摘要
设计并合成了1-丁基-2-苯基硫脲吡啶溴化盐([C4ptpyr]Br)新型的水溶性Hg2+荧光探针,将其用于环境水样中Hg2+的检测。结果表明,[C4ptpyr]Br对Hg2+识别专一性好,共存离子及pH值对测定影响小。在pH=7的BR缓冲溶液中,检测线性范围为0.02～4 mg/L(r2=0.999 1),检出限为0.011 mg/L,回收率为95.2%～102.2%,RSD<5%。方法具有灵敏度和准确度高、分析速度快、操作简便等特点,可满足各类水中微量汞的测定要求。
A novel type of fluorescent ionic liquid,1-butyl-2-phenyl thiourea pyridinium bromide,was synthesized and a new method for determining Hg2＋ in aqueous medium was developed.The results show that the method has an excellent selectivity,good linear relationship（r2=0.999 1）,recovery 95.2%~102.2%,and low detection limit（0.011 mg/L） in the mass concentration range of 0.02~4 mg/L in BR buffer solution at pH=7.The method is successfully used for Hg2＋ determination in natural water.
出处
《应用化学》
CAS
CSCD
北大核心
2011年第12期1436-1440,共5页
Chinese Journal of Applied Chemistry
基金
浙江省自然科学基金资助项目(Y4080252)
关键词
荧光光谱法
荧光离子液体
荧光探针
汞离子(Ⅱ)
fluorescent spectrometry
fluorescent ionic liquid
fluorescent probe
mercury ion（Ⅱ）
