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Sereshti, H., Bakhtiari, S., Toghyani, R., Samadi, S., Besharati-Seidani, T., Mahmoodi, N.O.. (1393). An Investigation on Heavy Metals Bio-Sorption by Azolla filiculoides in the International Anzali Wetland. , 8(2), 377-386. doi: 10.22059/ijer.2014.728
H. Sereshti; S. Bakhtiari; R. Toghyani; S. Samadi; T. Besharati-Seidani; N.O. Mahmoodi. "An Investigation on Heavy Metals Bio-Sorption by Azolla filiculoides in the International Anzali Wetland". , 8, 2, 1393, 377-386. doi: 10.22059/ijer.2014.728
Sereshti, H., Bakhtiari, S., Toghyani, R., Samadi, S., Besharati-Seidani, T., Mahmoodi, N.O.. (1393). 'An Investigation on Heavy Metals Bio-Sorption by Azolla filiculoides in the International Anzali Wetland', , 8(2), pp. 377-386. doi: 10.22059/ijer.2014.728
Sereshti, H., Bakhtiari, S., Toghyani, R., Samadi, S., Besharati-Seidani, T., Mahmoodi, N.O.. An Investigation on Heavy Metals Bio-Sorption by Azolla filiculoides in the International Anzali Wetland. , 1393; 8(2): 377-386. doi: 10.22059/ijer.2014.728

An Investigation on Heavy Metals Bio-Sorption by Azolla filiculoides in the International Anzali Wetland

International Journal of Environmental Research
مقاله 15، دوره 8، شماره 2، تیر 2014، صفحه 377-386    اصل مقاله (658.27 K)
نوع مقاله: Original Research Paper
شناسه دیجیتال (DOI): 10.22059/ijer.2014.728
نویسندگان
H. Sereshti* 1؛ S. Bakhtiari1؛ R. Toghyani1؛ S. Samadi1؛ T. Besharati-Seidani2؛ N.O. Mahmoodi2
1Department of Chemistry, Faculty of Science, University of Tehran, Tehran, Iran
2Department of Chemistry, Faculty of Science, University of Guilan, 41335-1914, Rasht, Iran
چکیده
The ultrasound assisted emulsification microextraction (USAEME) method followed by
inductively coupled plasma-atomic emission spectrometry (ICP-AES) was used for preconcentration and
determination of bismuth (Bi), indium (In) and lead (Pb) in the plant Azolla filiculoides Lam. Calix [4] pyrrole was used as a chelating agent and tetrachloroethylene was selected as extraction solvent. The main parameters of the USAEME method were optimized by using response surface methodology (RSM). The optimal conditions were as follows: 130 μL for volume of extraction solvent, 4 min for sonication time, 6.75 (w/v %) for salt concentration, 890 mg/L for concentration of chelating agent and 7.5 for pH. The calibration graphs were linear in the range of 1-1500 μg/L for Bi and In, and 1-1000 μg/L for Pb with the determination coefficients (R2) of 0.9983, 0.9974 and 0.9997, respectively. The limits of detection (LODs) for Bi, In and Pb were 0.57, 0.76 and 0.84 μg/L, respectively. Under the optimal conditions, the method was successfully applied to the determination of Bi, In and Pb in Azolla filiculoides Lam. tissues in Anzali wetland and satisfactory relative recoveries (94–97%) were achieved.
کلیدواژه‌ها
Heavy metals؛ Anzali Wetland؛ Azolla filiculoides؛ Experimental design؛ ICP-AES
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