ABSTRACT

Atmospheric dust can play a very important role in the polluted atmosphere. This has a direct impact on human health, global warming, climate change, visibility, precipitation, cloud formation, and so on. To evaluate the atmospheric dustfall rate and their mineralogical aspects, three separate sites were selected, namely mining, suburban, and control for dust sampling. Dustfall samples were collected at monthly intervals from copper and iron mining areas, in Singhbhum, India. The average atmospheric dustfall rate varied from 7.51 to 28.58 g/m²/month, and 7.40 to 26.37 g/m²/month during the summer and winter seasons, respectively, in the copper mining areas. At the same time, an average atmospheric dustfall rate varied from 7.23 to 76.99 g/m²/month during summer season and 6.48 to73.92 g/m²/month during the winter season in the iron mining area. The major minerals identified by X-ray diffraction (XRD) analysis of dustfall samples from copper mining area were quartz, kaolinite, pyrite, albite, and magnesio hornblende. However, in the case of iron mining area, the major minerals found were quartz, cristobalite, hematite, magnetite, biotite, albite, ilmenete, pyrite, rutile, and dolomite. Overall, the intensity of dust pollution is greater in the vicinity of mining and industrial sites of the copper and iron mining areas.

Implications: The study has been conducted in the copper and iron mining areas of East and West Singhbhum districts of Jharkhand state, respectively. The aim of the present study was twofold, namely, (i) to evaluate the dustfall rates (ii) and to characterize the mineralogy of atmospheric dust. East and West Singhbhum are the significantly industrialized areas of India known for the mining of copper and iron ores, steel production, power generation, and other related activities. In order to improve local people’s living conditions, there is an urgent need for baseline data of dust pollution and its general characteristics based on scientific disclosures to allow policy recommendations and their implementation. Therefore, the study falls within the scope of the journal. The atmospheric dustfall rates were found to be higher during the summer season due to increased dispersion caused by the high wind speed during the summer season. During the winter season, lower rates were observed due to monsoonal rainfall washout and higher relative humidity, which reduces dust resuspension. However, the present study considered the extent of dustfall rates and their mineral characteristics. An immediate need arises to regularly monitor the dust pollution and to implement suitable dust control system like wet dust suppression and airborne dusts capture for dust abatement.

摘要

大气尘埃在受污染的大气中可以发挥非常重要的作用。这直接影响到人类健康，全球变暖，气候变化，能见度，降水，云层形成等。为了评估大气降尘率及其矿物学特征，选择了三个单独的站点，即采矿，郊区和粉尘采样控制。每月一次从印度辛格蓬的铜矿和铁矿地区收集降尘样品。在铜矿山地区，夏季和冬季的平均大气降尘率分别为7.51至28.58 g / m ² /月和7.40至26.37 g / m ² /月。同时，平均大气降尘率从7.23至76.99 g / m ²铁矿开采地区在夏季/月和冬季的6.48至73.92 g / m ² /月。通过X射线衍射（XRD）分析确定的来自铜矿区的降尘样品的主要矿物为石英，高岭石，黄铁矿，钠长石和菱镁矿。但是，在铁矿区，发现的主要矿物是石英，方石英，赤铁矿，磁铁矿，黑云母，钠长石，钠铁矿，黄铁矿，金红石和白云石。总体而言，铜和铁矿区的采矿和工业场所附近的粉尘污染强度更大。

含义：这项研究分别在贾坎德邦东部和西部Singhbhum区的铜矿和铁矿区进行。本研究的目的是双重的，即（i）评估降尘率（ii）并表征大气尘埃的矿物学。东和西辛格布姆邦是印度的重要工业区，以开采铜和铁矿石，钢铁生产，发电及其他相关活动而闻名。为了改善当地人民的生活条件，迫切需要基于科学披露的粉尘污染及其一般特征的基准数据，以允许政策建议及其实施。因此，该研究属于该期刊的范围。由于夏季高风速引起的分散性增加，夏季的大气降尘率更高。在冬季，由于季风降雨冲刷和较高的相对湿度，观测到的比率较低，从而减少了粉尘的重新悬浮。但是，本研究考虑了降尘率及其矿物特性的程度。迫切需要定期监测粉尘污染并实施合适的粉尘控制系统，例如湿粉尘抑制和机载粉尘捕集以减少粉尘。本研究考虑了降尘率的程度及其矿物特征。迫切需要定期监测粉尘污染并实施合适的粉尘控制系统，例如湿粉尘抑制和机载粉尘捕集以减少粉尘。本研究考虑了降尘率的程度及其矿物特征。迫切需要定期监测粉尘污染并实施合适的粉尘控制系统，例如湿粉尘抑制和机载粉尘捕集以减少粉尘。