Are analytical standards and reagents really reliable ? - Archive ouverte HAL Access content directly
Journal Articles Accreditation and Quality Assurance Year : 2016

Are analytical standards and reagents really reliable ?

(1) , (1) , (1) , (2) , (2) , (3, 1) , (1) , (1)
1
2
3

Abstract

Quality assurance is one of the major challenges in analytical chemistry whatever the scope of application. The quality of analytical standards is never questioned, however sometimes odd results are obtained and all the other potential sources of discrepancies are eliminated. So, we investigated the quality of three analytical standards and reagents implemented for radiological and chemical characterizations of nuclear waste. In particular, this work examined the purity of a source of tritiated-labelled dodecane, the trueness and the purity of a DTPA reagent and the trueness of a multi-anions standard used for an intercomparison exercise. It was shown that the source of tritiated-labelled dodecane contains 60 per cent of tritiated-labelled impurities. The trueness of the DTPA concentration was questioned due to the presence of impurities in the solution. It was proven that the long-term stability of the multi-anions standard was not guaranteed for nitrite. The results clearly demonstrated that, although in opposition to intuition, cautiousness has to be taken towards the quality of the analytical standards.
Fichier principal
Vignette du fichier
201500001962.pdf (389.01 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

cea-02384424 , version 1 (28-11-2019)

Identifiers

Cite

Céline Gautier, Perrine Wund, Elodie Laporte, Jérôme Vial, Didier Thiebaut, et al.. Are analytical standards and reagents really reliable ?. Accreditation and Quality Assurance, 2016, 21 (1), pp.41-46. ⟨10.1007/s00769-015-1178-4⟩. ⟨cea-02384424⟩

Collections

CEA DEN DEN-MARCO
33 View
75 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More