caa a22 4500 46790202X CHVBK 20180406152821.0 cr unu---uuuuu 170328e20061201xx s 000 0 eng 10.1007/s10661-006-9581-2 doi (NATIONALLICENCE)springer-10.1007/s10661-006-9581-2 Spectrophotometric Determination of Se (IV) in Environmental Samples Using a Novel Oxidative Coupling Reagent [Elektronische Daten] [P. Subrahmanyam, B. Krishnapriya, K. Suvardhan, D. Rekha, P. Krishna, G. Rao, Y. Lingappa, B. Reddy, B. Jayaraj, P. Chiranjeevi] A rapid, highly sensitive and selective spectrophotometric method for the determination of traces of selenium (IV) is described. The method is based on oxidation of oxidation of 3-methyl-2-benzothiazolinone hydrazone hydrochloride (MBTH) by selenium (IV) followed by coupling reaction with Piperazine in neutral medium to give pink colored derivative with λ max 547nm and is stable for more than 36h at 35°C. Beer's law is obeyed for selenium(IV) in the concentration range of 0.02-3.7μg ml−1 at the wave length of maximum absorption. The optimum reaction conditions and other analytical parameters were investigated to enhance the sensitivity of the present method. The detailed study of various interferences made the method more selective. The proposed method was successfully applied to the analysis of Selenium in polluted water, natural water samples, plant material, soil samples, synthetic mixtures and biological samples. The results obtained were agreed with the reported methods at the 95% confidence level. The performance of proposed method was evaluated in terms of Student's t-test and Variance ratio f-test which indicates the significance of proposed method over reported method. Springer Science+Business Media B.V., 2007 Selenium (IV) nationallicence Oxidation nationallicence Piperazine nationallicence 3-methyl-2-benzothiazolinone hydrazone hydrochloride (MBTH) nationallicence Spectrophotometry nationallicence Environmental samples nationallicence Subrahmanyam P. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut Krishnapriya B. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut Suvardhan K. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut Rekha D. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut Krishna P. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut Rao G. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut Lingappa Y. Department of Chemistry, Yogivemana university, Kadapa, A.P., India aut Reddy B. Department of Physics, S. V. University, 517 502, Tirupati, A.P., India aut Jayaraj B. Department of Mathematics, S. V. University, 517 502, Tirupati, A.P., India aut Chiranjeevi P. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut Environmental Monitoring and Assessment Springer Netherlands 123/1-3(2006-12-01), 431-437 0167-6369 123:1-3<431 2006 123 10661 https://doi.org/10.1007/s10661-006-9581-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10661-006-9581-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Subrahmanyam P. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Krishnapriya B. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Suvardhan K. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Rekha D. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Krishna P. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Rao G. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Lingappa Y. Department of Chemistry, Yogivemana university, Kadapa, A.P., India aut NATIONALLICENCE 700 1- Reddy B. Department of Physics, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Jayaraj B. Department of Mathematics, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Chiranjeevi P. Environmental Monitoring Laboratory, Department of Chemistry, S. V. University, 517 502, Tirupati, A.P., India aut NATIONALLICENCE 773 0- Environmental Monitoring and Assessment Springer Netherlands 123/1-3(2006-12-01), 431-437 0167-6369 123:1-3<431 2006 123 10661 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer