Validation steps for traceability of linear calibrated chemical measurements

Authors: Brüggemann, L.¹; Wennrich, R.²

Source: Accreditation and Quality Assurance, Volume 9, Number 8, July 2004 , pp. 493-498(6)

Publisher: Springer

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Abstract:

Based on the new draft of the EURACHEM/CITAC Guide “Traceability in Chemical Measurement”, this publication describes how traceability can be achieved for chemical measurements using a linear calibration function. Traceability can be accomplished without larger expenditure, if the measurement is calibrated on the basis of appropriate reference standards and the linear regression employed is selected and validated statistically in a suitable form. The determination of nickel in aqua regia eluates of sediment samples, employed for an ICP-OES measurement, is used as a practical illustration of this approach.

Keywords: Traceability; Linear calibration; Method validation

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s00769-004-0824-z

Affiliations: 1: Department of Analytical Chemistry, UFZ Centre for Environmental Research Leipzig-Halle, Permoserstrasse 15, 04318, Leipzig, Germany, Email: lutz.brueggemann@ufz.de 2: Department of Analytical Chemistry, UFZ Centre for Environmental Research Leipzig-Halle, Permoserstrasse 15, 04318, Leipzig, Germany,

Publication date: 2004-07-01