Institute of Environmental Assessment and Water Research (IDAEA-CSIC), 08034 Barcelona, Spain; Department of Natural Resources and Environment, Industrial and TIC Engineering (EMIT-UPC), 08242, Manresa, Spain.
Institute of Environmental Assessment and Water Research (IDAEA-CSIC), 08034 Barcelona, Spain.
J Hazard Mater. 2020 Nov 15;399:122935. doi: 10.1016/j.jhazmat.2020.122935. Epub 2020 May 25.
We focus on a comparison of the geochemistry and mineralogy patterns found in coal, deposited dust (DD), respirable deposited dust (RDD) and inhalable suspended dust (PM10) from a number of underground mines located in China, with an emphasis on potential occupational health relevance. After obtaining the RDD from DD, a toxicological analysis (oxidative potential, OP) was carried out and compared with their geochemical patterns. The results demonstrate: i) a dependence of RDD/DD on the moisture content for high rank coals that does not exist for low rank coals; ii) RDD enrichment in a number of minerals and/or elements related to the parent coal, the wear on mining machinery, lime gunited walls and acid mine drainage; and iii) the geochemical patterns of RDD obtained from DD can be compared with PM10 with relatively good agreement, demonstrating that the characterization of DD and RDD can be used as a proxy to help evaluate the geochemical patterns of suspended PM10. With regards to the toxicological properties of RDD, the Fe content and other by-products of pyrite oxidation, as well as that of anatase, along with Si, Mn and Ba, and particle size (among others), were highly correlated with Ascorbic Acid and/or Glutathione OP.
我们专注于对中国多个地下煤矿中的煤、沉积粉尘（DD）、可吸入沉积粉尘（RDD）和可吸入悬浮粉尘（PM10）中的地球化学和矿物学模式进行比较，重点关注潜在的职业健康相关性。从 DD 中获得 RDD 后，进行了毒理学分析（氧化潜力，OP），并将其与地球化学模式进行了比较。结果表明：i）对于高煤级煤，RDD/DD 依赖于水分含量，而对于低煤级煤则不存在这种关系；ii）RDD 富集了与母体煤、采矿机械磨损、石灰喷涂墙壁和酸性矿山排水有关的多种矿物质和/或元素；iii）从 DD 中获得的 RDD 的地球化学模式可以与 PM10 进行比较，具有较好的一致性，表明 DD 和 RDD 的特征可以作为代理，帮助评估悬浮 PM10 的地球化学模式。关于 RDD 的毒理学性质，Fe 含量和黄铁矿氧化的其他副产物，以及锐钛矿、Si、Mn 和 Ba，以及粒径（等），与抗坏血酸和/或谷胱甘肽 OP 高度相关。
