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بررسی میزان آلودگی و غنیشدگی فلزات سنگین (مطالعۀ موردی: شهرک صنعتی شیراز و اراضی اطراف آن) | ||
نشریه علمی - پژوهشی مرتع و آبخیزداری | ||
مقاله 4، دوره 74، شماره 1، خرداد 1400، صفحه 37-51 اصل مقاله (1.34 M) | ||
نوع مقاله: مقاله پژوهشی | ||
شناسه دیجیتال (DOI): 10.22059/jrwm.2021.314260.1549 | ||
نویسندگان | ||
اسفندیار جهانتاب* 1؛ علی نجمالدین2 | ||
1استادیار گروه مرتع و آبخیزداری، دانشکدۀ کشاورزی، دانشگاه فسا، فسا، ایران. | ||
2پژوهشگر پسا دکتری زمینشناسی زیستمحیطی، گروه زمینشناسی، دانشکدۀ علوم، دانشگاه فردوسی مشهد، مشهد، ایران. | ||
چکیده | ||
آلودگی فلزات سنگین یکی از جدیترین مشکلات زیستمحیطی است که در سراسر دنیا در حال گسترش میباشد. هدف از این پژوهش تعیین میزان آلودگی و غنیشدگی فلزات سنگین در داخل و اراضی اطراف شهرک صنعتی شیراز است. برای رسیدن به این هدف، تعداد 20 نمونه خاک سطحی از عمق 0 تا 15 سانتیمتر از داخل و اطراف شهرک صنعتی شیراز برداشت شده و غلظت فلزات سرب، کروم، آلومینیم، منگنز، مس، روی، استرانسیم، وانادیم، نیکل، کبالت، اسکاندیم، آهن و آرسنیک در آنها با استفاده از روش ICP-MS بررسی شد. نتایج نشان داد غلظت میانگین عناصر مس، سرب، منگنز، کروم، آلومینیم، روی، استرانسیم، وانادیم، نیکل، کبالت، آهن، آرسنیک و اسکاندیم به ترتیب 75، 9/87، 6/541، 3/143، 8/21804، 4/275، 9/439، 3/173، 4/55، 0/12، 3/50579، 8/4 و 7/4 میلیگرم و بر کیلوگرم میباشد. نتایج نشان داد که میانگین غلظت همۀ عناصر به جز آلومینیم (8/21804 میلیگرم بر کیلوگرم) و اسکاندیم (7/4 میلیگرم بر کیلوگرم) بسیار بیشتر از مقادیر غلظت این عناصر در خاکهای جهانی است. علاوه بر این، در مقایسه با استانداردهای کشورهای چین و کانادا نیز عناصر مس، سرب، روی، وانادیم و کروم غلظتهای بسیار بیشتری از مقادیر استاندارد را نشان میدهند. محاسبۀ ضریب غنیشدگی عناصر مذکور در نمونههای خاک نشاندهندۀ غنیشدگی زیاد عناصر مس (32/8)، سرب (42/5)، روی (04/7)، استرانسیم (15/5)، وانادیم (04/5) و کروم (34/5) است. نتایج تحقیق حاضر گویای آن است که خاکهای منطقه آلوده به فلزات مس، سرب، وانادیم، منگنز و روی هستند، لذا پیشنهاد میشود بایستی با روشهای مختلف سعی در کاهش فلزات در محیط داشت. | ||
کلیدواژهها | ||
فلزات سنگین؛ آلودگی خاک؛ فعالیتهای صنعتی؛ شاخص غنی شدگی؛ شاخص زمین انباشت | ||
عنوان مقاله [English] | ||
investigation of Heavy Metal Contamination and Enrichment (Case Study: Shiraz Industrial Town and surrounding Lands) | ||
نویسندگان [English] | ||
Esfandiar Jahantab1؛ Ali Najmeddin2 | ||
1Department of Range and Watershed Management, Faculty of Agriculture, Fasa University, Fasa, Iran | ||
2Department of Geology, College of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran. | ||
چکیده [English] | ||
Heavy metal pollution is one of the most serious environmental problems that is spreading around the world. The purpose of this study was to determine the rate of pollution and enrichment of heavy metals inside and around the industrial town of Shiraz. For this aim, 20 surface soil samples were gathered from a depth of 0 to 15 cm from inside and around Shiraz industrial town, and the concentrations of Pb, Cr, Al, Mn, Cu, Zn, St, V, N, Co, Sc, Fe As was evaluated using the ICP-method MS. The results showed that the average concentrations of Cu, Pb, Mn, Cr, Al, Zn, St, V, Ni, Co, Fe, As and Sc are 75, 87.9, 541.6, 143.3, 21804.8, 275.4, 439.9, 173.3, 55.4, 12.0, 50579.3, 4.8, and 4.7 mg / kg, respectively. The results showed that the average concentration of all elements except Al (21804.8 mg/kg) and Sc (4.7 mg/kg) is much higher than the concentration of these elements in global soils. In addition, Cu, Pb, Zn, V and Cr show much higher concentrations than standard Chinese and Canadian standards. Calculation of the enrichment coefficient of the mentioned elements in soil samples indicates high enrichment of Cu (8.32), Pb (5.42), Zn (7.04), St (5.15), V (5.04), and Cr (5.34). The results of the present study indicate that the soils of the region are contaminated with Cu, Pb, V, Mn and Zn. Therefore, it is suggested to reduce metals in the environment by different methods. | ||
کلیدواژهها [English] | ||
Heavy metals, Soil pollution, Industrial activities, enrichment index, Geoaccumulation Index | ||
مراجع | ||
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