The Concentration Characteristics and Sources of Polycyclic Aromatic Hydrocarbons and Its Ecological Risk Assessment in Landscape Water of Wuhu, China

doi:10.13870/j.cnki.stbcxb.2018.02.047

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The Concentration Characteristics and Sources of Polycyclic Aromatic Hydrocarbons and Its Ecological Risk Assessment in Landscape Water of Wuhu, China

更新时间：2025-03-12

- The Concentration Characteristics and Sources of Polycyclic Aromatic Hydrocarbons and Its Ecological Risk Assessment in Landscape Water of Wuhu, China
- Vol. 32, Issue 2, Pages: 321-328(2018)
- 作者机构：
  
  安徽自然灾害过程与防控研究省级重点实验室，安徽师范大学国土资源与旅游学院,安徽,芜湖,241003
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2018.02.047
  CLC： X524
- Published：2018
- 稿件说明：
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The Concentration Characteristics and Sources of Polycyclic Aromatic Hydrocarbons and Its Ecological Risk Assessment in Landscape Water of Wuhu, China[J]. 2018, 32(2): 321-328.
DOI：

The Concentration Characteristics and Sources of Polycyclic Aromatic Hydrocarbons and Its Ecological Risk Assessment in Landscape Water of Wuhu, China[J]. 2018, 32(2): 321-328. DOI： 10.13870/j.cnki.stbcxb.2018.02.047.

摘要

通过试验研究了芜湖市景观水体多环芳烃（PAHs）的污染状况。采集芜湖市主城区29个景观水体沉积相、水相和悬浮颗粒相样品，运用气相色谱—质谱联用仪（GC—MS）测定样品中16种PAHs的浓度，分析PAHs的含量分布特征及其与有机碳、黑碳的相关性，利用特征比值法、正定矩阵因子分解法（PMF）对样品中PAHs进行来源解析，并通过效应区间值法和风险熵值法进行生态风险评价。结果表明：PAHs的浓度范围在沉积相中为43.48～6 388.40 ng/g，水相中为0.08～52.23 ng/L，悬浮颗粒相中为2.46～60.46 ng/L，平均含量分别为1 307.47 ng/g，8.60，13.71 ng/L。样品中PAHs与有机碳（TOC）、黑碳（BC）的相关性明显，尤其是中高环PAHs，且与湿化学氧化法（BCCr）的相关性最为显著。来源解析表明芜湖市景观水体PAHs主要来源于木材等生物质燃烧和煤炭燃烧，部分来源于石油类物质燃烧，其中PMF表明生物质燃烧贡献率为50.66%(沉积相)和52.51%(悬浮颗粒相加水相)。生态风险评价结果显示芜湖市景观水体整体处于中等污染水平，研究结果可为城市水体污染的治理提供科学依据。

Abstract

The sedimentary

aqueous phase and suspended particles were collected from 29 landscape waters in the main urban area of Wuhu. The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) in the samples were measured. The concentration distribution characteristics of PAHs and the correlation with organic carbon (TOC) and black carbon (BC) were also studied. The characteristic ratio method and PMF were used to analyze the source of PAHs in the samples. Effect internal method and risk entropy method were applied to evaluate the ecological risk. The results showed that the PAHs concentrations in sedimentary

aqueous phase and suspended particles

ranged from 43.48 to 6 388.40 ng/g

from 0.08 to 52.23 ng/L

and from 2.46 to 60.46 ng/L

respectively

with the average concentration of 1 307.47 ng/g

8.60 ng/L

13.71 ng/L respectively. The correlations between PAHs and TOC and BC were evident

especially in middle and high molecular homologues

and the correlation with BCCr was the most significant. The PAHs of landscape water in Wuhu came mainly from biomass and coal combustion

and partly from the combustion of petroleum substances and oil pollution. The PMF revealed that biomass combustion reached up to 50.66% for sedimentary and 52.51% for suspended particles and aqueous phase. The ecological risk assessment showed that the landscape water in Wuhu was in the middle pollution level

which should be taken seriously. These findings provided the scientific basis for the management of urban water pollution.

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