Department of Chemistry, Payame Noor University, 19395-4697 Tehran, Islamic Republic of Iran.
J Photochem Photobiol B. 2012 Oct 3;115:51-7. doi: 10.1016/j.jphotobiol.2012.06.010. Epub 2012 Jul 11.
An efficient colorimetric chemosensor with bromo pyrogallol red (BPR) as an easily available dye demonstrated a high chromogenic selectivity for Fe(3+) over other cations with detection limit of 5.1 μmol L(-1). The complex of Fe(3+) with BPR displayed ability to detect of up to 4.4 and 25.6 μmol L(-1) for acetate (AcO(-)) and benzoate ions (BzO(-)) in DMSO/H(2)O (9:1 v/v) media respectively over a large number of other anions. Both processes proceeded with distinct visual color changes in DMSO/H(2)O (9:1 v/v). The linear dynamic ranges for the determinations of Fe(3+), AcO(-) and BzO(-) were 2.5-24.0, 2.5-20.5 and 28.0-42.0 μg mL(-1) respectively. This chemosensor was successfully applied for the determination of Fe(3+) and of carboxylate anions in environmental samples. This is the first article of a chemosensor capable of detecting both Fe(3+) and anions (AcO(-) and BzO(-)) using single detection method in a single cell.
一种以溴邻苯三酚红（BPR）为显色剂的高效比色化学传感器，对 Fe(3+)具有高显色选择性，检测限低至 5.1 μmol L(-1)。Fe(3+)与 BPR 的络合物在 DMSO/H(2)O（9:1 v/v）介质中对乙酸根（AcO(-)）和苯甲酸根（BzO(-)）的检测限分别高达 4.4 和 25.6 μmol L(-1)，而对大量其他阴离子的检测则具有较高的选择性。这两个过程在 DMSO/H(2)O（9:1 v/v）中均呈现出明显的可见颜色变化。Fe(3+)、AcO(-)和 BzO(-)的测定线性动态范围分别为 2.5-24.0、2.5-20.5 和 28.0-42.0 μg mL(-1)。该化学传感器成功应用于环境样品中 Fe(3+)和羧酸盐阴离子的测定。这是第一篇报道使用单一检测方法在单个细胞中同时检测 Fe(3+)和阴离子（AcO(-)和 BzO(-)）的化学传感器的文章。
