[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Accepted articles :: Archive :: Search :: Submit :: Contact ::
:: Volume 8, Issue 3 (5-2021) ::
jehe 2021, 8(3): 329-342 Back to browse issues page
Investigation of Ecological Risk (ER) and Available Ratio (AR) of some heavy metals in drill cutting of Ahvaz Oil Field in 2019
Zohre Lajmiri Orak , Sima Sabzalipour * , Ebrahim Panahpour, Sina Attarroshan, Haman Tavakkoli
Department of Environment, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran
Abstract:   (114 Views)
Background: Drill cutting is one of the largest volumes of waste generated in oil and gas exploration and production activities, which contain toxic substances, especially heavy metals, which are potentially harmful to the ecosystem. This study aimed to investigate the pollution indices, available ratio, and ecological risk of some heavy metals in the Drill cutting of the Ahvaz oil field in southwestern Iran.
Methods: 30 samples of drill cutting were collected from 6 wells in 6 different depths (1250-2350 m), and there were sent to the laboratory. The total and available concentration of metals extracted by Aqua Regia method and by DTPA extracting solution and metals were analyzed by Inductively Coupled Plasma Optical Emission Spectroscopy (ICP-OES) and Atomic Absorption Spectrophotometry(AAS). The soil chemical and physical parameters such as organic matter, EC, and pH were also measured.
Results: The mean total concentration (Sr, Ba, Zn, Cu, Pb, Cd) in the drill cutting samples studied 1212, 1413, 117.66, 209.83, 342.66, 2.36 mg/Kg, respectively and the available amounts of these elements 12.29, 0.50, 5.14, 14.71, 23.80 and 0.46 mg/kg were measured. The highest amount of enrichment factor 20.61 was related to Pb and the highest amount of pollution index 9.15 was related to Cd, respectively. The highest available ratio (26.40) was related to Cd. The environmental risk potential index (852.91) showed that drill cuttings have very high environmental potential risk. Also, there is a negative correlation between pH and the availability ratios of Pb, Cd, and Ba in drill cutting(p<0.05).
Conclusion: The average values ​​of the potential ecological risk index (RI)  of the studied elements in the drill cutting of the Ahvaz oil field were in the range of very high environmental potential risk. The results obtained from the enrichment factor(EF) and the pollution index(PI) showed that the source of contamination of the studied metals is anthropogenic activities such as oil drilling activities in the study area. Therefore, continuous monitoring of the concentration of metal contaminants in the drill cuttings as well as the use of heavy metal stabilization methods in the drilled areas is essential.
Keywords: Heavy metals, Pollution factors, Ecological Risk Assessment
Full-Text [PDF 1150 kb]   (61 Downloads)    
Type of Study: Research | Subject: Special
Received: 2021/01/28 | Accepted: 2021/05/24 | Published: 2021/06/21
Add your comments about this article
Your username or Email:


XML   Persian Abstract   Print

Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

Lajmiri Orak Z, Sabzalipour S, Panahpour E, Attarroshan S, Tavakkoli H. Investigation of Ecological Risk (ER) and Available Ratio (AR) of some heavy metals in drill cutting of Ahvaz Oil Field in 2019. jehe. 2021; 8 (3) :329-342
URL: http://jehe.abzums.ac.ir/article-1-860-en.html

Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 8, Issue 3 (5-2021) Back to browse issues page
مجله مهندسی بهداشت محیط Journal of Environmental Health Enginering
Persian site map - English site map - Created in 0.04 seconds with 30 queries by YEKTAWEB 4341