Spatial distribution of heavy metals density in cultivated soils of Central and East Parts of Black Sea Region in Turkey

Abstract

Article Info Received : 19.10.2016 Accepted : 21.01.2017 Heavy metal contamination has caused serious environmental and health-related problems around the world. To identify the concentrations and sources of heavy metals, 3400 surface soil samples (0-20 cm depth) were collected from the study area. Subsequently, the concentrations of Cd, Co, Cu, Ni, Pb and Zn in the samples were measured. In order to evaluate natural or anthropogenic sources of heavy metal content and their spatial distribution in agricultural fields of Central and East Parts of Black Sea Region soil geostatistic approach were combined with geographic information system (GIS). GIS technology was employed to produce spatial distribution maps of the 6 elements in the study area. The results showed that the concentration of Ni and Co exceeded its threshold level. The local pollution from Ni was attributed to the natural influences. The concentrations of the other heavy metals are relatively lower than the critical values. The mean values of the heavy metal contents arranged in the following decreasing order: Ni > Zn > Cu >Pb> Co > Cd in the study area. On the other hand, according to distribution ratio of heavy metals in total soil samples, except for Co and Ni distribution in total soil samples, all other heavy metal element exceeded concentration in samples were determined about less than 10% total soil samples. However, in some regions of the study area, the Cd, Cu and Zn contents were also slightly raised, this case possibly stem from excessive P fertilization and field traffic.

Health Risk of Zinc Pollutant in Agricultural Soil in Some Leaves of Selected Leafy Vegetables in Kirkuk, North Iraq

“…Maximum content of zinc is observed in site L7 then L8, L9 and L10 samples (169.2, 83.5, 70.6, 73.4) in mg/kg respectively, this increases are due to using wastewater for irrigation the field crops, this interpretation corresponds to the study of (Awadh and Al-Hamdani, 2019;Khan et al, 2014 andKhan et al, 2008), and use of agricultural fertilizers or vehicle traffic (Ozyazici et al, 2017), or enrichment by intensive agricultural activities for long time (Liu et al, 2019), but notice Zn concentration in L1, L2, L3, L4, L5, and L6 samples are lower than the content from the above mentioned samples (48.1, 52.8, 54.2, 58.6, 50.6, and 48.1) in mg/kg respectively, that indicate these sampling sites are not under the exhibition of any anthropogenic or industrial source that increase Zn content in the soil.…”

Assessment of potential ecological risk index based on heavy metal elements for organic farming in micro catchments under humid ecological condition

“…In addition, positive relationships were found between both Cr content and Ni (p<0.01) concentration and between Pb content and Zn (p<0.01) concentration. Many researchers have obtained similar results in correlation analysis between OM, pH, lime and soil particle distribution with heavy metal content of soils (Demir et al, 2016;Özyazıcı et al, 2017;Tang et al, 2018). On the other hand, some researchers (Tume et al, 2006;Nizami and Rehman, 2018) reported that there was no relationship between pH and OM content of soils and heavy metal contents.…”

Seasonal Assessment of Groundwater Contamination in Coal Mining Areas of Balochistan

“…The global information system is an effective tool for loading a huge volume of data to correlate and use further for spatial analysis [11]. GIS technology has been recommended and proposed by many scientists all over the world [12][13][14][15][16][17] to determine the spatial distribution of heavy metal and identify the source of pollution. The present research aims to understand the quality of groundwater based on heavy metal concentration and is depicted by means of an interpolation technique [18].…”