意大利冰川冰上碎屑中的微量元素和有机卤素化合物污染。

IF 3.7 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Marco Parolini, Arianna Crosta, Beatrice De Felice, Viviana Minolfi, Francesca Pittino, Riccardo Scotti, Giulia Liguori, Jan Pachner, Andrea Franzetti, Roberto Ambrosini
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引用次数: 0

摘要

冰川代表着独特的和受到威胁的生态系统,这些生态系统已经积累并继续接收由过去和正在进行的人类活动释放的各种潜在有毒的环境污染物。由于气候变暖,冰川的加速消融和退缩可能会改变被困在冰层内或表面的污染物的命运,导致通过融水释放的污染物增加。因此,监测冰川污染物对于评估前冰期生态系统的潜在风险至关重要。本研究旨在调查来自意大利16个冰川的冰上碎屑中有机和无机污染物的存在和分布。研究了从15个高山冰川和唯一现存的亚平宁冰川收集的碎屑中有机卤素化合物,特别是有机氯(即滴滴涕同系物、六氯环己烷异构体、六氯环己烷和多氯联苯)和多溴二苯醚(即多溴二苯醚)以及微量元素(即Al、As、Cd、Co、Cr、Cu、Fe、Hg、Mn、Mo、Ni、Pb、Sr、Ti、Va和Zn)的含量。所有冰川的冰上碎屑都含有可测量浓度的微量元素,而有机卤素化合物仅在某些冰川中以可测量浓度检测到。铁(平均±标准差:22,781.46±10,849.73 mg/Kg干重)、铝(10,417.71±6,019.36 mg/Kg d.w.)和锰(312.52±167.78 d.w.)是主要微量元素,但在所有冰川碎屑中均检测到镉(0.23±0.31 d.w.)、汞(0.16±0.12 d.w.)和铅(84.32±110.04 d.w.)等有毒金属的可测浓度。DDT同系物(平均±标准差:0.006±0.009 mg/Kg d.w)、多氯联苯(0.003±0.004 d.w)和六氯环己烷(0.0009±0.0005 d.w)在不到75%的被调查冰川中被测量到,而六氯环己烷异构体和多溴二苯醚从未被测量到。总的来说,在冰川中观察到所有被调查的污染物的水平有很大的变化,这表明它们的来源可能取决于大气运输,但也取决于当地的污染源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Trace Element and Organohalogen Compound Contamination in the Supraglacial Debris of Italian Glaciers.

Glaciers represent unique and threatened ecosystems, which have accumulated and continue receiving diverse, potentially toxic, and environmental contaminants released by past and ongoing anthropic activities. The accelerated ablation and retreat of glaciers due to climate warming can consequently alter the fate of contaminants trapped within their ice or on their surface, leading to increased contaminant release through meltwaters. Thus, the monitoring of glacier contaminants is crucial for assessing the potential risk for proglacial ecosystems. The present study aimed at investigating the presence and distribution of organic and inorganic contaminants in supraglacial debris from sixteen Italian glaciers. The levels of organohalogen compounds, specifically organochlorine (i.e., DDT homologues, HCH isomers, HCB, and PCBs) and polybrominated diphenyl ethers (i.e., PBDEs), and trace elements (i.e., Al, As, Cd, Co, Cr, Cu, Fe, Hg, Mn, Mo, Ni, Pb, Sr, Ti, Va, and Zn) were investigated in the debris collected from fifteen Alpine glaciers and the only existing Apenninic glacieret. The supraglacial debris of all glaciers contained measurable concentrations of trace elements, while organohalogen compounds were detected at measurable concentrations only in certain glaciers. Fe (mean ± standard deviation: 22,781.46 ± 10,849.73 mg/Kg dry weight), Al (10,417.71 ± 6,019.36 mg/Kg d.w.), and Mn (312.52 ± 167.78 d.w.) were the predominant trace elements, but measurable concentrations of toxic metals such as Cd (0.23 ± 0.31 d.w.), Hg (0.16 ± 0.12 d.w.), and Pb (84.32 ± 110.04 d.w.) were detected in the debris of all glaciers. The DDT homologues (mean ± standard deviation: 0.006 ± 0.009 mg/Kg d.w.), PCBs (0.003 ± 0.004 d.w.), and HCB (0.0009 ± 0.0005 d.w.) were measured in less than the 75% of investigated glaciers, while HCH isomers and PBDEs were never measured. Overall, a wide variability in the levels of all the investigated contaminants was observed among glaciers, suggesting that their origin could depend on atmospheric transport but also local sources of contamination.

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来源期刊
CiteScore
7.00
自引率
2.50%
发文量
63
审稿时长
8-16 weeks
期刊介绍: Archives of Environmental Contamination and Toxicology provides a place for the publication of timely, detailed, and definitive scientific studies pertaining to the source, transport, fate and / or effects of contaminants in the environment. The journal will consider submissions dealing with new analytical and toxicological techniques that advance our understanding of the source, transport, fate and / or effects of contaminants in the environment. AECT will now consider mini-reviews (where length including references is less than 5,000 words), which highlight case studies, a geographic topic of interest, or a timely subject of debate. AECT will also consider Special Issues on subjects of broad interest. The journal strongly encourages authors to ensure that their submission places a strong emphasis on ecosystem processes; submissions limited to technical aspects of such areas as toxicity testing for single chemicals, wastewater effluent characterization, human occupation exposure, or agricultural phytotoxicity are unlikely to be considered.
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