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آزادسازی فلزات سنگین از اجزای مختلف رسوبات غنی‌شده در ستون آبشویی | ||
| نشریه محیط زیست طبیعی | ||
| مقاله 1، دوره 68، شماره 4، دی 1394، صفحه 521-532 اصل مقاله (280.56 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/jne.2015.56926 | ||
| نویسندگان | ||
| حامد ارفع نیا* 1؛ فرخ اسدزاده2 | ||
| 1کارشناس‌ارشد گروه علوم خاک، دانشکدۀ کشاورزی، دانشگاه بوعلی سینا | ||
| 2استادیار گروه علوم خاک، دانشکدۀ کشاورزی، دانشگاه ارومیه | ||
| چکیده | ||
| سنجش فراهمی و تحرک فلزات سنگین به‌منظور فهم رفتار این فلزات در رسوبات و جلوگیری از پتانسیل خطرات زیست‌محیطی آنها ضروری است. آزمایش ستون آبشویی روی چهار نمونه رسوب با ویژگیهای فیزیکی و شیمیایی متفاوت غنی‌شده با نمک فلزات روی، کادمیوم، نیکل، مس و سرب برای تعیین میزان تحرک و چگونگی توزیع فلزات انجام شد. نتایج عصارهگیری متوالی رسوبات غنی‌شده نشان داد که جزء عمدۀ روی، نیکل و مس در جزء باقی‌مانده و اجزای عمدۀ کادمیوم، جزء تبادلی و معدنی است. دربارۀ سرب در رسوبات غنی‌شده جزء باقی‌مانده و معدنی بیشترین سهم را داشت. در رسوب 1 آب مقطر توانسته کادمیوم، روی و نیکل بیشتری را نسبت به مس و سرب متحرک سازد. در رسوبات رسی 3 و 4 آب مقطر سرب و مس بیشتری نسبت به کادمیوم، روی و نیکل متحرک ساخت. مس و سرب کمتر تحت تأثیر نوسانات pH آب منفذی قرار گرفتند. آزادسازی مس و سرب در رسوب 4 از جزء آلی معنادار بود. بر اساس درصد نسبی در جزء تبادلی در رسوب 1 غنی‌شده ترتیب تحرک فلزات قبل و بعد از آبشویی به‌صورت زیر بود که Cu<Pb<Zn = Ni<Cd، که نشان‌دهندۀ امکان تحرک کادمیوم در pH های اسیدی است. در بین ویژگیهای رسوبات pH در آب منفذی، به‌طور مستقیم و غیرمستقیم بر کلیۀ فرایندهای شیمیایی و به‌دنبال آن بر رفتار فلزات سنگین در رسوبات تأثیر‌گذار است. روش غنی‌سازی و آبشویی روشی مناسب برای ارزیابی خطرات زیست‌محیطی فلزات سنگین است. | ||
| کلیدواژه‌ها | ||
| رسوب؛ فلزات سنگین؛ غنی‌سازی؛ آزادسازی | ||
| عنوان مقاله [English] | ||
| Release of heavy metals after spiking and leaching from different sediment fractions | ||
| نویسندگان [English] | ||
| Hamed Arfania1؛ Farokh Asadzadeh2 | ||
| 1Urmia University | ||
| چکیده [English] | ||
| Measurement of availability and mobility of heavy metals in river sediments is required in order to understand the behavior of these metals and to prevent potential toxic hazards. Leaching column experiments were conducted for four sediment samples to determine the degree of mobility and the distribution of Zn, Cd, Ni, Cu, and Pb because of an application of spiked heavy metals in sediments. Sequential extraction results showed that in spiked sediments the major proportion of Zn, Ni and Cu were associated with residual fraction and major fractions of Cd was associated with exchangeable and mineral fractions and major fraction of Pb was associated with residual and mineral fractions. In sediment (1) distill water mobilized more Cd, Zn and Ni than Cu and Pb. In sediment (3) and (4) distill water mobilized more Pb and Cu than Cd, Zn and Ni. Therefore, Cu and Pb were least affected by the pore water pH volatility. The release of Pb and Cu were considerable from organic matter fraction in sediment (4). Based on relative percent in exchangeable fraction, the order of solubility was Cd > Ni = Zn > Pb > Cu for spiked sediments before and after leaching indicating possible mobility of Cd, Ni, and Zn. Among sediment properties the pH in pore water influences the behavior of heavy metals in sediments. Spiking and leaching approach is conducive for evaluating of heavy metals toxicity and mobility tests. | ||
| کلیدواژه‌ها [English] | ||
| Sediment, Spiking, Heavy metals, release | ||
| مراجع | ||
|
Baes, C.F., Mesmer, R.E., 1976.The hydrolysis of cations.Wiley, New York.489 p.
Basta, N.T.,Tbatabai, M.A., 1992. Effect of cropping systems on adsorption of metals by soils: III. Competitive adsorption.Soil Science. 153, 331-337.
Bately, G.E., Burton, G.A., Chapman, P.M., Forbes, V.E, 2002. Uncertainties in sediment quality weight-of-evidence (WHO) assessments.Human and Ecological Risk Assessment. 8, 1517-1547.
Bauycos, G. J., 1962. Hydrometer methods improved for making particle size of soils. Agronomy Journal. 56, 464-465.
Chapman, P.M., Wang, F., Janssen, C., Perssone, G., Allen, H.E., 1998. Ecotoxicology of metals in aquatic sediments binding and release bioavailability, risk assessment, and remediation. Canadian Journal of Fisheries and Aquatic Sciences. 55, 2221-2243.
