The Risk of Polycyclic Aromatic Hydrocarbon in Surface Sediments of the Mekong River for Ecological and Human Health: Case Study of Vietnam.

IF 2.2 4区环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES

Bulletin of Environmental Contamination and Toxicology Pub Date : 2025-07-16 DOI:10.1007/s00128-025-04089-8

Thao Thanh Xuan Le, Linh Thi Nguyen, Long Duc Huynh, Uyen Thi Nguyen, Mai Thi Nguyen, Thanh Duy Nguyen, Ngo Dinh Vu, Tuan Minh Le, Thi Trang Luu, Tien Vinh Nguyen, Manh Van Do

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Abstract

This study investigated the distribution, sources, and ecological toxicity of polycyclic aromatic hydrocarbons (PAHs) in surface sediments along the Mekong River, from its entry into Vietnam to its outflow into the East Sea. The results showed that total PAH concentrations ranged from 53.66 to 1205.35 ng/g dry weight, with an average of 281.08 ± 391.13 ng/g dry weight. Among the 16 PAH compounds analysed, Pyrene (Pyr) and Fluoranthene (Flu) were detected in all sediment samples. Naphthalene (Nap) had the highest concentration among the detected PAHs. Diagnostic ratio and principal component analyses indicated that PAHs originated from mixed sources, including traffic emissions, coal and biomass combustion, petroleum leakage, and wastewater discharge. Based on the risk quotient (RQ), PAHs posed low to moderate ecological risks. Both adults and children in the study area may be exposed to cancer risks due to the presence of carcinogenic PAHs in sediment samples.

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湄公河表层沉积物中多环芳烃对生态和人类健康的风险：以越南为例。

研究了湄公河流域从流入越南到流入东海的表层沉积物中多环芳烃（PAHs）的分布、来源和生态毒性。结果表明，多环芳烃总浓度范围为53.66 ~ 1205.35 ng/g干重，平均为281.08±391.13 ng/g干重；在分析的16种多环芳烃化合物中，芘（Pyr）和氟蒽（Flu）在所有沉积物样本中都被检测到。在检测到的多环芳烃中，萘的浓度最高。诊断比和主成分分析表明，多环芳烃的来源混合，包括交通排放、煤炭和生物质燃烧、石油泄漏和废水排放。基于风险商（RQ），多环芳烃具有低至中等的生态风险。由于沉积物样本中存在致癌性多环芳烃，研究区域的成人和儿童都可能面临癌症风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Environmental Contamination and Toxicology 环境科学-毒理学

CiteScore

5.60

自引率

3.70%

发文量

230

审稿时长

1.7 months

期刊介绍： The Bulletin of Environmental Contamination and Toxicology(BECT) is a peer-reviewed journal that offers rapid review and publication. Accepted submissions will be presented as clear, concise reports of current research for a readership concerned with environmental contamination and toxicology. Scientific quality and clarity are paramount.