Issue 6, 2001
From the journal:

Analyst

Determination of fat in leather by the use of

Lisbeth Manganiello,†a   Agustin Marsal,b   Angel Ríosa  and  Miguel Valcárcel*a  

* Corresponding authors

a Division of Analytical Chemistry, Faculty of Sciences, University of Córdoba, Cordoba, Spain.
E-mail: qa1meobj@.uco.es

b Consejo Superior de Investigaciones Cientificas (CSIC), Instituto de Investigaciones Químicas y Ambientales de, Barcelona, Spain

Abstract

Leather samples were prepared and characterized as ‘in house’ matrix standards for the determination of fat. The Soxhlet standard method was used to establish the reference fat content in every standard sample. Sample homogeneity and stability were examined under specific storing conditions. The materials were subsequently used as matrix standards for the determination of fat in leather samples, using supercritical fluid extraction (SFE) with on-line piezoelectric detection. Real samples were weighed in the extraction SFE thimble, previously loaded with 1 g of diatomaceous earth. A temperature of 45 °C and a CO2 fluid density of 0.85 g ml−1 were used for extraction. The linear calibration range thus achieved was 0.001–0.040% m/m total fat (related to the weight of the leather) and the relative standard deviation ±3% (n = 11; P = 0.05). The results were compared with those obtained with the Soxhlet method and no significant differences were found.

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Article information

DOI
https://doi.org/10.1039/B009302P
Article type
Paper
Submitted
20 Nov 2000
Accepted
02 Apr 2001
First published
22 May 2001

Analyst, 2001,126, 938-942

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Determination of fat in leather by the use of supercritical fluid extraction combined with on-line piezoelectric detection

L. Manganiello, A. Marsal, A. Ríos and M. Valcárcel, Analyst, 2001, 126, 938 DOI: 10.1039/B009302P

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