Heavy metal analysis in the soils of in and around Robe town, Bale zone, South Eastern, Ethiopia

Abstract

The purpose of this study was to assess physicochemical parameter and heavy metal concentration of the soil in and around Robe town, Bale zone, Ethiopia. Seven soil samples (three from dump sites and four from farm lands) were collected and analyzed through different methods for analyzing the physicochemical parameters like, pH Sand/Silt/Clay Content, MC, OM. and the heavy metals including Cr, Cd, Cu, Fe, Zn and Pb, were investigated using Flame atomic absorption spectrophotometer (FAAS). The analyzed result of all sites revealed that, high moisture content % (14.83 ± 2.57to 19.96 ± 0.72), pH slightly acidic except S2 which is slightly basic, (5.77 ± 0.08 to 7.60 ± 0.33),high organic matter % (13.83 ± 0.49 to 16.60 ± 0.90), sand % (53.00 ± 4.51 to 65.33 ± 2.42), silt % (19.33 ± 1.03 to 24.84 ± 4.62), clay % (11.33 ± 1.03 to 19.50 ± 2.50) sandy nature of soil were observed and the concentration of heavy metals such as: Cr (32.53 ± 3.51 to 41.81 ± 1.06) ppm, Cd (0.57 ± 0.21 to 0.93 ± 0.24) ppm, Cu (26.54 ± 0.68 to 37.44 ± 2.72) ppm, Zn (66.98 ± 1.09 to 170.48 ± 1.51) ppm Fe (33483.55 ± 1470.02 to 49012.18 ± 2692.20) ppm and Pb (18.04 ± 0.37 to 20.77 ± 0.46) ppm were obtained. The results showed that all of the assessed heavy metals below maximum permissible limit except Fe, which is above maximum permissible limit that recommended by Ewers, Based on the results obtained from the study the level of metals concentrations safe for agricultural activities. But different measures must be taken to minimize additional soil pollution.

Comparison of Heavy Metal Content in Artemisia austriaca in Various Impact Zones

“…The MPL for the total Pb content as well as for the mobile forms of Pb, Zn, and Cu exceeded in the soils within the 5 km zone around Novocherkasskaya Power Station (Figure ). The maximum total content and content of mobile forms of HMs reached their maximum value in the soils located in plots within the northwestern direction and decreased with the distance from the station, which is typical for soils of different impact zones according to the previous study . The concentration of the studied HM exceeded the MPL for soils.…”

“…The maximum total content and content of mobile forms of HMs reached their maximum value in the soils located in plots within the northwestern direction and decreased with the distance from the station, which is typical for soils of different impact zones according to the previous study. 19 The concentration of the studied HM exceeded the MPL for soils. Statistically significant differences between HM content in soil were found at the monitoring plots depending on the source of pollution ( Figures 1 and 2 ).…”

Chemical Fractionation and Risk Assessment of Some Heavy Metals in Soils, Assiut Governorate, Egypt

“…4). This sandy nature of soil may be due to the depletion of humus from the soil [29]. The content of heavy metals in soil is inversely proportional with the soil particle sizes and accumulates in the clay and silt fraction of soil [9].…”

Impacts of irrigation with Cd-contaminated water from Sugovushan Reservoir, Azerbaijan on total cadmium and its fractions in soils with varied textures

“…The repercussions of Cd contamination extend beyond its environmental presence, as it tends to accumulate in various organs upon entry into the human body, posing serious health risks (Pan et al, 2010;Hajeb et al, 2014). Unlike some other toxic elements, such as mercury (Hg) and arsenic (As), Cd predominantly finds its way into the human diet through terrestrial pathways, with vegetables grown in regions characterized by elevated Cd concentrations in soil and groundwater being primary contributors (Sebastian and Prasad, 2014;Liu et al, 2017;Tefera et al, 2018). The nuanced bioavailability of Cd becomes : https://doi.org/10.18393/ejss.xxxxxxx : Federation of Eurasian Soil Science Societies : http://ejss.fesss.org/10.18393/ejss.xxxxxx : 2147-4249 apparent in regional variations, exemplified by the differing Cd levels in rice cultivated in the southern and northern parts of China.…”