Statistical Modeling of Environmental Pollution of Soil Around Oilfields Using Geochemical Indices

Document Type : Research Paper

Authors

1 M.S. Student, Department of Geology, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran

2 Associate Professor, Department of Geology, Khorramshahr University of Marine Science and Technology, Khorramshahr, Iran

Abstract
The importance of studying Quaternary deposits has increased to such an extent that it now occupies a significant part of research in different parts of the world. In oil-rich countries, including Iran, pollution caused by oil industry activities such as drilling and exploitation has seriously threatened the sediments and soils around these areas. The Abteymour oilfield is one of the big fields in southwestern Iran, located in the area of agricultural lands. As a result, it is essential to evaluate its environmental effects. In this research, 33 surface soil samples were collected, and in addition to measuring the concentration of heavy metals, some physical and chemical characteristics of the soil were measured. Statistical analyses such as correlation coefficient, principal component analysis, and cluster analysis were used to identify the source of pollutants. Environmental geological indices such as geoaccumulation index (Igeo), enrichment factor (EF), contamination factor (Cf), and Nemro integrated pollution index (NIP) were used to determine the level of heavy metal pollution. The cluster analysis results stated that the studied elements were clustered in two groups. Also, the factor analysis results showed that 89% of the variation of the studied parameters was affected by two factors. The results of the statistical analysis demonstrated that the pollution in the region was of anthropogenic origin, and the activities related to the extraction and exploitation of the Abteymour oilfield, agricultural activities, and wastewater impacted the soil quality in the area. Investigation of the pollution level of the samples based on the Igeo, EF, Cf, and NIP indices indicated that the samples were unpolluted for most of the studied elements. Some samples had low pollution levels for elements Na, Mg, Cr, Ni, Sr, Cu, Li, and Pb. Sulfur (S) also included all pollution levels although most of the samples were at the medium level. Based on the modified contamination degree index (mCd) and ecological risk of the sum of elements (RI) indices, 100% of the samples had very low levels and low risk, respectively. Due to the continuation of agricultural activities and oil industries in the studied area, there is a possibility of increasing the level of pollution.

Highlights

  • In oil-rich countries such as Iran, the pollution caused by oil industry activities such as drilling and exploitation has seriously threatened the soils around these areas;
  • The soil of the Abteymour oil field was investigated to estimate the concentration of heavy metals and determine the source of pollution;
  • The soil accumulation index for the studied elements showed that among the studied elements, a small percentage of the samples of chromium, nickel, manganese, magnesium, and sodium were placed in the non-polluted to medium pollution class; unlike other samples, the sulfur element included all categories;
  • Based on the factor analysis of the Abteymour oil field, only drilling fluid, drilled formations, and extracted oil and gas were the dominant processes in the region.

