【摘要】 基于表面增强拉曼光谱(SERS)技术,发展了一种纺织品中染料定性检测的快速方法.以国家明确禁止使用的致癌染料碱性红9(Basic red 9)和分散黄23(Disperse yellow 23)为模型分子,利用一步法快速制备的银纳米粒子为SERS基底并进行优化.通过在纺织品表面直接滴加银纳米粒子的方法实现了纺织品中染料的快速SERS鉴别.研究结果表明,该方法不需要复杂的样品前处理过程,能够直接实现纺织品中染料的快速定性,且灵敏度高,对纺织品上两种禁用染料碱性红9和分散黄23的检测限分别为0.16和0.24 mg/kg,超出了国家标准的要求,有望成为一种实用的纺织品安全性评估技术.更多还原

【Abstract】 Dye is one of the most important compounds. The textile industry consumes more than half of its total production each year,so dyes have a critical impact on the safety of textiles. The improvement of lifestyle has prompted people to pursue more safety of clothing. In addition,the frequent safety accidents of textile dyes have made relevant institutions focus on the development of more effective detection technology. Most of the banned dyes have carcinogenicity,teratogenicity,sensitization and other hazards to the human body. Moreover,many harmful dyes can exist in light,solvents and most chemical substances for a long-time,and it has difficult to degrade,causing harm to the environments. The development of rapid and sensitive technique is highly desired for the detection of banned dyes. Herein,based on surface-enhanced Raman spectroscopy(SERS),a rapid qualitative method for dyes in textiles was established. SERS technology exhibits high detection sensitivity and fast detection speed for more accurate qualitative detection of dyes. Two kinds of dyes(basic red 9 and disperse yellow 23),which are prohibited in the national standards,were employed as the model probe molecules. Silver nanoparticles were fabricated by one-step method,and the substrate optimization experiment was carried out. Combined with SERS technology,the rapid identification of dyes in textiles was achieved. It was revealed that the limit of detection(LOD)of these two dyes in textiles was about 0.16 and 0.24 mg/kg for basic red 9 and disperse yellow 23,respectively. The LOD was one order of magnitude higher than the national standard. It demonstrated that the SERS based approach could be developed as promising technique for direct and rapid evaluation of textile safety.更多还原