Development of a sensitive closed batch vessel hydride generation atomic absorption spectrometry method for the determination of cadmium in aqueous samples

Hydride generation atomic absorption spectrometry was used as a simple, sensitive, and economical method for the determination of cadmium at trace levels. This study includes a stepwise optimization of all parameters that have an impact on the production, transport, and atomization of cadmium hydrid...

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Bibliographic Details
Published in:Instrumentation science & technology 2018-11, Vol.46 (6), p.645-655
Main Authors: Büyükpınar, Çağdaş, Bekar, Büşra, Maltepe, Esra, Chormey, Dotse Selali, Turak, Fatma, San, Nevin, Bakırdere, Sezgin
Format: Article
Language:English
Subjects:
Absorption
Absorption spectroscopy
Atomic absorption analysis
Atomic absorption spectrometry (AAS)
Atomizing
Cadmium
Carrier gases
Detection limits
drinking water
Flow rates
Flow velocity
hydride generation
Hydrides
Optimization
Scientific imaging
Sodium
Spectral analysis
Spectrometry
Trace levels
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Summary:Hydride generation atomic absorption spectrometry was used as a simple, sensitive, and economical method for the determination of cadmium at trace levels. This study includes a stepwise optimization of all parameters that have an impact on the production, transport, and atomization of cadmium hydride for rapid determination due to the unstable nature of the hydride produced. The cell temperature for atomization, pump period, and flow rate of carrier gas were varied, and the best conditions were defined to obtain lower detection limits. In addition, the acid and sodium borohydride concentrations were optimized since they directly affect the production of the cadmium hydride. Under optimum experimental conditions, the hydride generation efficiency was greatly enhanced to record optimized analytical signals. The accuracy of the method was determined by the analysis of a certified reference material, and the results were in good agreement with the certified value. A linear dynamic range for cadmium was observed from 0.10 to 2.0 µg/L. High sensitivity was obtained with a limit of detection of 0.029 µg/L.
ISSN:1073-9149
1525-6030
DOI:10.1080/10739149.2018.1439060