Fengxiang, H.,Banin, A., 1997. Long-term transformation and redistribution of potentially toxic heavy metals in arid-zone soils incubated: I under saturated conditions.Water Air Soil Pollution. 95, 399-423.
Gomes, P.C., Fontes, M.P., Da Silva, A.G., Mendoca, E.S., Netto, A.R., 2001..Selectivity sequence and competitive adsorption of heavy metals by Brazilian soils.Soil Science Society of America Journal. 65, 1115-1121.
Gupta, S.K., Vollmer, M.K., Krebs, R., 1996. The importance of mobile, mobilisable and pseuo total heavy metal fractions in soil for three-level risk assessment and risk management.Science of the Total Environment. 178, 11-20.
He, Z.L., Zhang, M., Yang, X.E., Stoffella, P.J., 2006.Release behavior of copper and zinc from sandy soils. Soil Science Society of America Journal, 70, 1699-1707.
Hutchins, C.M., Teasdale, P.R., Lee, J., Simpson, S.L., 2007. The effect of manipulating sediment pH on the porewater chemistry of copper- and zinc-spiked sediments.Chemosphere. 69, 1089-1099.
Ianni, C., Magi, E., Rivaro, P., Ruggieri, N., 2000. Trace metals in Adriatic coastal sediments: Distribution and speciation pattern.Environmental Toxicology and Chemistry.78, 73-92.
King, C.K., Gale, S.A., Hyne, R.V., Stauber, J.L., Simpson, S.L., Hickey, C.W., 2006. Sensitivities of Australian and New Zealand amphipods to copper and zinc in waters and metal spiked sediments.Chemosphere. 63, 1466-1476.
Korfali, S.L., Davies, B.E., 2004. Speciation of metals in sediment and water in a river underlain by limestone: Role of carbonate species for purification capacity of rivers. Advances in Environmental Research. 8, 599-612.
LeClaire, J.P., Chang, A.C., Levesque, C.S., Sposito, G., 1984. Trace metal chemistry in arid-zone field soils amended with sewage sludge: IV. Correlation between zinc uptake and extracted soil zinc fractions.Soil Science Society of America Journal. 48, 509-513.
Lindsay, W.L., Norvell, W.A.,1987. Development of a DTPA soil test for zinc, iron, manganese, and copper.Soil Science Society of America Journal. 42, 421-428.
McKenzie, R.M., 1980. The adsorption of lead and other heavy metals on oxides of manganese and iron. Australian Journal of Soil Research, 18: 61-73..
Phillips, I.R., Lamb, D.T., Hawker, D.W., Burton, E.D., 2004. Effects of pH and salinity on copper, lead, and zinc sorption rates in sediments from Moreton Bay, Australia B. Environmental Toxicology and Chemistry. 73, 1041-1048.
Rowell, D.L., 1994. Soil science: Methods and application,” Longman Group, Harlow.345p.
Schreibber, M., Otta, M., Fedotov, S.P., Wennrich, R., 2005.Dynamic studies on the mobility of trace elements in soil and sediment samples influenced by dumping of residues of the Mulde River region in 2002.Chemosphere. 61, 107-115.
Simpson, S.L., Batley, G.E., 2003. Disturbances to metal partitioning during toxicity testing Fe(II)-rich estuarine porewaters and whole-sediments.Environmental Toxicology and Chemistry. 20, 2657-2661.
Simpson, S.L., Angel, B.M., Jolley, D.F., 2004. Metal equilibration in laboratory-contaminated (spiked) sediments used for development of whole-sediment toxicity tests.Chemosphere. 54, 597-609.
Sims, J.T., 1996. Lime requirement methods of soil analysis. Parts: Chemical methods. Madison, Wisconsin, USA. 491p.
Sipos, P., Nemeth, T., Kis, V.K., Mohai, I., 2008.Sorption of copper, zinc and lead on soil mineral phases.Chemosphere. 73, 461-469.
Sposito, G., Lund, J., Chang, A.C., 1983. Trace metal chemistry in arid-zone field soils amended with sewage sludge: I. Fractionation of Ni, Cu, Zn, Cd, and Pb in solid phases.Soil Science Society of America Journal. 46, 260-264.
Stover, R.C., Sommers, L.E., Silviera, D.J., 1976.Evaluation of metals in waste-water sludge.Journal of Water Pollution Control Federation. 48, 2165-2175.
Tack, F.M., Verloo, M.G., 1996.Impact of single reagent extraction of metals in a contaminated dredged sediment. Science of the Total Environment. 32, 29-36.
Tessier, A., Cambell, C., Bisson, M., 1979.Sequential extraction procedure for the speciation of particulate trace metals.Analytical Chemistry. 51, 844-885.
Temminghoff, E.J.M., VanderZee, S., deHann, F.A.M., 1997.Copper mobility in copper-contaminated sandy soil as affected by pH and solid and dissolved organic matter. Environmental Science and Technology. 31, 1109-1115.
Thomas, G.W., 1996. Soil pH and soil acidity. In: Klute, A. (Ed), Methods of soil analysis. Part 3.Chemical methods.Madison, Wisconsin, USA. pp. 475-490.
Turner, A., Millward, G.E., Roux, S.M., 2004. Significance of oxides and particulate organic matter in controlling trace metal partitioning in a contaminated estuary.Marine Chemistry.88, 179-192.
Valerie C., Rudy, S., Jiska, V., 2004.Assessment of acid neutralizing capacity and potential mobilization of trace metals from land-disposed dredged sediments.Science of the Total Environment. 333, 233-247. | ||
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