Nitrile, Latex, Neoprene and Vinyl Gloves: A Primary Source of Contamination for Trace Element and Zn Isotopic Analyses in Geological and Biological Samples

Abstract : Exogenic contamination is of primary concern for geochemical and biological clean laboratories working with sample sizes at the nanogram or even subpicogram level. Here, we determined sixty trace elements in fifteen different types of gloves from major suppliers world-wide to evaluate whether gloves could be potential sources of contamination for routine trace element and isotope measurements. We found that all gloves contain some trace elements that can be easily mobilised in significant amounts. In weak acid at room temperature, the tested gloves released up to 17 mg of Zn, more than 1 l g of Mg, Ti, Mn, Fe, Rb, Sr, Zr, Sn, Hf and Pb and between 100 and 1000 ng of Li, Sc, V, Cr, Ni, Cu, Ga, As, Se, Y, Ag, Ba, La, Ce, Nd, Tl and Th. Vinyl gloves released lower quantities of biologically and geologically important elements, with the exception of In and Sn. Isotopic analyses indicate that all gloves share roughly the same Zn isotopic composition (average d 66 Zn =+ 0.10 ± 0.32 ‰ (2 s )). A single contact between glove and labware releases an average of ~ 6 ng of Zn and hence can significantly shift d 66 Zn above the precision level when the amount of Zn determined is below 500 ng
Type de document :
Article dans une revue
Geostandards and Geoanalytical Research, Wiley, 2017, 41 (3), pp.367 - 380. 〈10.1111/ggr.12161〉
Liste complète des métadonnées

https://hal-clermont-univ.archives-ouvertes.fr/hal-01645406
Contributeur : Sylvaine Jouhannel <>
Soumis le : jeudi 23 novembre 2017 - 08:54:03
Dernière modification le : jeudi 11 octobre 2018 - 01:16:06

Lien texte intégral

Identifiants

Citation

Marion Garçon, Lucie Sauzeat, Richard W. Carlson, Steven B. Shirey, Mélanie Simon, et al.. Nitrile, Latex, Neoprene and Vinyl Gloves: A Primary Source of Contamination for Trace Element and Zn Isotopic Analyses in Geological and Biological Samples. Geostandards and Geoanalytical Research, Wiley, 2017, 41 (3), pp.367 - 380. 〈10.1111/ggr.12161〉. 〈hal-01645406〉

Partager

Métriques

Consultations de la notice

90