| Titre : |
HPLC versus spectrophotometry for the quantitation of trace amounts of formaldehyde in leathers |
| Type de document : |
texte imprimé |
| Auteurs : |
Nicolas Blanc, Auteur ; Alain Berthod, Auteur ; Jean-Claude Cannot, Auteur ; Nathalie Humbert, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
p. 1-8 |
| Note générale : |
Bibliogr. |
| Langues : |
Français (fre) |
| Catégories : |
Cuirs et peaux
Formaldéhyde
Spectrophotométrie
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Several countries recently tightened their regulation concerning the formaldehyde content in leather samples. The assay is commonly done following the instructions of the standard CEN ISO TS 17226-2003. The norm proposes two methods applied after aqueous micellar extraction of the shredded leather sample: a colorimetric method and a chromatographic method. 110 leather samples were assayed for formaldehyde content over a two year period. The two recommended methods were used in parallel. The results are compared showing a high coherence in trend. The differences in absolute values can be as high as 300% in the high (300 mg/kg) as well as in the low (3 mg/kg) concentration levels. The chromatographic method working with a diode array detector (DAD) was found three to four times more sensitive than the spectrophotometric method reaching a limit of quantification (LOQ) of 2.5 mg/kg. The chromatographic limit of detection (LOD) was found to be 0.5 mg/kg. 19 samples were assayed using a third method: liquid chromatography with mass spectrometry detection (MS). The LOD and LOQ values were lowered using a tandem quadrupole MS that has also a much better selectivity working in the secondary ion MS/MS mode. Such an expensive detector may not be justified at the present for formaldehyde evaluation. A fluorimetric detector is recommended. |
| En ligne : |
https://drive.google.com/file/d/1lfO9_PNW3hU8K8sIpuHfSCUN21GAbrpT/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=3249 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 1 (01/2009) . - p. 1-8
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HPLC versus spectrophotometry for the quantitation of trace amounts of formaldehyde in leathers in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 1 (01/2009)
