Choodum Aree, Jirapattanasophon Vanida, Boonkanon Chanita, Taweekarn Tarawee, Wongniramaikul Worawit
Integrated Science and Technology Research Center, Faculty of Technology and Environment, Prince of Songkla University, Phuket Campus, Kathu, Phuket, 83120, Thailand.
Research Program: The Development of Management System for Reduction and Control of Water Contamination and Distribution in Songkhla Lake Basin and the Western Coastline of the South of Thailand, Center of Excellence on Hazardous Substance Management (HSM), Bangkok, 10330, Thailand.
Anal Sci. 2020 May 10;36(5):577-581. doi: 10.2116/analsci.19SBP09. Epub 2020 Mar 20.
This work presents a novel, simple, rapid, and cost effective method for semi-quantitative analysis of arsenic(III) in water sample. The method was based on the digital image colorimetry (DIC) of difluoroboron-curcumin doped starch film (BF-cur-film) and arsenic ion in water. A red BF-cur-film (9.4 μm) was fabricated by entrapped difluoroboron-curcumin (BF-curcumin, particle size of 60 - 113 nm) in tapioca starch film. When the standard solution of arsenic (1 mL) was added into small plastic tube containing BF-cur-film on its inner lid, blue solution (λ at 610 nm) was observed instead of orange color in blank solution (λ at 495 nm). When BF-cur-film was used in conjunction with DIC, a wide linear range of 0 - 10 mg L with good linearity (R > 0.99) was obtained from green channel with low detection limit of 0.04 mg L. Moreover, good precision (0.9 - 1.2%RSD, n = 4 days) and accuracy (0.03% relative error) were also achieved.
这项工作提出了一种新颖、简单、快速且经济高效的方法，用于对水样中的砷（III）进行半定量分析。该方法基于二氟硼-姜黄素掺杂淀粉膜（BF-姜黄素膜）与水中砷离子的数字图像比色法（DIC）。通过将二氟硼-姜黄素（BF-姜黄素，粒径为60 - 113 nm）包埋在木薯淀粉膜中制备了红色BF-姜黄素膜（9.4μm）。当将砷标准溶液（1 mL）加入到内盖上装有BF-姜黄素膜的小塑料管中时，观察到蓝色溶液（610 nm处的λ），而空白溶液中为橙色（495 nm处的λ）。当BF-姜黄素膜与DIC结合使用时，从绿色通道获得了0 - 10 mg/L的宽线性范围，线性良好（R > 0.99），检测限低至0.04 mg/L。此外，还实现了良好的精密度（0.9 - 1.2%RSD，n = 4天）和准确度（0.03%相对误差）。
