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Stripping voltammetry using sequential standard addition calibration with the analytes themselves acting as internal standards.

Brown, R J C; Roberts, M R*; Brett, D J L* (2009) Stripping voltammetry using sequential standard addition calibration with the analytes themselves acting as internal standards. Anal. Chim. Acta, 635 (1). pp. 1-5.

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Abstract

A novel two-step standard addition calibration procedure for stripping voltammetry, whereby the analytes under investigation themselves act as internal standards for each other, is described. In this way, the benefits of an internal standard to improve precision are obtained without the requirement of actually adding internal standard solutions. Only the standard solutions used to perform the quantification are required. Initially the system has been investigated to determine the optimum internal standardisation regime, and then the methodology has been tested against the traditional standard addition method with no internal standardisation, on synthetic and real ambient air sample digests, for the measurement of Zn, Cd, Pb and Cu. The new procedure improves the precision and accuracy as compared to traditional standard addition without internal standardisation.

Item Type: Article
Subjects: Analytical Science
Analytical Science > Trace Analysis and Electrochemistry
Last Modified: 23 Jul 2018 13:34
URI: http://eprintspublications.npl.co.uk/id/eprint/4319

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