Assessment of Nickel and Iron levels in soil of Khulna City, Bangladesh
DOI:
https://doi.org/10.38032/scse.2025.3.106Keywords:
Soil, Khulna, ICP-MS, Permissible, ContaminationAbstract
Nickel and iron are fundamental elements of soil composition. Due to urbanization, industrialization, and human activities, the accumulation of these metals is increasing in the soil, crossing the permissible limit, and threatening the ecosystem, humankind, and animals. This study's objective was to evaluate the amount of Ni and Fe in the soil of Khulna, a city in Bangladesh. 26 Samples were collected from several locations, including living and non-living area, industrial, roadway, riverbank, and dumping sites. The soil sample was processed, and then heavy metal contents of the soil sample was analyzed by Inductively Coupled Plasma Mass Spectrometry (ICP-MS). The WHO specifies an acceptable level for Fe is 50,000 ppm and for Ni is 35 ppm. After analyzing the soil by ICP-MS, the quantity of Ni ranged between 22.6 ppm-137 ppm, and for Fe, it was 11100 ppm-59000 ppm. The amount of Ni in the sample region is relatively high; all the samples except sample-5 exceed the permissible limit. Conversely, only sample-10 of Fe crosses the permissible limit. These results provide information on the concerning buildup of nickel in Khulna’s soil, whereas the level of iron is quite tolerable. This study offers useful data for research investigations and decisions the concerned authority will need to make addressing Ni and Fe concentration.
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