Advisor(s)
Abstract(s)
Salt-cured codfish represents an ancient process
of preservation but requires the rehydration of the codfish
with the correspondent salt removal. This work describes
the development of a sequential injection system for the online
turbidimetric determination of chloride during a
simulated desalting process. The samples are directly
aspirated to the manifold with no need for previous offline
treatments; this was possible due to the use on an inline
dialysis process; a quantification range from 50.0 mg/L
to 20.0 g/L was established using the same manifold
configuration. For monitoring the entire process, involving
several chloride determinations (ca. 10), less than 3 mL of
the desalting water was needed. Furthermore, the overall
reagent consumption was quite low: 0.211 mg of AgNO3,
30.6 mg of HNO3, and 31.1 μg of PVA per determination.
The accuracy of the system was evaluated by comparison
with a potentiometric reference method. The determination
rate was 28 and 31 h−1 according to the chloride
concentration range. Several simulated desalting processes,
under different conditions, were effectively monitored with
the developed method.
Description
Keywords
Codfish desalting Sequential injection Analysis Dialysis Turbidimetric chloride determination
Citation
SANTOS, Inês C. ...[et al.] - Development of a Turbidimetric Sequential Injection System to Monitor the Codfish Desalting Process. Food Analytical Methods. ISSN 1936-976X. Vol. 5, n.º 2 (2012), p. 287–295
Publisher
Springer