黑海沿岸城市的污染:城市土壤、道路灰尘及其 PM10 分馏物中的潜在有毒元素

IF 2.8 3区 农林科学 Q3 ENVIRONMENTAL SCIENCES
Liliya Bezberdaya, Olga Chernitsova, Mikhail Lychagin, Elena Aseeva, Anna Tkachenko, Nikolay Kasimov
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引用次数: 0

摘要

目的本研究旨在评估克里米亚半岛海滨度假城市雅尔塔的城市土壤、道路尘埃及其 PM10 颗粒中潜在有毒元素 (PTE) 的累积水平、空间分布和来源,如锌、砷、镉、铅、铬、钴、镍、铜、锑、钼、钒、钨、锶、锰、铋、锡、铁、铯、铍和钡。材料和方法采用 ICP-MS 和 ICP-AES 方法测量了城市表土(0-10 厘米)、道路尘埃及其直径为 10 微米的细颗粒(PM10)中 PTE 的浓度。土壤和道路尘埃样本于 2018 年在雅尔塔各功能区和不同类型的道路上采集。总共采集了 69 份土壤样本和 57 份道路灰尘样本。根据斯托克斯定律,采用沉降法分离出 PM10 部分。结果与讨论城市土壤和道路灰尘受到铅、锑、锌、锡、镉、铜、铋、钼和锰的污染。从城市土壤和道路灰尘中分离出来的较细颗粒(PM10)比大块样本显示出更高的 PTE 累积量。在大块土壤和道路灰尘样本中,PM10 部分占污染物总量的 50-80%。城市土壤污染最严重的地方是居民区,而道路扬尘污染主要集中在主要高速公路上。PTEs 的其他重要来源是土壤母质和土壤颗粒的再悬浮。散装土壤和道路灰尘样本中的 PTE 含量与低度和中度污染水平相对应。PM10 部分中的 PTE 含量升高对环境造成的危害最大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Pollution of a Black Sea coastal city: potentially toxic elements in urban soils, road dust, and their PM10 fractions

Pollution of a Black Sea coastal city: potentially toxic elements in urban soils, road dust, and their PM10 fractions

Purpose

The study aimed to assess the accumulation levels, spatial distribution, and sources of the potentially toxic elements (PTEs), such as Zn, As, Cd, Pb, Cr, Co, Ni, Cu, Sb, Mo, V, W, Sr, Mn, Bi, Sn, Fe, Cs, Be, and Ba, in urban soils, road dust and their PM10 fractions in Yalta, a seaside resort town of the Crimean Peninsula.

Materials and methods

The concentrations of the PTEs were measured in the urban topsoil (0–10 cm), road dust, and their fine particles, < 10 μm in diameter (PM10), using ICP-MS and ICP-AES methods. The soil and road dust samples were collected in 2018 in various functional zones of Yalta and on different types of roads. In total, 69 soil samples and 57 road-dust samples were taken. The PM10 fraction was isolated by sedimentation method according to Stokes' law.

Results and discussion

The urban soils and the road dust were contaminated by Pb, Sb, Zn, Sn, Cd, Cu, Bi, Mo, and Mn. The finer particles (PM10) separated from the urban soils and the road dust showed higher accumulation of the PTEs than the bulk samples. The contribution of the PM10 fraction to the total amount of the pollutants in the bulk soil and road-dust samples accounted for 50–80%. The strongest contamination of the urban soils was found in the residential areas, while the road dust was mostly contaminated on the major highways.

Conclusion

According to the results of the principal component analysis, most of the pollutants can be attributed to anthropogenic sources − non-exhaust and exhaust vehicle emissions. The other important sources of the PTEs are soil parent materials and the resuspension of soil particles. The contents of PTEs in the bulk soil and road-dust samples correspond to low and medium pollution levels. The elevated levels of the PTEs in the PM10 fraction pose the greatest environmental hazard.

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来源期刊
Journal of Soils and Sediments
Journal of Soils and Sediments 环境科学-土壤科学
CiteScore
7.00
自引率
5.60%
发文量
256
审稿时长
3.5 months
期刊介绍: The Journal of Soils and Sediments (JSS) is devoted to soils and sediments; it deals with contaminated, intact and disturbed soils and sediments. JSS explores both the common aspects and the differences between these two environmental compartments. Inter-linkages at the catchment scale and with the Earth’s system (inter-compartment) are an important topic in JSS. The range of research coverage includes the effects of disturbances and contamination; research, strategies and technologies for prediction, prevention, and protection; identification and characterization; treatment, remediation and reuse; risk assessment and management; creation and implementation of quality standards; international regulation and legislation.
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