菲律宾吕宋岛中部赞巴勒斯省圣克鲁斯市阿林索格河沉积物中的金属浓度。

IF 2.4 Q1 Medicine Journal of Health and Pollution Pub Date : 2020-08-25 eCollection Date: 2020-09-01 DOI:10.5696/2156-9614-10.27.200914
Rowena R Sazon, Veronica P Migo
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引用次数: 0

摘要

背景:需要努力评估水生沉积物中的重金属浓度:水生沉积物是其他生境的储存库和污染源,需要努力评估水生沉积物中的重金属浓度:本研究评估了菲律宾赞巴勒斯受采矿影响河流沉积物中 pH 值、颗粒大小和金属浓度的时间变化:方法:使用改良的 Van Veen 抓斗在河流沿岸的四个站点收集不同时期的沉积物样本。在使用 Thermo Scientific Niton XL3t 进行 X 射线荧光光谱分析以确定金属浓度之前,对样本进行切片、风干和 40 毫米筛网筛分。沉积物粒度采用筛分法分析,土壤 pH 值采用电极法分析:沉积物中测得的金属浓度如下:铁(Fe)>钙(Ca)>铬(Cr)>镍(Ni)>锰(Mn),平均值分别为 174.6 毫克/克、7.89 毫克/克、6.54 毫克/克、4.82 毫克/克和 2.75 毫克/克干物质(DM)。除第 4 站外,河流沉积物的平均 pH 值总体呈中性。就颗粒大小而言,上游站点的淤泥和粘土组分有所增加,但中游和下游站点的淤泥和粘土组分在采样期间有所减少。台风 "科普 "带来的洪水导致铁、锰、铬和镍的浓度降低,而钙和钾的浓度上升:讨论:大多数重金属(铁、镍、铬、锰)都超过了沉积物中无机物的可能影响水平(PEL),表明这些金属对环境和水生生物的不利影响预计会经常发生。与受淤积影响较小的 4 号站相比,该区域有金属富集的迹象。这表明,植被减少、矿产开采和农业活动可能引发的土壤侵蚀和径流对河流沉积物的质量产生了重大影响:研究结果表明,有必要制定和实施适当的监管措施,以保护和恢复这条含有重金属的河流:作者声明不存在经济利益冲突。
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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Metal Concentrations in Sediments of the Alinsaog River, Santa Cruz, Zambales, Central Luzon, Philippines.

Background: Efforts are needed to evaluate heavy metal concentrations in aquatic sediments which serve as repositories and as sources of contamination of other habitats.

Objectives: The present study assessed temporal changes in the pH, particle size and concentration of metals in sediments of a mining-affected river in Zambales, Philippines.

Methods: Sediment samples were collected at different periods in four stations along the river using a modified Van Veen grab. The samples were subjected to quartering, air-drying, and sieved through a mesh of 40 mm prior to X-ray fluorescence spectroscopy analysis using Thermo Scientific Niton XL3t to determine metal concentrations. The sediment particle size was analyzed by the sieve method and soil pH by the electrode method.

Results: Measured metal concentrations in the sediment were as follows: iron (Fe)> calcium (Ca)> chromium (Cr)> nickel (Ni)> manganese (Mn) with averages of 174.6 mg/g, 7.89 mg/g, 6.54 mg/g, 4.82 mg/g, and 2.75 mg/g dry matter (DM), respectively. The mean pH of riverine sediments was generally neutral, except for Station 4. In terms of particle size, silt and clay fractions increased in the upstream station but decreased in the midstream and downstream stations across the sampling periods. The flooding brought by Typhoon Koppu resulted in lowered concentrations of Fe, Mn, Cr, and Ni and an upsurge in Ca and potassium levels.

Discussion: Most of the heavy metals (Fe, Ni, Cr, Mn) exceeded the probable effect level (PEL) for inorganics in sediments, suggesting that the adverse effects of these metals on the environment and aquatic organisms are expected to occur frequently. In comparison with Station 4, which was less affected by siltation, there was a sign of metal enrichment in the area. This indicates that soil erosion and runoff, which might have been triggered by vegetation loss, mineral extraction, and agricultural activities, had a significant impact on the quality of river sediments.

Conclusions: The findings of the study point to the need for the formulation and implementation of appropriate regulatory measures for the protection and rehabilitation of the heavy metal-loaded river.

Competing interests: The authors declare no competing financial interests.

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Journal of Health and Pollution
Journal of Health and Pollution Medicine-Public Health, Environmental and Occupational Health
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期刊介绍: The Journal of Health and Pollution (JH&P) was initiated with funding from the European Union and World Bank and continues to be a Platinum Open Access Journal. There are no publication or viewing charges. That is, there are no charges to readers or authors. Upon peer-review and acceptance, all articles are made available online. The high-ranking editorial board is comprised of active members who participate in JH&P submissions and editorial policies. The Journal of Health and Pollution welcomes manuscripts based on original research as well as findings from re-interpretation and examination of existing data. JH&P focuses on point source pollution, related health impacts, environmental control and remediation technology. JH&P also has an interest in ambient and indoor pollution. Pollutants of particular interest include heavy metals, pesticides, radionuclides, dioxins, polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), volatile organic compounds (VOCs), air particulates (PM10 and PM2.5), and other severe and persistent toxins. JH&P emphasizes work relating directly to low and middle-income countries, however relevant work relating to high-income countries will be considered on a case-by-case basis.
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