Flow-injection Fourier transform infrared spectrometric analysis
1992; Elsevier BV; Volume: 261; Issue: 1-2 Linguagem: Inglês
10.1016/0003-2670(92)80175-7
ISSN1873-4324
AutoresMiguel de la Guárdia, Salvador Garrigues, Máximo Gallignani, J.L. Burguera, M. Burguera,
Tópico(s)Advanced Chemical Sensor Technologies
ResumoA method has been developed for obtaining and storing the complete Fourier transform spectrum, of a sample in a flowing stream in only 19 s. A resolution of 4 cm−1 is recommended. The determination of o-xylene in xylol was employed as a test system, using hexane as a carrier and diluent in all the experiments. A classical liquid flow cell and a demountable flow-through cell were compared. The best limit of detection obtained was 0.01% (v/v). The effects of flow-rate and injection volume were studied for the two cells used. The relative standard deviation (0.4% o-xylene, n = 5) was ca. 1%
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