عنوان مقاله [English]
In the present study, in an efficient and selective method, Thorin as a reagent was used by forming colour in the alkaline water–acetone media for direct spectrophotometric determination of lithium ion in the coastal seawater of Chabahar bay. Affective factors on the lithium-thorin complex formation reaction such as reaction time, concentration of thorin and the percent of potassium hydroxide and acetone were studied and optimized. Under optimum conditions, the limit of detection, linearity range relative and standard deviation of method were obtained as 0.039 mg/L, 0.10-1.3 mg/L, 9.11% (n =7), respectively and the average concentration of lithium in seawater of Chabahar Bay was estimated as 0.173 mg/L. Furthermore the effect of different depth on the dispersal of lithium in Chabahar Bay was investigated. The results showed that there were no significant differences among Li concentrations in different depths.
 Bouman, C. Elliott, T. & Vroon, P. Z. Lithium inputs to subduction zones, Chemical Geology. vol. 212(1–2), pp. 59-79, 2004.
 El Balkhi, S. Megarbane, B. Poupon, J. Baud, F.J. & Galliot-Guilley, M. Lithium poisoning: is determination of the red blood cell lithium concentration useful?, Clin Toxicol (Phila). vol. 47(1), pp. 8-13, 2009.
 Haiping, S. & Tabata, M. Separation and transport of lithium of 10-5M in the presence of sodium chloride higher than 0.1 M by 2,3,7,8,12,13,17,18-octabromo-5,10,15,20-tetrakis(4-sulfonatop henyl)porphyrin, Talanta. vol. 49, pp. 603-610, 1999.
 Kraytsberg, A. & Ein-Eli, Y. Review on Li–air batteries—Opportunities, limitations and perspective, Journal ofPower Sources. vol. 196(3), pp. 886-893, 2011.
 Sadyrbaeva, T.Z. Recovery of cobalt(II) by the hybrid liquid membran-electrodiyaliss-electrodiyaliss process,Electrochimica Acta. vol. 133, pp. 161-168, 2014.
 Ben-Zwi, N. The Determination of Lithium in Dead Sea Water by Atomic Absorption Spectrophotometry, Israel Journal of Chemistry. vol. 10(5), pp. 967-969, 1972.
 Chan, L.H. Alt, J.C. & Teagle, D.A.H. Lithium and lithium isotope profiles through the upper oceanic crust: a study of seawater–basalt exchange at ODP Sites 504B and 896A, Earth and Planetary Science Letters. vol. 201(1), pp. 187-201, 2002.
 Fujinaga, T. Kuwamoto, T. Nakayama, E. & Tanaka, S. Determination of the lithium and rubidium in sea water by double channel flame emission spectrophotometry, Journal of the Oceanographical Society of Japan. vol. 36(4), pp. 196-200, 1980.
 Riley, J.P. & Tongudai, M. The lithium content of sea water, Deep Sea Research and Oceanographic Abstracts. vol. 11(4), pp. 563-568, 1964.
 Soldan, A.L. & Curtius, A.J. Determination of lithium in sea water by atomic absorption and by flame emission spectrophotometry, Microchimica Acta. vol. 67(1-2), pp. 167-171, 1977.
 Tabata, M. Nishimoto, J. & Kusano, T. Spectrophotometric determination of lithium ion using a water-soluble octabromoporphyrin in aqueous solution, Talanta. vol. 46(4), pp. 703-709, 1998.
 Schrauzer, G.N. Lithium: occurrence, dietary intakes, nutritional essentiality, J Am Coll Nutr. Vol. 21(1), pp. 14-21, 2002.
 Johnson, F.N. The Use 01 Fish in Studying the Behavioral Effects of Lithium. Phannacopsychiat, Vol. 14, pp. 208-212, 1981.
 Marczenko, Z. Balcerzak, M. & Kloczko, E. Separation, Preconcentration and Spectrophotometry in Inorganic Analysis, Elsevier Science. 2000.
 Aral, H. & Vecchio-Sadus, A. Lithium: Environmental Pollution and Health Effects, In J.O. Nriagu (Ed.), Encyclopedia of Environmental Health. p.p 499-508, 2011.
 Uesugi, K. & Murakami, T. Spectrophotometric determination of lithium in sea water using thorin, Bunseki kagaku. vol. 15(5), pp. 482-487, 1966.
 Standardization News: SN: American Society for Testing and Materials, 1992.