摘要
本文研究了水中低浓度银离子的离子浮选条件。Ag^+与邻菲罗啉(O—phen)形成络阴离子后,阴离子表面活性剂DBS将它浓缩于泡沫中。消耗液经蒸发,点涂于滤纸上进行X—线荧光光度测定。试样溶液用量为500ml时,可测定最低浓度为10ppb。
Silver ion in the sample of 500ml was reacted with o-phenanthroline to give chelate ion at pH 4.2. The chelate was then floated using sodium dodecylbenzene sulfonate as a counter ionic surfactant. Nitrogen bubbling gas flow rate was 135wlmin-1,and separation took 2 min. The foam collected was defoamed with 1-propanol and evaporated to about 1 ml. The residual solution was dropped to a piece of filter paper and determined by X-ray fluorescence spectrometry. The determinable concentration range was 10-150 ppb.
出处
《黄金》
CAS
北大核心
1989年第5期49-52,共4页
Gold
关键词
水
银
荧光光度法
泡沫浮选
foam floatio
fluorescencl analysis
silver
