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.
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