流动注射分光光度法测定有机溶剂中的微量溶解氧  

Determination of dissolved oxygen in organic solvent by flow injection spectrophotometry

作　　者：何丽君[1] 刘霞[1] 蒋生祥[1] 柳春辉[1] 

机构地区：[1]中国科学院兰州化学物理研究所,兰州730000

出　　处：《化学试剂》2002年第2期86-87,98,共3页Chemical Reagents

摘　　要：以含亚甲基蓝、葡萄糖的碱性醇溶液作为载流 ,采用封闭式进样 ,建立了一种适于测定有机溶剂 (醇、烷烃 )中微量溶解氧的流动注射 -分光光度法。其中对异丙醇的测定范围为 0～ 1.2 8× 10 - 6 ,检测限为 0 .0 0 6× 10 - 6 ;对正庚烷的测定范围为 0～1.96× 10 - 6 ,检测限为 0 .0 1×A method for the determination of dissolved oxygen (DO) in organic solvent(such as alcohol,alkane)was developed by flow injection spectrophotometry.Alkaline glucose solution of methylene blue was used for carrier and closed injection was adopted.The linear ranges of DO for isopropyl alcohol and n heptane are 0～1.28 and 0～ 1.96×10 -6 , respectively.The corresponding detection limits,in turn,are 0.006 and 0.01 ×10 -6 .

关 键 词：流动注射分析 分光光度法 测定 有机溶剂 微量分析 亚甲基蓝 葡萄糖 溶解氧 

分 类 号：X832.02[环境科学与工程—环境工程] O657.32[理学—分析化学]