Heavy Metals in the Soils of Placer Small-Scale Gold Mining Sites in Myanmar
Heavy Metals in the Soils of Placer Small-Scale Gold Mining Sites in Myanmar
复制标题
缅甸砂金小型金矿场土壤中的重金属
DOI：
10.5696/2156-9614-10.27.200911
复制
发表时间：
2020
影响因子：
2.4
通讯作者：
W. Siriwong
中科院分区：
文献类型：
--
作者：
A. Tun;Pokkate Wongsasuluk;W. Siriwong
背景。手工和小规模采矿活动在全球范围内广泛开展。由于采矿活动，环境中与金相关的重金属，如铜 (Cu)、锌 (Zn)、砷 (As)、镉 (Cd)、汞 (Hg) 和铅 (Pb) 浓度会增加，导致环境污染并对人类和动物造成毒性风险。目标。本研究的目的是调查缅甸砂金小规模金矿开采作业中有毒重金属的土壤浓度。方法。土壤样本是从三个砂金小型金矿开采地点采集的：地点 A 位于 Hmawbon 公共保护森林中，地点 B 和地点 C 位于 Nar Nant Htun 村周围的 Nant-Kyin 保留森林中。在每个地点，从四个金矿开采阶段（矿石加工、冲洗、淘选和混汞）收集土壤样本。利用原子吸收光谱法检测 As、Cd、Pb 和 Hg 的浓度。结果。所有金矿开采点的重金属浓度通常出现在混汞阶段。在三个矿区中，混汞阶段的最大重金属浓度分别为：As 22.170 mg.kg−1、Cd 3.070 mg.kg−1、Hg 77.440 mg.kg−1 和 Pb 210.000 mg.kg−1。结论。本研究调查了缅甸班茂克镇几个小型金矿场土壤中砷、镉、汞和铅的浓度。结果表明，金矿开采场地的土壤中存在高浓度的重金属。该地区的矿工在没有适当个人防护装备的情况下工作，经常接触土壤中的重金属可能会对健康造成不利影响。本研究为未来金矿重金属污染风险评估研究提供了基线数据。利益竞争。作者声明没有竞争性的经济利益
Background. Artisanal and small-scale mining activities are widely practiced globally. Concentrations of heavy metals associated with gold, such as copper (Cu), zinc (Zn), arsenic (As), cadmium (Cd), mercury (Hg) and lead (Pb) can increase in the environment as a result of mining activities, leading to environmental pollution and pose toxicity risks to humans and animals. Objectives. The aim of the present study was to investigate soil concentrations of toxic heavy metals in placer small-scale gold mining operations in Myanmar. Methods. Soil samples were collected from three placer small-scale gold mining sites: Site A located in the Hmawbon public protected forest, Site B and Site C, situated in the Nant-Kyin reserved forest around Nar Nant Htun village. At each site, soil samples were collected from four gold mining stages (ore processing, sluicing, panning, and amalgamation). Atomic absorption spectroscopy was utilized to examine the concentrations of As, Cd, Pb, and Hg. Results. The highest heavy metal concentrations were generally found in the amalgamation stages across all the gold mining sites. Across the three mining sites, the maximum heavy metal concentrations in the amalgamation stage were 22.170 mg.kg−1 for As, 3.070 mg.kg−1 for Cd, 77.440 mg.kg−1 for Hg, and 210.000 mg.kg−1 for Pb. Conclusions. The present study examined the concentrations of As, Cd, Hg and Pb in the soil of several small-scale gold mining sites in Banmauk Township, Myanmar. The results demonstrated the presence of high concentrations of heavy metals in the soil of the gold mining sites. Miners in this area work without proper personal protective equipment, and frequent exposure to heavy metals in the soil may cause adverse health effects. The present study provides baseline data for future risk assessment studies of heavy metal contamination in gold mines. Competing Interests. The authors declare no competing financial interests
AOAC 2009.01 使用基于官方酶-HPLC 方法的改良方法测定加工食品中难消化低聚糖含量的准确性
DOI：
--
发表时间：
2014
期刊：
影响因子：
--
作者：
岩本綾香;古瀬充宏;山崎いづみ;安尾しのぶ;田辺賢一，中村禎子，大曲勝久，奥 恒行
通讯作者：
田辺賢一，中村禎子，大曲勝久，奥 恒行