decreased gradually down the river basin, and concentrations were higher in industrialized areas than in residential areas. The toxicity equivalent method and entropy method were used to evaluate the ecological risk of the aromatic organic compounds, and the results show that five kinds of aromatic organic compounds had high ecological risk. The risk posed by the combined pollution was high at each sampling site and should be attended to by local environmental protection agencies and related enterprises. |
| 唐 慧,张爱宁,杨壮壮,杨 璐,王 柱,刘永军.2024.窟野河流域水环境中芳烃类有机物的污染状况及风险评价[J].水生态学杂志,45(5):189-192. |
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