Assessment and zoning of environmental hazard of heavy metals using the Nemerow integrated pollution index in the vineya

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RESEARCH ARTICLE - ANTHROPOGENIC HAZARD

Assessment and zoning of environmental hazard of heavy metals using the Nemerow integrated pollution index in the vineyards of Malayer city A. Ali Yari1 · J. Varvani1 · R. Zare1 Received: 8 August 2020 / Accepted: 9 November 2020 © Institute of Geophysics, Polish Academy of Sciences & Polish Academy of Sciences 2020

Abstract The purpose of the present study was to evaluate and zoning the environmental hazards of heavy metals in the soil using the Nemerow integrated pollution index in vineyards (vineyards) of Malayer city. In this study, after consecutive visits to the study area and reviewing the map of the area, sampling operations were performed in January 2019. Soil sampling was performed based on a systematic random method. A total of 286 samples were collected from topsoil (depth 0 to 20 cm). Of these, 157 samples were located in agricultural lands (gardens and agricultural land) and 129 samples in natural areas (pastures and barren lands). The samples were analyzed by high-resolution continuum source atomic absorption spectrometry (HR-CS AAS) and using the flame method. The average concentrations of Cu, Mn, Zn, Cr, As, Ni and Hg are 87.86, 597, 109, 67.12, 47.1, 84.32, and 0.344 mg/kg, respectively. These values are lower than the NIPI index values for these metals. The results showed that there is a positive and significant correlation between Cu and Mn, Cu and zinc, Cu, and As as well as As and Ni. There is also a significant negative correlation between Cu and Hg, As and the electrical conductivity (EC) as well as As and Mn. At present, these soils are not at serious risk of soil contamination with heavy metals. Keywords  Heavy metals · Grapes · Environmental hazard · Nemerow integrated pollution index

Introduction Environmental degradation and pollution are the results of industrial societies and one of the consequences of the industrialization of human societies. In general, any change in the properties of the components of the environment so that their natural function and biological balance is disturbed and directly or indirectly endanger the interests and life of living organisms is called environmental pollution (Shahbazi et al. 2012). Soil pollution, both due to natural and human factors, reduces the quality of the environment (Ravankhah et al. 2015). Agricultural soils directly affect public health through food production; so that today, food contamination, including fruits and vegetables, to heavy metals, has become Communicated by Savka Dineva, PhD (CO-EDITOR-INCHIEF)/Stelios Stoulos (ASSOCIATE EDITOR). * J. Varvani [email protected] 1



Department of Environment, Arak Branch, Islamic Azad University, Arak, Iran

one of the major health problems (Tahsini & Gavilian 2016). Heavy metals are of natural and human origin and the main human resources related to industrial-mining activities, including oil extraction, transportation, municipal wastewater, and agricultural activities (fertilizers and chemical toxins, animal manures, and compost) (Wei & Y