Determination of strontium in human tooth enamel by flameless atomic-absorption spectrometry

Helsby, Christine A.

doi:10.1016/0039-9140(77)80184-7

Cited by 13 publications

(1 citation statement)

References 8 publications

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“…Therefore, the determination of strontium is important, and several instrumental methods are used to determine strontium, such as atomic absorption spectrometry (Burguera et al 1999;Helsby et al 1977), flame photometry (Slevin, Györy-Szebényi, and Svehla 1972), ICP-AES (Piette, Desmet, and Dams 1994;Vandecasteele et al 1990), etc. In spite of providing an accurate determination, these methods are not appropriate because they demand high cost and sample pretreatment.…”

Section: Introductionmentioning

confidence: 99%

Construction of Strontium PVC-Membrane Sensor Based on Salicylaldehyde Thiosemicarbazone

Zamani

2008

Analytical Letters

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This work introduces a unique ionophore for the selective determination of Sr 2þ ions. The ionophore, salicylaldehyde thiosemicarbazone (ST), presented a high affinity toward the strontium cations. The demonstrated characteristics of the sensor included a linear dynamic range between 1.0 Â 10 À6 and 1.0 Â 10 À2 M with a near Nernstian slope of 29.4 AE 0.5 mV per decade, a detection limit of 4.8 Â 10 À7 M, and a very good selectivity for Sr 2þ over other cations in a wide pH range (2.8-10.4). The sensor possessed the advantages of short conditioning time, fast response time (<10 s), and, especially, good selectivity toward the transition and heavy metal ions as well as some mono, di, and trivalent cations. Concerning the electrode lifetime, no considerable potential divergence was noticed for at least 10 weeks. The developed sensor was successfully used as an indicator electrode in the Sr 2þ titration with EDTA from binary mixtures, and the Sr 2þ monitoring in mixtures of three and five different ions.

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