【摘要】 合成了新型席夫碱试剂 3,5-二溴水杨醛缩甘氨酸 ( DBSAGL Y) ,建立该试剂荧光度法测定微量Zn( )的新体系 ,在 p H=7.0～ 8.0时 Zn( )与 DBSAGL Y形成 1∶ 1的络合物 ,络合物最大激发和发射波长分别为 λex=30 0 nm和 λem=4 68nm,荧光线性范围 0～ 12 0 μg/ L,检测限量 1.6μg/ L。本法用于粮食中锌的测定更多还原

【Abstract】 A new shciff’s base 3,5 dibromsalicyladehyde glycocoll(DBSAGLY) was synthezied and its characteristics were determined. The optimal conditions for the fluorescent complex formation of DBSAGLY with Zinc(Ⅱ) were established. The maxinum excitation and emission wavelength is 300 nm and 468 nm respectively at pH 7 0～8 0. The molar ratio of Zinc to DBSAGLY was determined to be 1∶1. The proposed method was used for the determination of Zinc in crops in the range of 0～120 μg/L. The detection limit of Zn(Ⅱ) is 1 6 μg/L.更多还原