生态环境学报 ›› 2023, Vol. 32 ›› Issue (11): 1952-1963.DOI: 10.16258/j.cnki.1674-5906.2023.11.006

• 研究论文 • 上一篇    下一篇

京津冀地区工业区土壤中多环芳烃的污染特征、源解析及生物因子相关性

许明(), 张馥颖, 孙露露, 周增幸, 林超霸, 朱雪竹*()   

  1. 南京农业大学资源与环境科学学院,江苏 南京 210095
  • 收稿日期:2022-03-24 出版日期:2023-11-18 发布日期:2024-01-17
  • 通讯作者: * 朱雪竹。E-mail: zhuxuezhu@njau.edu.cn
  • 作者简介:许明(1996年生),男,硕士研究生,研究方向为环境污染控制与生物修复研究。E-mail: 3220225213@bit.edu.cn
  • 基金资助:
    国家重点研发计划项目(2019YFC1804301)

Pollution Characteristics, Source Analysis and Correlation of Biological Factors of Polycyclic Aromatic Hydrocarbons in Soils of Industrial Areas in Beijing-Tianjin-Hebei Region

XU Ming(), ZHANG Fuying, SUN Lulu, ZHOU Zengxing, LIN Chaoba, ZHU Xuezhu*()   

  1. School of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, P. R. China
  • Received:2022-03-24 Online:2023-11-18 Published:2024-01-17

摘要:

调查京津冀地区工业土壤污染的状况及其与土壤生物因子的相互关系,为后续环境监测及修复提供参考。在京津冀地区代表性工业园区采集土壤样品,分析其中半挥发有机污染和土壤生物状况。土壤采集点周边的工业产业涵盖了金属冶炼及压延加工业,石油加工业、炼焦及核燃料加工业,交通运输设备制造业,化学原料及化学制品制造业等北方地区典型重工业产业。结果表明,芘(Pyrene,Pyr)、荧蒽(Fluoranthene,Flu)、邻苯二甲酸二(2-二乙基己基)酯(Bis(2-diethylhexyl) Phthalate,DEHP)检出排名前3,分别有98.4%、98.4%、96.9%的点位浓度高于检出限,其最高质量分数分别为2.84、2.79、5.72 mg∙kg−1。土壤中多环芳烃(Polycyclic Aromatic Hydrocarbons,PAHs)以4-6环PAHs为主,∑16PAHs质量分数中位值为0.67 mg∙kg−1,约有90.6%的样品中苯并[a]芘(Benzo[a]pyrene,BaP)的浓度高于检出限。荧蒽、芘、苯并[a]蒽(Benzo[a]anthracene,BaA)、䓛(Chrysene,Chr)、苯并[b]荧蒽(Benzo[b]fluoranthene,BbF)、苯并[k]荧蒽(Benzo[k]fluoranthene,BkF)、BaP对土壤中PAHs污染方差的贡献率高达52.9%。结合特征比值法与主成分分析法得出液体化石燃料燃烧产生的PAHs占土壤PAHs来源的79.7%。微生物量碳(Microbial Biomass Carbon,MBC)、微生物量氮(Microbial Biomass Nitrogen,MBN)在0-20 cm处与2-3环和∑16PAHs呈显著负相关(r= 0.4,P=0.023),在20-40 cm土壤中蔗糖酶活性与LMW-PAHs(r=0.51,P=0.006)和HMW-PAHs(r=0.53,P=0.005)呈显著正相关。研究成果可为评估土壤有机污染环境归趋提供依据。

关键词: 京津冀, 产业类型, 土壤有机污染, PAHs源解析, 生物因子

Abstract:

In order to investigate the pollution of industrial soils and its relationship with soil biological factors, and to provide a reference for subsequent environmental monitoring and remediation. Soil samples were collected from the representative industrial parks in Beijing-Tianjin-Hebei region to analyze the semi-volatile organic pollution and soil biological factor activity. The industries around the soil sample sites included metal smelting and rolling processing industry, petroleum processing, coking and nuclear fuel processing industry, transportation equipment manufacturing industry, chemical raw material and chemical product manufacturing industry, which are four typical heavy industries in northern China. The results showed that the detection rates of pyrene (Pyr), fluoranthene (Flu), and bis (2-diethylhexyl) phthalate (DEHP) were the top three among the semi-volatile organic pollutants, with the detection rates of 98.4%, 98.4%, and 96.9%, and the maximum mass fractions were 2.84, 2.79 and 5.72 mg∙kg−1, respectively. PAHs with 4‒6 rings were the popular PAHs, and the detection rate of benzo(a)pyrene (BaP), a type of carcinogen, was 90.6%. The median mass fraction of ∑16PAHs was 0.67 mg∙kg−1. The variance contribution rate of Flu, Pyr, benzo[a]anthracene (BaA), chrysene (Chr), benzo[b]fluoranthene (BbF), benzo[k]fluoranthene (BkF) and BaP to PAHs pollution in soils was 52.9%. According to the results of the characteristic ratio method and the principal component analysis, the PAHs produced by combustion of liquid fossil fuels accounted for 79.7% of the source of soil PAHs. Microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN) were significantly and negatively correlated with the concentrations of PAHs with 2‒3 rings and ∑16PAHs in soils with depth at 0‒20 cm (r=−0.4, P=0.023). The activity of invertase was significantly and negatively correlated with the concentrations of LMW PAHs (r=0.51,P=0.006), HMW PAHs (r=0.53, P=0.005) in 20‒40 cm soils. These results would provide a basis for evaluating the environmental fate of soil organic pollution.

Key words: Beijing-Tianjin-Hebei, industry types, soil organic pollution, PAHs source analysis, biological factors

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