Simplified determination of complex stoichiometry for colorimetric metal indicators by inkjet printing
Simplified determination of complex stoichiometry for colorimetric metal indicators by inkjet printing
复制标题
通过喷墨打印简化测定比色金属指示剂的复杂化学计量
DOI：
10.1039/c7an01962a
复制
发表时间：
2018
期刊：
影响因子：
4.2
通讯作者：
Kento Kuwahara; Kentaro Yamada; Koji Suzuki; Daniel Citterio
中科院分区：
文献类型：
--
作者：
S. Honda;D. Yamamoto;T. Ohsawa;T. Gushi;K. Ito;and T. Suemasu;Kento Kuwahara; Kentaro Yamada; Koji Suzuki; Daniel Citterio
本文介绍了用办公室喷墨打印机结合数字色彩分析，用作图方法测定比色金属指示剂的络合化学计量比。与传统的基于溶液的分析方法不同，传统的基于溶液的分析涉及许多混合溶液的手动制备，基于喷墨的方法允许在纸张衬底上方便地自动混合各种比例的金属盐和指示剂溶液。喷墨沉积的液体体积和混合比例通过PC上简单的颜色值设置进行控制。为此，制定了定制打印颜色配置文件，以实现软件集CMYK(青色、洋红色、黄色和键版(黑色))颜色值与墨水沉积量之间的线性关系。基于喷墨的作业图分析与基于溶液的传统方法进行了验证，以确定五个已知的金属离子指示剂系统的结合化学计量比。对滤纸上打印的斑点进行简单的颜色扫描和颜色分析，可以对五种不同的化学计量比和比色响应模式提供准确的结果。这种使用定制打印颜色配置文件的喷墨打印方法允许快速、灵活和精确地沉积和混合试剂溶液，因此有望用于需要在衬底上控制试剂沉积的广泛应用目的。
This paper presents the determination of complex binding stoichiometry for colorimetric metal indicators according to the Job plot method by means of an office inkjet printer in combination with digital colour analysis. In contrast to the conventional solution-based analysis involving manual preparation of many mixed solutions, the elaborated inkjet-based approach allows convenient automated mixing of metal salt and indicator solutions in various ratios on a paper substrate. Inkjet-deposited liquid volumes and mixing ratios were controlled by simple colour value setting on a PC. For this purpose, a custom printing colour profile has been elaborated to achieve a linear relationship between the software set CMYK (Cyan, Magenta, Yellow and Key plate (Black)) colour values and the amount of deposited ink. The inkjet-based Job plot analysis was validated against the solution-based conventional approach for binding stoichiometry determination of five known metal ion–indicator systems. Simple colour scanning and colour analysis of printed spots on filter paper gave accurate results for five different stoichiometries and colorimetric response patterns. This inkjet printing approach using a customized printing colour profile allows rapid, flexible and precise deposition and mixing of reagent solutions, and thus, is expected to be useful for wide application purposes, which require the controlled deposition of reagents on a substrate.