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Sensitivity improvement for antimony determination by using in-situ atom trapping in a slotted quartz tube and flame atomic absorption spectrometry
Date
2012-11-01
Author
TİTRETİR DURAN, SERAP
Sik, Ahmet Inanc
ARSLAN, YASİN
Ataman, Osman Yavuz
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Significant improvement has been achieved for antimony determination using a slotted quartz tube (SQT) as an atom trap (AT) for in situ preconcentration and flame atomic absorption spectrometry (FAAS). The suggested technique consists of trapping analyte species during ordinary nebulization followed by releasing the collected analyte via introducing organic solvent. Procedures and analytical figures of merit have been presented for the techniques called FAAS. SQT-FAAS and finally SQT-AT-FMS with the relevant comparisons. Analytical parameters, namely composition of the aqueous medium, sample flow rate, flame conditions, distance between burner head and SQT, sampling period and type of organic solvent and its volume have been optimized. Using SQT-AT-FAAS, a sensitivity enhancement of 369 fold has been obtained, 3 s limit of detection was 3.91 mu g L-1 when 25.0 mL of sample was collected in 4.0 min. Interference effects of some elements on antimony signal were studied.
Subject Keywords
Antimony
,
Flame atomic absorption spectrometry
,
Slotted quartz tube
URI
https://hdl.handle.net/11511/31577
Journal
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
DOI
https://doi.org/10.1016/j.sab.2012.09.001
Collections
Graduate School of Natural and Applied Sciences, Article
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SENSITIVITY ENHANCEMENT FOR SLOTTED QUARTZ TUBE FLAME ATOMIC ABSORPTION SPECTROMETRY USING A GAS SCREEN
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Sensitive determination of bismuth by flame atomic absorption spectrometry using atom trapping in a slotted quartz tube and revolatilization with organic solvent pulse
Kilinc, Ersin; BAKIRDERE, Sezgin; AYDIN, FIRAT; Ataman, Osman Yavuz (2012-07-01)
Sensitivity of flame atomic absorption spectrometry (FAAS) for Bi determination was improved by slotted quartz tube (SQT) that was used also for atom trapping (AT). The trapped analyte was released by aspirating a small volume of organic solvent after a reasonable analyte collection time. Sensitivity was improved by 2.9 times by SQT-FAAS and 256 times by SQT-AT-FAAS with respect to FAAS. Optimum trapping period was found to be 6.0 min (36.0 mL of solution). Limit of detection (LOD) for SQT-AT-FAAS was found...
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A simple device for the reduction of nonspectral interferences in flame atomic absorption spectrometry is proposed. It has been reported that the use of a gas screen (GS) system together with a slotted quartz tube (SQT) enhances the residence time of analyte atoms in measurement zone even more than the SQT alone. This combination causes enhancement of sensitivity and improves the reproducibility of absorbance measurements. In addition, it protects the optical windows of the atomic absorption spectrometer. T...
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S. TİTRETİR DURAN, A. I. Sik, Y. ARSLAN, and O. Y. Ataman, “Sensitivity improvement for antimony determination by using in-situ atom trapping in a slotted quartz tube and flame atomic absorption spectrometry,”
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY
, pp. 63–68, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/31577.