Assessment of the metals contamination and their grading by SAW method: a case study in Sarcheshmeh copper complex, Kerman, Iran

Abstract

Studying the distribution of metals in the soil of mineral regions is one of the most important environmental issues. These metals are transferred to the cycle of nature by geogenic and anthropogenic resources, causing serious short-and long-term effects, and posing serious risks for the survival of living organisms. Various mining activities, smelting and beneficiation processes are important anthropogenic factors in the presence of metals in soil, which play a far more effective role in soil pollution than natural factors. Sarcheshmeh copper mine in Kerman is one of the largest copper sulfide mines in the world, for which evaluation and grading of metals contamination has paramount importance due to the high volume of mining. In this study, in order to determine the metal content in the surface soil from the Sarcheshmeh copper complex soils area, 120 surface soil samples were taken from a depth of 30 cm, and analyzed for the metals Pb, Ni, Se, Mo and Zn using the ICP-MS method. Then, the contamination coefficient, enrichment factor and geoaccumulation index of these metals were calculated. Based on expert views on the relative importance of each of the indicators and their final weight, risk assessment and grading by the simple additive weighting (SAW) method was performed. According to the results, the highest risk of pollution was obtained for nickel and the lowest was for selenium.

An Economic Analysis of Brownfield and Greenfield Industrial Parks Investment Projects: A Case Study of Eastern Slovakia

“…The SAW method was used in a comparison of coal power plants with nuclear power plants with a result stating that the coal power plants with carbon capture and storage are slightly more efficient than nuclear power plants [ 52 ]. The SAW method was used in a study of the impact of anthropogenic risks on protected areas [ 53 ], in the selection of obtaining methods for small building works [ 54 ], in risk assessment and evaluation of pollution by metals in a copper sulfide mine in Iran [ 55 ], in the prioritization of criteria and indicators for the evaluation of environmental, economic, and social factors in the sustainability of national parks [ 56 ], in evaluation of ecological and human-related parameters affecting industrial zoning [ 57 ], and in the assessment of risk management capability based on accepted risk allocation principles, which were derived from qualitative data and expert knowledge [ 58 ]. Multi-criteria decision-making methods—an order preference by similarity to ideal solution – Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS) and SAW methods—were applied for the identification, customization, weighting, prioritization of criteria, and indicators of evaluation for the determination of potential of environmental, economic, and social services [ 56 ].…”

Perancangan Aplikasi Multi Criteria Decision Making Dalam Penerimaan Beasiswa Kepada Dosen Studi Lanjut STMIK Balikpapan Menggunakan Metode SAW

“…Metode SAW adalah metode yang sederhana yang dapat memvalidasi bobot dengan akurat yang tinggi dengam mempertimbangkan kriteria yang digunakan [10]. Tahapan utama proses evaluasi metode SAW [7], meliputi:…”

“…Metode SAW merupakan metode penjumlahan bobot yang sederhana dan menghasilkan nilai dengan akurasi cukup tinggi [6]. Kelebihan metode SAW adalah dapat mengidentifikasi analisis sensitivitas sehingga dapat memecahkan permasalahan dengan kemampuan grafis komputer, mengevaluasi bobot kriteria dan alternatif dan menghasilkan bobot ranking [7]. Tahapan utama multi criteria decision making menggunakan metode SAW meliputi manajemen kriteria dan alternatif, evaluasi kriteria dan alternatif.…”

Hybrid Method for Mobile learning Cooperative: Study of Timor Leste

“…In the decision support system that use to run on the learning process is a member of the cooperative that can make money or not, then the credit decision support system using AHP (Analytical Hierarchy Process) and SAW (Simple Additive Weighting) which is also a method that can solve complex situation that unstructured, determines which variable has the highest priority to influence the outcome of the situation [23], And look for the sum of weighted ratings on each alternative across all attributes and must the process of normalizing the decision matrix to a Scale that is comparable to all existing alternative ratings [24] [25] [26]. To process the calculation can be done through the existing criteria.…”