TY - JOUR
T1 - A low-cost automated flow analyzer based on low temperature co-fired ceramic and LED photometer for ascorbic acid determination
AU - Pessoa-Neto, Osmundo D.
AU - Dos Santos, Vagner B.
AU - Vicentini, Fernando C.
AU - Suarez, Willian T.
AU - Alonso-Chamarro, Julián
AU - Fatibello-Filho, Orlando
AU - Faria, Ronaldo C.
PY - 2014/3/1
Y1 - 2014/3/1
N2 - An automated flow analyzer based on low temperature co-fired ceramic (LTCC), a solid-phase reactor (SPR) and a low-cost photometer was designed for ascorbic acid (AA) determination in pharmaceutical formulations. It consists of a peristaltic pump, three-way solenoid valves, SPR to chemically convert Cu(II) into Cu(I), and a LTCC device for mixing the liberated copper with bathocuproine and detection. The flow cell in the LTCC employed an ultrabright LED - photodiode photometer. The analyzer successfully determined AA in pharmaceutical formulations. The analytical curve from 8.5×10-6 to 7.0×10-4 M gave a detection limit of 7.0×10-7 M and a RSD of 2.1% for a 2.0×10-4 M AA solution (n = 10). A high sampling frequency of 102 h-1 and low reagent and sample consumption (150 μL) resulted. © Versita Sp. z o.o.
AB - An automated flow analyzer based on low temperature co-fired ceramic (LTCC), a solid-phase reactor (SPR) and a low-cost photometer was designed for ascorbic acid (AA) determination in pharmaceutical formulations. It consists of a peristaltic pump, three-way solenoid valves, SPR to chemically convert Cu(II) into Cu(I), and a LTCC device for mixing the liberated copper with bathocuproine and detection. The flow cell in the LTCC employed an ultrabright LED - photodiode photometer. The analyzer successfully determined AA in pharmaceutical formulations. The analytical curve from 8.5×10-6 to 7.0×10-4 M gave a detection limit of 7.0×10-7 M and a RSD of 2.1% for a 2.0×10-4 M AA solution (n = 10). A high sampling frequency of 102 h-1 and low reagent and sample consumption (150 μL) resulted. © Versita Sp. z o.o.
KW - Ascorbic acid determination
KW - Flow analysis
KW - LED photometer
KW - LTCC
KW - Multicommutation
U2 - 10.2478/s11532-013-0377-2
DO - 10.2478/s11532-013-0377-2
M3 - Article
SN - 1895-1066
VL - 12
SP - 341
EP - 347
JO - Central European Journal of Chemistry
JF - Central European Journal of Chemistry
IS - 3
ER -