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首页> 外文期刊>Canadian Journal of Pure and Applied Sciences >POLLUTANT AND HEAVY METAL RETENTION IN ASPHALTENES: ENVIRONMENTAL IMPLICATIONS
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POLLUTANT AND HEAVY METAL RETENTION IN ASPHALTENES: ENVIRONMENTAL IMPLICATIONS

机译：沥青中的污染物和重金属保留：对环境的影响

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摘要

Environmental sustainability depends on various factors, one of them being the suppression of potential metal contaminants from fossil fuel sources. According to the documented literature, research associated with the retention of toxic and heavy metals in the asphaltene residuum is limited. The aim of this study, therefore, was to explore the phenomena that govern metal retention in asphaltenes and examine the potential environmental outcomes. Asphaltene fractions were isolated from virgin crude oil, purified, digested and analysed for metal and toxic components using ICP- MS. The instrument was standardised with certified materials and adjusted for background and matrix effects according to standard protocol. A range of selected toxic elements were determined, including: Be, Al, Se, Ag, Cd, Sb, Pb and Bi. The elemental levels ranged between 2-1500 ppm in the asphaltene phase; and 1-100 ppm in crude oil. These concentrations are elevated and clearly represent a potential environmental hazard. Wide differences existed in metal levels between asphaltene and crude oil samples and suggested metal transfer to the asphaltene phase at the point of precipitation. The experimental data are discussed in terms of environmental impact and the prospect of remediation. Our work contributes to environmental sustainability and fuels research.
机译：环境的可持续性取决于多种因素，其中之一是抑制化石燃料来源中潜在的金属污染物。根据文献记载，有关在沥青质残渣中保留有毒和重金属的研究是有限的。因此，本研究的目的是探索支配沥青质中金属保留的现象，并研究潜在的环境结果。从原始原油中分离出沥青质馏分，纯化，消化并使用ICP-MS分析金属和有毒成分。该仪器使用经过认证的材料进行了标准化，并根据标准协议针对背景和基质效应进行了调整。确定了一系列选定的有毒元素，包括：Be，Al，Se，Ag，Cd，Sb，Pb和Bi。沥青质相中的元素含量在2-1500 ppm之间。在原油中为1-100 ppm。这些浓度升高，显然代表潜在的环境危害。沥青质和原油样品之间的金属含量存在很大差异，表明金属在沉淀点转移至沥青质相。从环境影响和修复前景的角度讨论了实验数据。我们的工作为环境可持续发展做出贡献，并推动了研究的发展。

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