Rapid Determination of Formaldehyde in Food by Flow Injection-spectrometric Micro-sensor

Abstract

Abstract: A analytical system of continuous and automatic spectrometer was formed in conjunction of flow injection setup with spectrometric micro-sensor. A new rapid spectrometric method was developed for determination of formaldehyde in food with presented instrument, which was based on the reactive system of formaldehyde-phloroglucinol. The reaction condition and analytical parameters of flow injection were optimized. The linear range of determination of formaldehyde was 1.00～20.0 μg/ml and the detection limit was 0.10 μg/ml. This method was applied to determination of formaldehyde in food samples. The relative standard deviations of results were less than 8.6% and the spiked recovery was between 90.6% and 107%. The sampling frequency was 90 per hour.

Key words: , formaldehyde； flow injection； spectrometric micro-sensor；

LUAN Chong-Lin, DAI Jian-Guo. Rapid Determination of Formaldehyde in Food by Flow Injection-spectrometric Micro-sensor[J]. FOOD SCIENCE, 2007, 28(7): 450-452.

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Rapid Determination of Formaldehyde in Food by Flow Injection-spectrometric Micro-sensor

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