مطالعه میزان آلودگی خاک به ﻓﻠﺰﺍﺕ ﺳﻨﮕﻴﻦ کادمیوم، سرب و مس در اراضی صنایع نفتی منطقه غرب کارون ، استان خوزستان ، ایران

نوع مقاله: مقالات پژوهشی

نویسنده

مدیر تیم واکنش در شرایط اضطراری در یکی از میادین بزرگ نفتی استان خوزستان

10.22038/jreh.2020.40536.1305

چکیده

زمینه و هدف:
افزایش جمعیت منجر به گسترش صنایع شده و مدیریت نادرست صنایع منجر به آلودگی اراضی و آسیب های جبران ناپذیر به طبیعت و موجودات زنده می گردد. لذا بررسی نقش مراکز صنعتی در آلودگی محیط زیست و از آن جمله در خاک، یکی از مهم‌ترین اقدامات در زمینه کنترل آلودگی هاست. مطالعه حاضر با هدف ارزیابی میزان آلودگی خاک سطحی به فلزات سنگین و در معرض صنایع نفت انجام شد.
مواد و روش‌ها:
در این تحقیق برای اندازه گیری میزان فلزات سنگین در مجموع تعداد 15 نمونه خاک سطحی در سه تکرار و از عمق 30-0 سانتی متری خاک برداشت شد. سنجش عناصر سنگین به روش طیف‌سنجی پلاسمای جفت ‌شده القایی انجام پذیرفت.
یافته‌ها:
بر اساس نتایج میانگین میزان ﻏﻠﻈﺖ عناصر کادمیوم، سرب و مس در خاک میدان نفتی به ترتیب 1±40/2، 91/5±89/8 و 81/52±83/55 میلی گرم در کیلوگرم به دست آمد.
نتیجه گیری:
میانگین مقادیر فلزات سنگین کادمیوم و مس از میانگین جهانی بالاتر و میانگین مقادیر سرب میانگین جهانی پایین تر به دست آمد. همچنین با توجه به درجه ی سمیت بالای کادمیوم می توان بیشترین خطر ناشی از آلودگی خاک را به کادمیوم اختصاص داد. محاسبه میزان آلودگی هر یک از سه عنصر و برای پنج ایستگاه نمونه گیری نشان داد که خاک منطقه نفتی نسبت به کادمیوم بیش از دو عنصر دیگر دارای آلودگی بوده و صنایع نفت در آلودگی خاک به کادمیوم بیش از دیگر عناصر اثرگذار بوده است. همچنین با محاسبه میزان شاخص های آلودگی خاک در ایستگاه های نمونه برداری شده و مقایسه آن ها نشان داد که همانگونه که انتظار می رفت خاک نواحی بهره برداری و سر چاه نفت نسبت به دیگر نواحی دارای میزان آلودگی شدیدتری بوده و اتخاذ تدابیر زیست محیطی شدیدتری برای این مناطق ضروری است.

کلیدواژه‌ها


عنوان مقاله [English]

Study of The Rate of Soil Pollution to Heavy Metals Cadmium, Lead and Copper in Oil Industries Land at West Karun Region, Khuzestan Province, Iran

نویسنده [English]

  • Iman Shahidi Kaviani
Emergency Response Team Leader
چکیده [English]

Background and purpose:
Population growth leads to the expansion of industries and improper management of industries leads to land pollution and irreparable damage to nature and living organisms. Therefore, studying the role of industrial centers in environmental pollution, including soil, is one of the most important measures in the field of pollution control. The aim of this study was to evaluate the rate of surface soil contamination with heavy metals exposed to the oil industry.
Materials and methods:
In this study, to measure the rate of heavy metals, a total of 15 soil samples were taken from 5 stations with 3 replications and from depth of 0-30 cm. Heavy element measurements were performed by induction coupled plasma spectroscopy.
Results:
Based on the results the average amount of Cadmium, Lead and Copper in the soil were 2.40 ± 1, 8.89 ± 5.91 and 55.83 ± 52.88 mg / kg respectively.
Conclusion:
The average values of Cadmium and Copper were higher and the average values of lead were lower than the global average. Also, due to the high degree of toxicity of Cadmium, the highest risk of soil contamination can be attributed to Cadmium. The measurement of pollution of each of the three elements and for five sampling stations showed that the soil of the oil region was more polluted than Cadmium than the other two elements and the oil industry was more effective in Cadmium pollution than other elements. By measurement and comparison, the rate of soil pollution indices in the sampled zones, it showed that, as expected, the soil of the processing areas and the well head zones had more severe pollution than other areas and adopted more strict environmental control measures are essential on these areas.

کلیدواژه‌ها [English]

  • آلودگی خاک
  • فلزات سنگین
  • شاخص آلودگی
  • مناطق نفتی غرب کارون
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