巽他班红树林沉积物的 210Pb 定年和中子活化分析:沉积速率和金属污染史

IF 1.4 3区 化学 Q4 CHEMISTRY, INORGANIC & NUCLEAR
Mohammad Amirul Islam, Shaiful Kabir, Ali Arman, Untung Sugiharto, M. Moinul Islam, Mohammad Belal Hossen
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引用次数: 0

摘要

本研究采用阿尔法光谱法和中子活化分析来评估巽他班红树林沉积物的质量累积率、污染历史和生态风险。利用 210Pb 测定法首次测定了该地区沉积物的质量累积率,其范围为 0.068 至 3.20 kg m-2 y-1,平均为 0.61 kg m-2 y-1。对 11 种金属(Al、Ca、V、Cr、Fe、Ni、Cu、Zn、As、Hg 和 Pb)的污染历史进行了评估。不同的环境污染指数表明,圣达班红树林沉积物受到砷的污染。根据不同的沉积物质量标准,铬、镍和砷偶尔会对海洋生物造成不利的生物影响。应用多元统计方法阐明了所研究的金属(loid)在红树林生态系统中的来源和迁移行为,表明金属(loid)污染源既有人为的,也有地质的。这项研究的结果应能提高人们对金属污染和生物群生态风险的认识,从而制定新的策略和扩大管理实践,拯救敏感的红树林生态系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
210Pb dating and neutron activation analysis of the Sundarban mangrove sediments: sedimentation rate and metal contamination history
In this study, alpha spectrometry and neutron activation analysis were applied to assess the mass accumulation rate, contamination history, and ecological risk of the Sundarban mangrove sediments. The mass accumulation rates of sediments using 210Pb dating determined for the first time in this area ranged from 0.068 to 3.20 kg m−2 y−1, with an average of 0.61 kg m−2 y−1. The contamination history of 11 metal(loid)s (Al, Ca, V, Cr, Fe, Ni, Cu, Zn, As, Hg, and Pb) was assessed. Different environmental contamination indices suggested that Sundarban mangrove sediments were contaminated by As. Considering different sediment quality guidelines, it was observed that Cr, Ni, and As posed occasional adverse biological effects on marine organisms. Multivariate statistical approaches were applied to elucidate the origin and transport behavior of the studied metal(loid)s in the mangrove ecosystem which suggested that sources of metal(loid) pollution were both anthropogenic and geogenic. The results from this study should improve the knowledge of metal contamination and ecological risk to biota to develop new strategies and enlarge management practices to save sensitive mangrove ecosystems.
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来源期刊
Radiochimica Acta
Radiochimica Acta 化学-核科学技术
CiteScore
2.90
自引率
16.70%
发文量
78
审稿时长
6 months
期刊介绍: Radiochimica Acta publishes manuscripts encompassing chemical aspects of nuclear science and technology.
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