Electrochemical determination of boric acid using the boric acid-tiron complexation system
Electrochemical determination of boric acid using the boric acid-tiron complexation system
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DOI：
10.1002/elan.200900562
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发表时间：
2010-06
期刊：
影响因子：
3
通讯作者：
T. Fujimori;H. Akimoto;Y. Tsuji;K. Takehara;K. Yoshimura
中科院分区：
文献类型：
--
作者：
T. Fujimori;H. Akimoto;Y. Tsuji;K. Takehara;K. Yoshimura
为了监测海水淡化厂生产的反渗透 (RO) 水中的硼浓度，开发了一种利用与 4,5-二羟基苯-1,3-二磺酸 (Tiron) 络合的伏安法测定电化学惰性硼量的方法。循环伏安测量显示硼酸-Tiron 1:1 复合物的氧化峰为 920 mV。该峰成功应用于使用差示脉冲伏安法测定 LOD 为 0.1 mg B dm−3 的 RO 水中的硼。研究发现 Tiron 及其硼络合物的氧化还原和酸解离行为取决于 pH 缓冲试剂的特性。
For monitoring the boron concentration in reverse osmosis (RO) water produced by desalination plants, a voltammetric determination method for the amount of electrochemically inactive boron has been developed by using the complexation with 4,5-dihydroxybenzene-1,3-disulfonic acid (Tiron). Cyclic voltammetric measurements showed the oxidation peak of boric acid–Tiron 1 : 1 complex at 920 mV. This peak was successfully applied to the determination of boron in RO water with the LOD of 0.1 mg B dm−3 by using differential pulse voltammetry. The redox and acid–dissociation behaviors of Tiron and its boron complex are found to depend on the properties of pH buffer reagent.