测定水基质中美国环保局优先考虑的 16 种多环芳烃中的 11 种的萃取方法的效率比较：来源和生态风险评估。

IF 3 4区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Integrated Environmental Assessment and Management Pub Date : 2024-02-15 DOI:10.1002/ieam.4904

Sinayo Ndwabu, Mncedisi Malungana, Precious Mahlambi

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引用次数: 0

摘要

由于多环芳烃 (PAH) 的毒性、易分析性和环境发生率，16 种多环芳烃 (PAH) 被美国环保局选为优先污染物。在南非，尤其是夸祖鲁-纳塔尔省，很少有研究对多环芳烃的含量进行评估，而且在选定的研究区域也没有开展任何工作。因此，本研究旨在评估河水和废水样本中此类 PAHs 的含量，并评估其来源和生态风险。这些多环芳烃在南非环境中的状况尚未得到充分调查，本研究旨在填补这一空白。多环芳烃采用固相萃取 (SPE) 和分散液液微萃取 (DLLME) 方法进行测定。对这些方法的优化和验证表明，这两种方法都可用于提取液体样品中的多环芳烃。这是因为 SPE 和 DLLME 的回收率分别为 72.1%-118%和 70.7%-88.4%，RSD 均小于 10%（表明精度高）。SPE 的检出限和定量限分别为 5.0 至 18 纳克/升和 6.0 至 20 纳克/升，DLLME 的检出限和定量限分别为 10 至 44 纳克/升和 11 至 63 纳克/升。这些结果表明，SPE 比 DLLME 更准确、更灵敏，统计分析也证实了这一点。河水样本中的多环芳烃浓度水平从未检测到 1046 纳克/升，废水样本中的多环芳烃浓度水平从未检测到 778 纳克/升。研究发现，多环芳烃来源于石油，平均生态风险较低。Integr Environ Assess Manag 2024;00:1-13。© 2024 作者。综合环境评估与管理》由 Wiley Periodicals LLC 代表环境毒理学与化学学会 (SETAC) 出版。

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Efficiency comparison of extraction methods for the determination of 11 of the 16 USEPA priority polycyclic aromatic hydrocarbons in water matrices: Sources of origin and ecological risk assessment

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Efficiency comparison of extraction methods for the determination of 11 of the 16 USEPA priority polycyclic aromatic hydrocarbons in water matrices: Sources of origin and ecological risk assessment

As a result of their toxicity, ease of analysis, and environmental occurrence, 16 polycyclic aromatic hydrocarbons (PAHs) were chosen as priority pollutants by the USEPA. Few studies have been conducted to assess the levels of PAHs in South Africa, especially KwaZulu Natal province, and no work has been done in the selected study area. Therefore, this study aimed to evaluate the levels of such PAHs in river water and wastewater samples and evaluate their source and ecological risk. The status of these PAHs in the South African environment has not been investigated fully, which is a gap this study intended to fill. The PAHs were determined using solid-phase extraction (SPE) and dispersive liquid–liquid microextraction (DLLME) methods. The optimization and validation of these methods indicated that both methods can be used for the extraction of PAHs in liquid samples. This is because of the acceptable %recovery of 72.1%–118% for SPE and 70.7%–88.4% for DLLME with a %RSD less than 10% (indicating high precision) that was obtained. The limit of detection and limit of quantification ranged from 5.0 to 18 ng/L and 6.0–20 ng/L for SPE and from 10 to 44 ng/L and 11 to 63 ng/L for DLLME. These results demonstrated that SPE is more accurate and sensitive than DLLME, which was also confirmed by statistical analysis. The PAH concentration levels ranged from not detected (nd) to 1046 ng/L in river water and nd to 778 ng/L in wastewater samples with naphthalene demonstrating dominance over all other PAHs in both water matrices. The PAHs were found to be of petrogenic origin and posed low ecological risk on average. Integr Environ Assess Manag 2024;20:1598–1610. © 2024 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

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来源期刊

Integrated Environmental Assessment and Management ENVIRONMENTAL SCIENCESTOXICOLOGY&nbs-TOXICOLOGY

CiteScore

5.90

自引率

6.50%

发文量

156

期刊介绍： Integrated Environmental Assessment and Management (IEAM) publishes the science underpinning environmental decision making and problem solving. Papers submitted to IEAM must link science and technical innovations to vexing regional or global environmental issues in one or more of the following core areas: Science-informed regulation, policy, and decision making Health and ecological risk and impact assessment Restoration and management of damaged ecosystems Sustaining ecosystems Managing large-scale environmental change Papers published in these broad fields of study are connected by an array of interdisciplinary engineering, management, and scientific themes, which collectively reflect the interconnectedness of the scientific, social, and environmental challenges facing our modern global society: Methods for environmental quality assessment; forecasting across a number of ecosystem uses and challenges (systems-based, cost-benefit, ecosystem services, etc.); measuring or predicting ecosystem change and adaptation Approaches that connect policy and management tools; harmonize national and international environmental regulation; merge human well-being with ecological management; develop and sustain the function of ecosystems; conceptualize, model and apply concepts of spatial and regional sustainability Assessment and management frameworks that incorporate conservation, life cycle, restoration, and sustainability; considerations for climate-induced adaptation, change and consequences, and vulnerability Environmental management applications using risk-based approaches; considerations for protecting and fostering biodiversity, as well as enhancement or protection of ecosystem services and resiliency.