Orientador(es)
Resumo(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.
Descrição
Palavras-chave
Codfish desalting Sequential injection Analysis Dialysis Turbidimetric chloride determination
Contexto Educativo
Citação
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
Editora
Springer