Photo‐Induced Chemiluminometric Determination of Acrolein in a Multicommutation Flow Assembly

Abstract

This paper deals with the determination of acrolein based on a strategy provided with a sensitive detection, the chemiluminescence; a "clean chemical" analyte treatment, the on-line UV-irradiation; and, a simple and quick automated system, the emergent multicommutation continuous-flow methodology. The pesticide solution is irradiated (stopped-flow) for 30 s; then, the resulting solution is introduced to the flow-cell after being alternated with segments of the stream formed by potassium permanganate in strong acid solution and ethanol segments. The calibration range, from 1 to 1 mg l 21 , resulted in a linear behavior over the range 5-100 mg l 21 and fitting the linear equation: I ¼ 75.69 Â 17.75; correlation coefficient 0.9997. The limit of detection was 0.1 mg l 21 and the sample throughput 52 h 21 . After testing the influence of a large series of potential interferents the method was applied to different types of samples.

Pesticides and Herbicides

“…Chemiluminescence Method. Climent et al (2007) Analytical figures of merit and the interference of foreign substances were also investigated.…”