Assesment of dispersion of heavy metals (As, Pb, Zn and Cd) in Varamin city water supply network and their spatial distribution pattern by GIS

Subject Areas : Heavy metal

Delaram Moosavi khatibi ¹ , Shahram Baikpour ² , alireza Gharagozlu ³ , mahdi ramezani ⁴

1 - MSc Environmental Geology, Faculty of Natural Resources and Environment, Islamic Azad University, Tehran Science and Research Unit, Tehran, Iran.
2 - Assistant Professor, Department of Environmental and Forest Sciences, Faculty of Natural Resources and Environment, Islamic Azad University, Tehran Science and Research Unit, Tehran, Iran.*(Corresponding Author)
3 - Assistant Professor, Department of Environmental and Forest Sciences, Faculty of Natural Resources and Environment, Islamic Azad University, Tehran Science and Research Unit, Tehran, Iran.*(Corresponding Author)
4 - Associate Professor, Department of Environmental and Forest Sciences, Faculty of Natural Resources and Environment, Islamic Azad University, Tehran Science and Research Unit, Tehran, Iran.

Received: 2020-02-05 Accepted : 2020-09-12 Published : 2023-09-23

Keywords: world health organization, Varamin, Heavy metal Pollution, ICP-OES EOP,

Abstract :

Background and Objective: Drinking water pollution has become one of the most important issues in everyday human life. This study covered a 1580 square kilometers area. In this research, the quality of Varamin drinking water was studied in terms of heavy metal contaminants including lead, zinc, arsenic, and cadmium. Material and Methodology: In this study, 30 samples of Varamin drinking water were collected and analyzed using ICP-OES EOP after preparation in the laboratory. The map of heavy metal distribution was prepared using Arc GIS to determine the degree of heavy metal pollution and distribution in the region’s drinking water. Two indices of Heavy Metal Evaluation Index (HEI) and Heavy Metal Pollution Index (HPI) based on concentration and heavy metals in the region proportionate to the maximum allowed concentration for drinking were used to determine the degree of regional drinking water pollution. Findings: The results of the study on heavy metal contaminants including lead, zinc, cadmium, copper, arsenic, chromium, and iron using two methods of pollution index evaluation showed that the heavy elements were less than 10 according to Heavy Metal Evaluation method and the pollution degree was low. The results of Heavy Metal Pollution method showed that these elements were at pollution threshold value in most stations under study. Discussion and Conclusion: Based on the zoning in this region by inverse distance weighting (IDW) interpolation in ArcGIS, it was concluded that the highest degree of heavy elements was in northwestern and western part of the city and the lowest degree was in northeastern part of the city.

References:

1. HUANG, L., CHEN, T., HE, X., YANG, H., WANG, C., LIU, M. & YAO, M. 2017. Determination of heavy metal chromium in pork by laser-induced breakdown spectroscopy. Applied Optics, 56, 24-28.


2. Ghazban, F. Enviromental Geology, University of Tehran, In Persian.


3. kamarehei B, Mirhosseini S H, jafari A, Asgari G, Bierjandi M, rostami Z. Study of heavy metal concentration (As, Ba, Cd, Hg, Pb, Cr) in water resources and river of Borujerd city in 2008-2009. after. 2010; 11 (4) :45-51


4. ZHANG, Z., WANG, Z., LI, Q., ZOU, H. & SHI, Y, 2014, Determination of trace heavy metals in environmental and biological samples by solution cathode glow discharge-atomic emission spectrometry and addition of ionic surfactants for improved sensitivity. Talanta,119, 613-619.


5. Singh UK, Kumar B. Pathways of heavy metals contamination and associated human health risk in Ajay River basin, India. Chemosphere (2017) 174:183-199.


6. Dipak P. 2017, Research on heavy metal pollution of river Ganga: A review. Annals of Agrarian Science; 15, 2: 278-2.


7. Mohan S.V., Nithila P. and Reddy S.J., 1996: Estimation of heavy metal in drinking water and development of heavy metal pollution index. Journal Environmental Science and Health A31(2): 283.