Soil pollution of the Labin city area with polycyclic aromatic hydrocarbons derived from Raša coal mining and associated industries

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2022-01-01 DOI:10.17794/rgn.2022.1.12

I. Jakovljević, Ivona Mešić, G. Pehnec

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引用次数: 3

Abstract

The aim of this study was to determine the mass fraction of polycyclic aromatic hydrocarbons (PAHs) in the soil of the Labin city area (west Croatia) as a consequence of the pollution caused by centuries old Raša coal mining and associated metal processing and foundry industries. Samples of topsoil down to 10-cm depth, following the removal of plant cover, were collected, air-dried, and sieved to <2 mm. Afterwards, they were extracted, and PAH levels were measured by high performance liquid chromatography using a fluorescence detector with a varying wavelength of excitation and emission (HPLC/FLD). The results showed substantially elevated levels of PAHs across the study area. The soil pollution with PAHs increased in the direction towards the Raša Bay, where a former coal separation unit was in operation decades ago. The results demonstrated the presence of pyrolitic PAHs that resulted from Raša coal combustion at high temperatures in power plants, and unburnt coal-derived PAHs formed by Raša coal carbonization. This paper for the first time reports levels of PAHs in soil of the Labin city area, establishing them as higher than the values set by Croatian legislation. Therefore, this study clearly calls for immediate clean-up measures in order to solve the environmental pollution issue of the vulnerable local karst area.

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Raša煤矿开采及相关工业产生的多环芳烃对拉宾城区土壤的污染

这项研究的目的是确定拉宾城市地区(西克罗地亚)土壤中多环芳烃(PAHs)的质量分数，这是数百年来Raša煤炭开采和相关金属加工和铸造工业造成污染的结果。除去植物覆盖物后，收集10厘米深度的表土样本，风干，并筛选至小于2毫米。提取后，采用不同激发和发射波长荧光检测器(HPLC/FLD)高效液相色谱法测定多环芳烃水平。结果显示，整个研究区域的多环芳烃含量显著升高。多环芳烃的土壤污染在Raša湾方向增加，那里几十年前曾有一个煤分离装置在运行。结果表明，电厂高温下Raša煤燃烧产生的火成岩多环芳烃和Raša煤炭化产生的未燃烧煤源多环芳烃存在。本文首次报道了拉宾市地区土壤中多环芳烃的含量，确定其高于克罗地亚立法规定的值。因此，本研究明确要求立即采取清理措施，以解决当地喀斯特脆弱地区的环境污染问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.