用罗丹明B与水合肼反应生成的中间体与溴丙炔反应合成了荧光增强型pd2+检测用探针RPd5.与pd2+结合后,RPd5的吸收及荧光强度明显增强,其荧光强度增强约40倍,并使检测时间缩短至约16 min.探针RPd5对pd2+的响应灵敏,最低检出限为2.31×10-6 mol/L,可以在较宽pH值范围内特别是近中性pH值环境下有效检测pd2+.RPd5可以实现对Pd2+以比色及荧光2种途径的可视化识别,并可应用于土壤、池塘水等实际样品中痕量pd2+的检测.RPd5还可制成试纸用于纯净水中pd2+检测.
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