Issue 3, 2013

Hydride generation – in-atomizer collection of Pb in quartz tube atomizers for atomic absorption spectrometry – a 212Pb radiotracer study

Abstract

Lead preconcentration on the quartz surface after plumbane generation was extensively studied in the separate quartz trap or in the compact trap-and-atomizer device by means of a laboratory prepared 212Pb radioactive indicator. Plumbane generation efficiency of 95% was found. A large surface area is required for sufficient analyte trapping as found by autoradiography. The lead trapping efficiency in the separate trap is around 85% at 300 °C whereas 100% trapping is reached in the trap-and-atomizer device at the same temperature due to its greater inner surface. Volatilization of the trapped lead species at 800 °C is efficient for both the separate quartz trap and the trap-and-atomizer device. The non-volatilized lead fraction was below 5% in the trap-and-atomizer device at 800 °C. The non-volatilized lead fraction increases substantially in the presence of Bi. This was proved to be the mechanism of the serious Bi interference. Although 1–10 ng of analyte is typically preconcentrated in ultratrace analysis the quartz trap is capable of efficient trapping and subsequent volatilization of up to 200 ng Pb.

Graphical abstract: Hydride generation – in-atomizer collection of Pb in quartz tube atomizers for atomic absorption spectrometry – a 212Pb radiotracer study

Article information

Article type
Paper
Submitted
19 Sep 2012
Accepted
11 Dec 2012
First published
12 Dec 2012

J. Anal. At. Spectrom., 2013,28, 344-353

Hydride generation – in-atomizer collection of Pb in quartz tube atomizers for atomic absorption spectrometry – a 212Pb radiotracer study

J. Kratzer, S. Musil, M. Vobecký and J. Dědina, J. Anal. At. Spectrom., 2013, 28, 344 DOI: 10.1039/C2JA30263B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements