Kanna Miki, Somnam Sarawut, Wongwilai Wasin, Grudpan Kate
Department of Chemistry, Faculty of Science, Chiang Mai University.
Center of Excellence for Innovation in Analytical Science and Technology, Chiang Mai University.
Anal Sci. 2019 Mar 10;35(3):347-350. doi: 10.2116/analsci.18N019. Epub 2018 Oct 19.
We propose the creation of reusable indicator-sorbed-solids, using anion-exchange resins or kaolin as supports, with the aim to reduce chemical use towards green analytical chemistry. Indicators (phenolphthalein, thymol blue and butterfly pea flower extract as a natural indicator) sorbed on a solid support, were employed in acid-base titration, in both homogenous aqueous and heterogenous aqueous organic phases. Applications of the developed techniques to some real samples, such as vinegar, colored fruit juice and vegetable oil, have been demonstrated.
我们提议使用阴离子交换树脂或高岭土作为载体来制备可重复使用的负载指示剂固体，旨在减少化学试剂的使用，以实现绿色分析化学。负载在固体载体上的指示剂（酚酞、百里酚蓝以及作为天然指示剂的蝶豆花提取物）被用于酸碱滴定，包括均相水相和非均相水-有机相中。已证明所开发技术在一些实际样品中的应用，如醋、有色果汁和植物油。
