caa a22 4500 46321983X CHVBK 20180405153208.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1134/S1061934807040077 doi (NATIONALLICENCE)springer-10.1134/S1061934807040077 Novel solid-phase extraction and preconcentration technique coupled with ICP-AES for the determination of Cr(III), Ni(II), and Zn(II) in various water samples [Elektronische Daten] [K. Suvardhan, K. Suresh Kumar, D. Rekha, K. Kiran, B. Jaya Raj, P. Chiranjeevi] Newly synthesized 2-propylpiperidine-1-carbodithioate (2-PPC) was used for the extraction of Cr(III), Ni(II), and Zn(II) from various water samples. In the present investigation, the use of a syringe loaded with sorbent for the separation and enrichment of Cr(III), Ni(II), and Zn(II) prior to their determination by inductively coupled plasma-atomic emission spectrometry (ICP-AES) was proposed to substitute the batch and column techniques. The described method was compared with the column technique with respect to fastness, simplicity, recovery, and risk of contamination. The syringe was loaded with 1.0 g of sorbent in order to retain the analyte elements. Next, 7.0 mL of sample solution (pH 5.0 ± 0.2) was drawn into the syringe in 15 s and discharged over 15 s. Then, an eluent (3.0 M HCl) was drawn into the syringe and ejected back to desorb the analyte elements. At the optimum conditions, the percentage recoveries of Cr(III), Ni(II), and Zn(II) were in the range of 94.50 to 99.62% with a standard deviation (S.D.) of 0.03%. The elements could be concentrated by drawing and discharging several portions of sample successively and eluting only one time. The detailed study of various interferences proved the method to be highly selective. The risk of contamination is less than that with the column technique. The method was successfully applied to the determination of Cr(III), Ni(II), and Zn(II) in spiked and natural water samples. The results obtained are in good agreement with those obtained by the reported methods at the 95% confidence level. Pleiades Publishing, Ltd., 2007 Suvardhan K. Environmental Monitoring Laboratory, Department of Chemistry, S.V. University, 517502, Tirupati, A.P., India aut Suresh Kumar K. Environmental Monitoring Laboratory, Department of Chemistry, S.V. University, 517502, Tirupati, A.P., India aut Rekha D. Environmental Monitoring Laboratory, Department of Chemistry, S.V. University, 517502, Tirupati, A.P., India aut Kiran K. Department of Environmental Sciences, S.V. University, 517502, Tirupati, A.P., India aut Jaya Raj B. Department of Mathematics, S.V. University, 517502, Tirupati, A.P., India aut Chiranjeevi P. Environmental Monitoring Laboratory, Department of Chemistry, S.V. University, 517502, Tirupati, A.P., India aut Journal of Analytical Chemistry Nauka/Interperiodica 62/4(2007-04-01), 336-341 1061-9348 62:4<336 2007 62 10809 https://doi.org/10.1134/S1061934807040077 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1061934807040077 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Suvardhan K. Environmental Monitoring Laboratory, Department of Chemistry, S.V. University, 517502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Suresh Kumar K. Environmental Monitoring Laboratory, Department of Chemistry, S.V. University, 517502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Rekha D. Environmental Monitoring Laboratory, Department of Chemistry, S.V. University, 517502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Kiran K. Department of Environmental Sciences, S.V. University, 517502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Jaya Raj B. Department of Mathematics, S.V. University, 517502, Tirupati, A.P., India aut NATIONALLICENCE 700 1- Chiranjeevi P. Environmental Monitoring Laboratory, Department of Chemistry, S.V. University, 517502, Tirupati, A.P., India aut NATIONALLICENCE 773 0- Journal of Analytical Chemistry Nauka/Interperiodica 62/4(2007-04-01), 336-341 1061-9348 62:4<336 2007 62 10809 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer