A simple platform with moving drops for downscaling chemical analysis incorporating smartphone detection

• Main Authors: Sutasinee Apichai, Kajorngai Thajee, Wasin Wongwilai, Sunanta Wangkarn, Pathinan Paengnakorn, Chalermpong Saenjum, Kate Grudpan
• Format: Journal
• Published: 2019
• Subjects: Chemistry
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85064077929&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/65473
• Institution: Chiang Mai University

© 2019 Elsevier B.V. A simple cost-effective device for downscaling chemical analysis with microliter-scale dropwise handing and smartphone detection is proposed. The platform was made from easily available materials. Drops of constant volume of analyte and reagent were placed onto a channel then moved by gravity force to mix and react with each other. The color change due to reaction was monitored with a smartphone. Assays of iron, copper and phosphate employing the platform were demonstrated with 1,10-phenanthroline, bicinchoninic acid and molybdate reagents, respectively. Kinetic study was also demonstrated for this simple device.