Keywords

Subjects

Abrahim, G.M.S, Holocene sediments of Tamaki Estuary: Characterization and impact of recent human activity on an urban estuary in Auckland, New Zealand, Ph.D. thesis, University of Auckland, Auckland, New Zealand, 361p, 2005.
Absalon, D. and Slesak, B., The effects of changes in cadmium and lead air pollution on cancer incidence in children. Science of the Total Environment, Vol. 408, No. 20, p. 4420–4428, 2010.
Afshari, A., Khademi, H., and Hojjati, S., Assessment of Heavy Metals Pollution Risk in Soils of Central Zanjan Province Based on Pollution Indices. Journal of Water and Soil Conservation, Vol. 22, No. 6, p. 21–40, 2016. (In Persian).
Al-Khashman, O.A., The investigation of metal concentrations in street dust samples in Aqaba city, Jordan. Environmental Geochemistry and Health, Vol. 29, No. 3, p. 197–207, 2007.
Alipour Asadabadi, Z., Malekian, M., and Soleimani, M., Contamination by Petroleum hydrocarbons and Heavy metals in Soils of Five Oil Refineries. Journal of Water and Soil Conservation, Vol. 23, No.1, p. 273–284, 2016.
Amiri, M., Sarikhani, R., Dehnavi Artimes GH., and Moradpour, A., The assessment of pollution and distribution of heavy metals applying geochemical data and statistical analysis in soils surrounded Kermanshah refinery. Quaternary Journal OF Iran, Vol. 2, No. 3, p. 257–269, 2016. (In Persian).
Anyakora, C., Ehianeta, T., and Umukoro, O., Heavy metal levels in soil samples from highly industrialized Lagos environment, Africa. Journal of Environmental Science Technology, Vol.7, No. 9, p. 917–924, 2013.
Atiemo, M.S., Francis Ofosu, G., Kuranchie-Mensah, H., Osei Tutu, A., Linda Palm, N.D.M. and Arthur Blankson, S., Contamination Assessment of Heavy Metals in Road Dust from Selected Roads in Accra, Ghana. Research Journal of Environmental and Earth Sciences, Vol. 3, No. 5, p. 473–480, 2011.
Azimzadeh, B. and Khademi, H., Estimation of Background Concentration of Selected Heavy Metals for Pollution Assessment of Surface Soils of Mazandaran Province, Iran. Water and Soil, Vol. 27, No. 3, p. 548–559, 2013. (In Persian).
Badae, N., Bashir Aamir, U., Mehmood, M.R., Nisar, N., Alam, M.M., Kazi, B.M., and Zaidi S.S.Z., Influenza virus surveillance in Pakistan 2008–2011, Vol. 8, No. 11, 2012.
Bakhtiari, H., Amanipoor, H., and Battaleb-Looie, S., Analysis of heavy metal accumulation and environmental indicators in fluids and drilling cuttings. J Petrol Explor Prod Technol, Vol. 18, No. 9, 2023.
Bergamaschi, L., Rizzio, E., Valcuvia, M.G., Verza, G., Profumo, A., and Gallorini, M., Determination of trace elements and evaluation of their enrichment factors in Himalayan lichens. Environmental Pollution, Vol.120, p. 137–144, 2002.
Borges, R.C., Caldas, V.G., Filho, F.F.L.S., Ferreira, M.M., and Lapa, C.M.F., Use of GIS for the evaluation of heavy metal contamination in the Cunha Canal watershed and west of the Guanabara Bay, Rio de Janeiro, RJ. Marine Pollution Bulletin, Vol. 89, No. 1, p. 75–84, 2014.
Deely, J.M. and Fergusson, J.E., Heavy metal and organic matter concentration and distributions in dated sediment of small adjacent to a small urban area. The Science of the Total Environment, Vol. 153, p. 97–111, 1994.
Deepalakshmi, A., Ramakrishnaiah, H., Ramachandra, Y., and Kumar, N.N., Leaves of higher plants as indicators of heavy metal pollution along the Urban Roadways. International Journal of Science and Technology, Vol. 3, No. 6, p. 340–346, 2014.
Grow Cock. F.B., Curtis. G.W., Hoxha. B., Broo. W.S., and Candler. J.E., Designing invert drilling fluids to yield environmentally friendly drilled cuttings. IADC/SPE 74470, IADC/SPE drilling conference, Dallas, Tx, 2002.
Hakanson, L., Ecological risk index for aquatic pollution control, a sedimentological approach. Water Research, Vol. 14, p. 975–1001, 1980.
Hakanson, L., An ecological risk index for aquatic pollution control. A sedimentological approach. Water Research, Vol. 14, No. 8, 975–1001, 1980.
Hernandez, L., Probst, A., Probst, J. L., and Ulrich, E., Heavy metal distribution in some French forest soils: evidence for atmospheric contamination. The Science of the Total Environment, Vol. 312, p. 195–219, 2003.
Kabata-Pendias, A. and Pendias, H., Trace elements in soils and plants, 3rd Ed CRC Press: Boca Raton, FL, USA, 2007.   
