2，4－二甲氧基苯基荧光酮光度法测定铍

Spectrophotometric Determination of Beryllium with 2,6,7-Trihydroxy-9-(2,4-dimethoxyphenyl)fluorone

２，４－二甲氧基苯基荧光酮光度法测定铍韩峭峰，杨问华，侯安新，陈晓明，陈伟中国地质大学化学系汉口４３００３０２，４－二甲氧基苯基荧光酮（ＤＭＰＦ）已用于分光光度法测定微量Ｃｏ￣［１］、Ａｌ￣［２］及化学发光法测定Ｃｏ￣［３］。本试验在ＣＴＭＡＢ存在下...

ervllium forms a purple 1:1 complex with DMPF in the presence of CTMAB in a pH8.0～9.0 H_3BO_3-KCl-Na_2CO_3 buffer.The maximum absorbance is at 542nm. The molar absorptivity is 9.85×10￣4L· mol￣-1·cm￣-1,Beer’s law is obeyed for BeO in the range of 0～0.38μg/ml. The method is simple,rapid and sensitive. The recommended procedure has beenapplied to the determination of beryllium in geological samples with satisfactory results.