Toward Global Sediment Management: Lessons Learned From a Multidimensional Risk Assessment

IF 1.5 4区 环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES
Dunja Rađenović, Nataša Slijepčević, Tanja Tomić, Slaven Tenodi, Dejan Krčmar, Jelena Beljin, Dragana Tomašević Pilipović
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Abstract

Sediment from the Serbian Great Bačka Canal (GBC), which has long been classified as toxic waste due to high pollutant concentrations, exemplifies the sediment management challenges in Europe, where regulations vary by country. Serbian legislation primarily focuses on total metal concentrations relative to prescribed limits. Our study addresses this limitation by using an integrated approach to assess sediment pollution's detrimental effects at the ecosystem level. This approach is particularly relevant for the GBC, an environmental hotspot historically impacted by severe pollution from untreated industrial wastewater and population growth. Although previous research on the GBC has predominantly focused on chemical analyses, often overlooking broader environmental and health impacts, our study aims to evaluate whether ecotoxicological tests provide a more comprehensive assessment of sediment quality compared to traditional methods. Although only copper concentrations surpassed national limits, multiple metals and polycyclic aromatic hydrocarbons (PAHs) exceeded international sediment quality guidelines (SQGs). Sequential extraction revealed that 50% of copper was immobilized in the residual fraction, and ecotoxicological tests with Myriophyllum aquaticum indicated potential toxicity. Human health risk assessments showed a low risk of carcinogenic effects from PAHs, but a higher risk associated with zinc and copper. These findings highlight the urgent need for pollution reduction and ecological restoration in the GBC and similar river systems.

Abstract Image

迈向全球沉积物管理:从多维风险评估中吸取的教训
由于污染物浓度高,塞尔维亚大巴卡运河(GBC)的沉积物长期以来一直被归类为有毒废物,这是欧洲沉积物管理挑战的例证,欧洲各国的规定各不相同。塞尔维亚立法主要侧重于相对于规定限度的总金属浓度。我们的研究通过使用一种综合方法来评估沉积物污染在生态系统水平上的有害影响,从而解决了这一限制。这种方法尤其适用于GBC,这是一个历史上受到未经处理的工业废水和人口增长严重污染影响的环境热点。虽然以前对GBC的研究主要集中在化学分析上,往往忽视了更广泛的环境和健康影响,但我们的研究旨在评估生态毒理学测试是否比传统方法更全面地评估沉积物质量。虽然只有铜的浓度超过了国家限制,但多种金属和多环芳烃(PAHs)超过了国际沉积物质量准则(SQGs)。连续提取表明,残余部分固定了50%的铜,生态毒理学试验表明水生肉豆杉具有潜在的毒性。人类健康风险评估显示,多环芳烃致癌风险较低,但锌和铜的致癌风险较高。这些发现强调了在GBC和类似的河流系统中减少污染和生态恢复的迫切需要。
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来源期刊
Clean-soil Air Water
Clean-soil Air Water 环境科学-海洋与淡水生物学
CiteScore
2.80
自引率
5.90%
发文量
88
审稿时长
3.6 months
期刊介绍: CLEAN covers all aspects of Sustainability and Environmental Safety. The journal focuses on organ/human--environment interactions giving interdisciplinary insights on a broad range of topics including air pollution, waste management, the water cycle, and environmental conservation. With a 2019 Journal Impact Factor of 1.603 (Journal Citation Reports (Clarivate Analytics, 2020), the journal publishes an attractive mixture of peer-reviewed scientific reviews, research papers, and short communications. Papers dealing with environmental sustainability issues from such fields as agriculture, biological sciences, energy, food sciences, geography, geology, meteorology, nutrition, soil and water sciences, etc., are welcome.
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