A novel analytical system involving hydride generation and gold-coated W-coil trapping atomic absorption spectrometry for selenium determination at ng l(-1) level

Date

2008-08-01

Author

Kula, I.
Arslan, Y.
Bakirdere, S.
Ataman, Osman Yavuz

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

47
views

0
downloads

A novel analytical technique was developed where gaseous hydrogen selenide formed by sodium tetra hydrobora te reduction is transported to and trapped on a resistively heated gold-coated W-coil atom trap for in situ preconcentration. Gold coating on W-coil was prepared by using an organic solution of Au. The atom trap is held at 165 degrees C during the collection stage and is heated up to 675 degrees C for revolatilization; analyte species formed are transported to an externally heated quartz T-tube where the atornization takes place and the transient signal is obtained. The carrier gas consisted of 112.5 ml min' At with 75 ml min(-1) H(2) during the collection step and 112.5 ml min(-1) At with 450 ml min(-1) H(2) in the revolatilization step. The half width of the transient signal obtained is less than 0.5 s. The RSD for the measurements was found to be 3.9% (n = 11) for 0.10 mu g l(-1) Se using peak height measurements.

Subject Keywords

Gold-coated tungsten coil atom trap, Selenium, Atomic absorption spectrometry, Hydride generation

URI

https://hdl.handle.net/11511/32222

Journal

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY

DOI

https://doi.org/10.1016/j.sab.2008,03.020

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Development of novel analytical methods for selenium, gold, silver and indium determination using volatile compound generation, atom trapping and atomic absorption spectrometry Arslan, Yasin; Ataman, Osman Yavuz; Department of Chemistry (2011) A novel analytical technique was developed where gaseous hydrogen selenide formed by sodium tetrahydroborate reduction is transported to and trapped on a resistively heated gold-coated W-coil atom trap for in situ preconcentration. The atom trap is held at 165 ºC during the collection stage and is heated up to 675 ºC for revolatilization; analyte species formed are transported to an externally heated quartz T-tube where the atomization takes place and the transient signal is obtained. For gold, a high volum...
A novel silica trap for lead determination by hydride generation atomic absorption spectrometry Korkmaz, DK; Ertas, N; Ataman, Osman Yavuz (2002-03-15) A novel silica trap for lead determination at concentration levels of ng/l was developed using hydride-generation atomic absorption spectrometry. The device consists of a 7.0-cm silica tubing which is externally heated to a desired temperature. The lead hydride vapor is generated by a conventional hydride-generation flow system. The trap is placed between the gas-liquid separator and silica T tube; the device traps analyte species at 500 degreesC and releases them when heated further to 750 degreesC. The ov...
A promising enzyme anchoring probe for selective ethanol sensing in beverages Soylemez, Saniye; Goker, Seza; Toppare, Levent Kamil (Elsevier BV, 2019-07-15) A newly designed amperometric biosensor for the determination of ethanol through one-step electrochemical coating of (4,7-di(thiophen-2-yl)benzo[c][1,2,5]selenadiazole-co-1H-pyrrole-3-carboxylic acid) (TBeSe-co-P3CA) on a graphite electrode is presented. It was aimed to propose a newly synthesized copolymer with enhanced biosensing properties as a novel sensor for the quantification of ethanol. The conjugated copolymer (TBeSe-co-P3CA) was prepared through electrochemical polymerization by potential cycling....
An acetylcholinesterase biosensor based on a conducting polymer using multiwalled carbon nanotubes for amperometric detection of organophosphorous pesticides Kesik, Melis; Kanik, Fulya Ekiz; Turan, Janset; Kolb, Marit; TİMUR, SUNA; Bahadir, Muefit; Toppare, Levent Kamil (2014-12-15) A novel amperometric biosensor based on a conducting polymer using multi walled carbon nanotube modified electrode was developed for detection of organophosphorus pesticides. Acetylcholinesterase (AChE) was successfully immobilized by covalent linkage on the modified graphite electrode. Carbon nanotubes were functionalized by electrochemical treatment. A conducting polymer; poly(4-( 2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)benzenamine) (poly( SNS-NH2)) was synthesized via electropolymerization to examine its ma...
A quantum chemical study of nitric oxide reduction by ammonia (SCR reaction) on V2O5 catalyst surface

Soyer, Sezen; Uzun, Alper; Senkan, Selim; Önal, Işık (2006-12-15)

The reaction mechanism for the selective catalytic reduction (SCR) of nitric oxide by ammonia on (010) V2O5 surface represented by a V2O9H8 cluster was simulated by means of density functional theory (DFT) calculations performed at B3LYP/6-31G** level. The computations indicated that SCR reaction consisted of three main parts. For the first part, ammonia activation on V2O5 was investigated. Ammonia was adsorbed on Bronsted acidic V-OH site as NH4+ species by a non-activated process with an exothermic relati...

Citation Formats

I. Kula, Y. Arslan, S. Bakirdere, and O. Y. Ataman, “A novel analytical system involving hydride generation and gold-coated W-coil trapping atomic absorption spectrometry for selenium determination at ng l(-1) level,” SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY, pp. 856–860, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/32222.