کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1171020 | 960700 | 2007 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A novel flow-through fluorescence optosensor for the determination of thiabendazole A novel flow-through fluorescence optosensor for the determination of thiabendazole](/preview/png/1171020.png)
This paper presents the development of a new flow-injection system combined with solid-surface fluorescence detection for the determination of the widely used fungicide thiabendazole. Nylon powder was probed as a novel solid support for building the optosensor. The method is based on the on-line immobilization of thiabendazole onto nylon in a continuous flow system, followed by the measurement of its native fluorescence. Aqueous samples are directly injected in a water carrier, resulting in a very simple and economical method. The analytical figures of merit obtained using 1500 μL of sample and 75% methanol (v/v) as eluting solution were: linear calibration range from 8 to 120 ng mL−1 (the lowest value corresponds to the quantitation limit), relative standard deviation, 0.9% (n = 5) at a level of 64 ng mL−1, limit of detection calculated according to 1995 IUPAC recommendations is to 2.8 ng mL−1, and sampling rate of 14 samples h−1. The potential interference from other agrochemicals, metal ions and common anions, and the viability of determining thiabendazole in real water samples were also evaluated.
Journal: Analytica Chimica Acta - Volume 601, Issue 2, 10 October 2007, Pages 196–203