Tajwar Mahir, Shreya Shamiha Shafinaz, Hasan Mahmudul, Hossain Md Bayazid, Gazi Md Yousuf, Sakib Nazmus
Department of Geosciences, Auburn University, AL 36849, USA.
Department of Geology, University of Dhaka, Dhaka 1000, Bangladesh.
Heliyon. 2022 Nov 17;8(11):e11666. doi: 10.1016/j.heliyon.2022.e11666. eCollection 2022 Nov.
Pollution generated by microplastics (MPs) has become an issue of global concern because to its severe effects on the general health of the ecosystem, especially the health of the terrestrial environment. There is a scarcity of data based on MP contamination research in Bangladesh that is currently available, and no work on MP contamination has previously been done in an industrial region of Bangladesh. As a result, this research was undertaken with the aim of determining whether or not MP contamination is present in the industrial area of the Barapukuria region in Bangladesh. The method of sieving and density separation was used in the process of extracting MPs from a total of 12 soil samples that were collected from the industrial area of Barapukuria. A stereomicroscope was utilized to accomplish the visual identification of the MPs. The method of sieving and density separation was used in the process of extracting MPs from 12 soil samples that were gathered from the industrial area of Barapukuria. A stereomicroscope was utilized in order to accomplish the visual identification of the MPs. The concentration of MPs accounted for 1-15 items/100g (Mean: 6.75 ± 5.3) in the 12 sampled regions, mostly white in color and ranging in size from 0.5-1 mm. Fibers have been found to be the most prevalent among the detected MPs (films, fiber, foam, and fragments). 8-types of MPs (Mean: 0.32 ± 0.69) were detected in 5 rural farmland locations, 11 MPs (Mean: 1.1 ± 1.73) in 2 sub-urban farmland sites, 11 MPs (Mean: 2.2 ± 3.19) in 1 urban farmland site, 24 MPs (Mean: 2.4 ± 1.89) in 2 industrial locations, and 27 MPs (Mean: 2.7 ± 3.05) in 2 near metropolitan areas. Based on the land use land cover analysis, higher contamination of MPs have been detected in the industrial and coal mine region of Barapukuria whereas relatively lower amount of MPs have been found in the rural and urban regions.
微塑料（MPs）产生的污染已成为全球关注的问题，因为它对生态系统的整体健康，尤其是陆地环境的健康有严重影响。目前孟加拉国基于微塑料污染研究的数据稀缺，且此前在孟加拉国的工业区尚未开展过微塑料污染方面的工作。因此，开展这项研究的目的是确定孟加拉国巴拉普库里亚地区的工业区是否存在微塑料污染。从巴拉普库里亚工业区采集的总共12个土壤样本中提取微塑料的过程中使用了筛分和密度分离方法。利用体视显微镜对微塑料进行目视识别。从巴拉普库里亚工业区采集的12个土壤样本中提取微塑料的过程中使用了筛分和密度分离方法。为了对微塑料进行目视识别，使用了体视显微镜。在12个采样区域中，微塑料的浓度为1 - 15个/100克（平均值：6.75 ± 5.3），颜色多为白色，尺寸在0.5 - 1毫米之间。在检测到的微塑料（薄膜、纤维、泡沫和碎片）中，纤维最为普遍。在5个农村农田地点检测到8种类型的微塑料（平均值：0.32 ± 0.69），在2个城郊农田地点检测到11种微塑料（平均值：1.1 ± 1.73），在1个城市农田地点检测到11种微塑料（平均值：2.2 ± 3.19），在2个工业区检测到24种微塑料（平均值：2.4 ± 1.89），在2个近大都市区检测到27种微塑料（平均值：2.7 ± 3.05）。基于土地利用土地覆盖分析，在巴拉普库里亚的工业区和煤矿区检测到的微塑料污染较高，而在农村和城市地区发现的微塑料数量相对较少。
