Cotton based colorimetric sensing offers great potential for the detection of desired analytes due to their easy naked-eye sensing, ease in fabrication, cost effectiveness, rapid recognition, high sensitivity and selectivity. Poly (2-(dimethylamino ethyl) methacrylate) (pDMAEMA) and sodium nitroprusside (SNP) were deposited alternatively on a treated cotton fabric for non invasive calorimetric sensing of ketones. Physical and chemical characterizations such as FESEM, EDS, XRD, UV–vis, FTIR and XPS of the treated cotton based sensor were carried out. Standard colour chart of the targeted ketones is prepared by dissolving appropriate amount of them with distilled water to get down to the final concentration as 80 mM and 10 µL of each solution of analyte was dropped on the surface of treated cotton fabric. The fabricated sensor is also tested for its practicability by analyzing the targeted ketones in human urine and the results obtained were compared with the standard colour chart. The results shows consistency in colours thereby making it a quick, efficient, eco-friendly and reliable monitoring tool to detect various ketones.

基于棉花的比色传感为检测所需分析物提供了巨大的潜力，因为它们易于肉眼感知、易于制造、成本效益高、识别速度快、灵敏度和选择性高。聚（2-（二甲氨基乙基）甲基丙烯酸酯）（pDMAEMA）和硝普钠（SNP）交替沉积在处理过的棉织物上，用于酮的非侵入性量热传感。对处理后的棉基传感器进行了物理和化学表征，例如 FESEM、EDS、XRD、UV-vis、FTIR 和 XPS。目标酮的标准比色图是通过用蒸馏水溶解适量的酮来制备最终浓度为 80 mM 和 10 µL 的每种分析物溶液滴在处理过的棉织物表面上。还通过分析人尿中的目标酮来测试制造的传感器的实用性，并将获得的结果与标准比色图进行比较。结果显示颜色的一致性，从而使其成为检测各种酮的快速、高效、环保和可靠的监测工具。