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Czasopismo
2014 | 12 | 3 | 341-347
Tytuł artykułu

A low-cost automated flow analyzer based on low temperature co-fired ceramic and LED photometer for ascorbic acid determination

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
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.
Wydawca

Czasopismo
Rocznik
Tom
12
Numer
3
Strony
341-347
Opis fizyczny
Daty
wydano
2014-03-01
online
2013-12-21
Twórcy
  • Federal University of São Carlos
  • Federal University of São Carlos
  • Federal University of São Carlos
  • Federal University of Viçosa
  • Autonomous University of Barcelona
  • Federal University of São Carlos
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-013-0377-2
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