Khan, AG., Role of soil microbes in the rhizospheres of plants growing on trace metal contaminated soils in phytoremediation. Journal of Trace Elements in Medicine and Biology, Vol. 18, p. 355–364, 2005.
Kotoky, P., Bora, B., Baruah, N., Baruah, J., Baruah, P., and Borah, G., Chemical fractionation of heavy metals in soils around oil installations, Assam. Chemical Speciation and Bioavailability, Vol. 15, No.4, p. 115–126, 2003.
Manta, D.S., Angelone, M., Bellanca, A., Neri, R., and Sprovieri, M., Heavy metals in urban soils: a case study from a city of Palermo (Sicily), Italy. Science of The Total Environment. Vol. 30, p. 229–243, 2002.
Marschner, H., Marschner’s mineral nutrition of higher plants. Academic press., 2012.
Messick, T. E., Chmiel, N. H., Golinelli, M. P., Langer, M. R., Joshua-Tor, L., and David, S. S., Noncysteinyl coordination to the [4Fe-4S]2+ cluster of the DNA repair adenine glycosylase MutY introduced via site-directed mutagenesis. Structural characterization of an unusual histidine-coordinated cluster. Biochemistry, Vol. 41, No.12, p. 3931–3942, 2002.
Miao, X., Hao, Y., Zhang, F., Zou, S., Ye, S., and Xie, Z., Spatial distribution of heavy metals and their potential sources in the soil of Yellow River Delta: a traditional oil field in China, Environmental Geochemistry and Health, Vol. 42, p.7–26, 2019.
Mico´, C., Recatala´, L., Peris, M., and Sa´nchez, J., Assessing heavy metal sources in agricultural soils of a European Mediterranean area by multivariate analysis. Chemosphere, Vol. 65, p. 863–872, 2006.
Mihailović, A., Budinski-Petković, L., Popov, S., Ninkov, J., Vasin, J., Ralević, N.M., and Vučinić Vasić, M., Spatial distribution of metals in urban soil of Novi Sad, Serbia: GIS-based approach. Journal of Geochemical Exploration, Vol. 150, p. 104–114, 2015.
Moreno, S., Marques, C., Santos, A., Santos, M., Castro, S.L., and Besson, M., Musical training improves verbal memory, reading abilities and pitch perception: Behavioral and electrophysiological evidence in 8-year-old non-musicians’ children. Cerebral Cortex, Vol. 19, p. 712–723, 2009.
Muller, G., Index of geoaccumulation in sediments of the Rhine River. Geo J, Vol. 2, p. 108–118, 1969.
Porrahim Najaf Abadi, Z., Dahrazma, B., Ghasemi, H., Mortazavi, M.S., and Taghipor, B., Sedimentological assessment and contamination of superficial sediments in Sirik and Jask Harbors with As and Hg. Journal of Stratigraphy and Sedimentology Researches, Vol. 25, No.2, p. 47–64, 2009. (In Persian).
Qaiser, M.S.H., Ahmad, l., Ahmad, S.R., Afzal, M., and Qayyum, A., Assessing Heavy Metal Contamination in Oil and Gas Well Drilling Waste and Soil in Pakistan. Polish Journal of Environmental Studies, Vol. 28, No. 2, p. 785–793, 2019.
Sameni, M., Dosescu, J., Moin, K., and Sloane, B.F., Functional imaging of proteolysis: stromal and inflammatory cells increase tumor proteolysis. Mol. Imaging, Vol. 2, p. 159–175, 2004.
Siegel F.R., Environmental Geochemistry of Potentially Toxic Metals.  Springer., 2002.
Suk, H. and Lee, K., Characterization of groundwater hydrochemical system through multivariate analysis: Clustering into groundwater zones. Groundwater, Vol. 37, p. 358–366, 1999.
Sutherland, R.A., Bed sediment–associated trace metals in an urban stream Oahu, Hawaii. Environmental Geology, Vol. 39, p. 611–627, 2000.
Yang, Z., Yang, D., Dyer, C., He, X., Smola, A., and Hovy, E., Hierarchical attention networks for document classification. In Proceedings of the 2015 Conference of NAACL, p. 1480–1489, 2015.
Zare Chahouki, MA., Data analysis in natural resources research using SPSS software, 2011. (In Persian).
Zhang, J. and Liu, C.L., Riverine composition and estuarine geochemistry of particulate metals in China-Weathering features, anthropogenic impact, and chemical fluxes. Estar. Coast. Shelf, Vol. 54, p. 1951–1070, 2002.
Zhang, XP, Deng, W., and Yang, XM., The background concentrations of 13 soil trace elements and their relationships to parent materials and vegetation in Xizang (Tibet), China. Journal of Asian Earth Sciences, Vol. 21, No. 2, p. 167–174, 2002.

  • Receive Date 26 August 2023
  • Revise Date 17 December 2023
  • Accept Date 17 January 2024