Versatile automatic stopped-flow system for routine analysis
1987; Elsevier BV; Volume: 199; Linguagem: Inglês
10.1016/s0003-2670(00)82794-4
ISSN1873-4324
AutoresA. Loriguillo, M. Silva, D. Pérez‐Bendito,
Tópico(s)Electrochemical Analysis and Applications
ResumoA versatile, automatic stopped-flow system featuring a mixing module and real-time data collection and treatment is presented. The mixing module is compatible with a number of spectrophotometers and spectrofluorimeters. The fast reaction between iron(III) and thiocyanate is used to evaluate the performance of the system and to develop a routine procedure for the determination of iron in wines, with a reaction time of 3 s. The calibration is linear over the range 1–30 μg ml−1, with a r.s.d. of 0.9% (n = 11) for 10 μg Fe ml−1 and a high sample throughput (120 h−1) is achieved.
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