کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1167114 | 960528 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Downscaling a multicommuted flow injection analysis system for the photometric determination of iodate in table salt Downscaling a multicommuted flow injection analysis system for the photometric determination of iodate in table salt](/preview/png/1167114.png)
In this work a downscaled multicommuted flow injection analysis setup for photometric determination is described. The setup consists of a flow system module and a LED based photometer, with a total internal volume of about 170 μL. The system was tested by developing an analytical procedure for the photometric determination of iodate in table salt using N,N-diethyl-henylenediamine (DPD) as the chromogenic reagent. Accuracy was accessed by applying the paired t-test between results obtained using the proposed procedure and a reference method, and no significant difference at the 95% confidence level was observed. Other profitable features, such as a low reagent consumption of 7.3 μg DPD per determination; a linear response ranging from 0.1 up to 3.0 m IO3−, a relative standard deviation of 0.9% (n = 11) for samples containing 0.5 m IO3−, a detection limit of 17 μg L−1 IO3−, a sampling throughput of 117 determination per hour, and a waste generation 600 μL per determination, were also achieved.
Journal: Analytica Chimica Acta - Volume 668, Issue 1, 23 May 2010, Pages 3–7