Selcuk University, Science Faculty, Department of Chemistry, Konya, 42031, Turkey.
Giresun University, Faculty of Engineering, Department of Environmental Engineering, Giresun, 28200, Turkey.
Talanta. 2020 Jan 15;207:120278. doi: 10.1016/j.talanta.2019.120278. Epub 2019 Aug 17.
Cyanide is potentially hazardous and quickly acting chemical used in many fields of industry. Therefore, detection of cyanide is of main health concern due to its serious impacts on living organisms. In this context, we have developed rapid, low-cost and on-site sensory two molecules for the colorimetric and fluorogenic sensing of cyanide ion in aqueous samples and food samples. The prepared probes undergo distinct visual color change and exhibits selective fluorogenic turn-on or turn-off response towards cyanide. Competing anions have little or negligible effect on the detection of cyanide. The limit of detection for cyanide ion was calculated as low as 0.45 μM. Free receptors could be successfully regenerated by treating them with Ag ion. Moreover, a new visual colorimetric strip based on paper was fabricated with the pale yellow-to-pink color change signal. The fabricated test strips also demonstrated excellent selectivity towards cyanide ion without interfering possible fluoride and acetate ions. The smartphone-based technique which could directly read out the color value using a smartphone revealed an excellent potential for the cyanide detection without additional device.
氰化物是一种潜在危险且作用迅速的化学物质，广泛应用于许多工业领域。因此，由于其对生物体的严重影响，对氰化物的检测成为主要的健康关注点。在这种情况下，我们已经开发出了两种快速、低成本、现场感应的分子，用于在水溶液样品和食品样品中对氰化物离子进行比色和荧光传感。制备的探针经历了明显的视觉颜色变化，并对氰化物表现出选择性的荧光开启或关闭响应。竞争阴离子对氰化物的检测几乎没有影响。氰化物离子的检测限计算低至 0.45μM。通过用银离子处理，可以成功地再生游离受体。此外，还使用基于纸张的新的可视比色条带，通过从浅黄色到粉红色的颜色变化信号进行制造。所制造的测试条带也表现出对氰化物离子的优异选择性，而不会干扰可能的氟化物和乙酸盐离子。基于智能手机的技术可以使用智能手机直接读取颜色值，无需额外设备，显示出对氰化物检测的巨大潜力。
