摘要
合成了新试剂二安替比林－（2－甲氧基）－苯基甲烷（DAoMM）；研究了在Mn（Ⅱ）存在下，DAoMM与Cr（Ⅵ）生成橙黄色化合物。该化合物最大吸收位于480nm；表观摩尔吸收系数为ε=1．58×105L·mol－1·cm－1和ε2=9．85×104L·mol－1·cm－1化合物至少稳定20h。服从比尔定律范围0～1．6×102μg／LCr（Ⅵ）和2×102～8×102μg／LCr（Ⅵ）。用于含铬废水和电镀废液中铬的测定，结果满意。
Diantipyryl-(2-methoxy)-phenylme (DAoMM) was synthesized. A highly sensitive spectrophotometric method has been developed for the determination of chromium (Ⅵ) with DAoMM in the presence of Mn(Ⅱ ). Cr(Ⅵ) reacts with DAoMM to form an orange-yellow product in phosphoric acid medium. With the molar absorptivity of 1. 58 × 105and 9. 85× 104 L· mol-1·cm-1 at 480 nm. Beer's law is obeyed in the ragne of 0~1. 6×102and 2× 102~8 × 102μg/L for Cr(Ⅵ ). The method has been applied to the determination of chromium(Ⅵ ) in waste solution and electroplating waste solution with satisfactory results.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
1996年第2期195-197,共3页
Chinese Journal of Analytical Chemistry
关键词
铬
分光光度法
废水
电镀废液
DAOMM
Diantipyryl-(2-methoxy)-phenylmethane, chromium (Ⅵ), spectrophotometry
