干法灰化消解—硫氰酸汞分光光度法测定MDEA溶液中的氯离子  

THE APPLICATION OF DRY ASHING DIGESTION-MERCURIC THIOCYANATE SPECTROPHOTOMETRIC METHOD TO DETERMINE THE CHLORINE IN MDEA SOLUTION

作　　者：胡威盛 洪定波 Hu Weisheng;Hong Dingbo(CNOOC Fudao Co.,Ltd.,Dongfang572600)

机构地区：[1]海洋石油富岛有限公司分析化验中心,海南东方572600 [2]海洋石油富岛有限公司,海南东方572600

出　　处：《大氮肥》2022年第1期69-72,共4页Large Scale Nitrogenous Fertilizer Industry

摘　　要：采用马弗炉在600℃下将蒸干的MDEA溶液灼烧2 h,用(1+99)硝酸溶液浸提、过滤,再用硫氰酸汞分光光度法测定滤液中的氯离子。经试验该方法干扰少,准确度高,回收率在91.0%~100.1%,样品测定精密度(RSD)为5.7%。The MDEA solution is evaporated to dry on electric furnace,then processed in muffle furnace at 600℃for two hours,then leached by(1+99)nitrite acid solution and filtrated with filter.The chlorine in test filtrate is determined by mercury thiocyanate spectrophotometric method with little interference and high accuracy.The rate of recovery is 91.0%~100.1%.The RSD for sample determining is 5.7%。

关 键 词：MDEA 硫氰酸汞分光光度法 干法消化 醇胺溶液 

分 类 号：O657.3[理学—分析化学] TQ226.3[理学—化学]