H. Tavallali, Gohar Deilamy Rad, A. Parhami
Sep 1, 2012
Citations
0
Influential Citations
27
Citations
Journal
Dyes and Pigments
Abstract
Abstract Bromopyrogallol red, BPR, (2-(2,7-dibromo-4,5,6-trihydroxy-3-oxo-3H-xanthen-9-yl) benzenesulphonic acid, Scheme 1 ) as a new chromogenic anion receptor, can selectively and efficiently be applied for detection of AcO − over wide range of anions such as BzO − , F − , Cl − , Br − , OH − , I − , NO 3 − , HSO 4 − , CN − and CO 3 2 − in mixed DMSO/H 2 O media. Increasing the amount of H 2 O up to 50% (v/v) caused a dramatic development in selectivity of AcO − . The developed BPR enabled the determination of acetate in the linear concentration range of 19.0–42.0 μM (1.12–24.8 μg mL −1 ) with the detection limit of 2.5 μM (0.147 μg mL −1 ) and the relative standard deviation (RSD, C = 19.4 μM, n = 5) of less than 1%. This enables the design and development of reusable optical receptors for monitoring trace amounts of acetate ion in vinegar samples and the values agreed with those mentioned by the manufacturers.