高效离子交换色谱法分离和测定氯溴碘  

HPIEC SEPARATION AND DETERMINATION OF CHLORIDE BROMIDE AND IODIDE

作　　者：刘满仓[1] 范必威 胡之德[1] Liu Mancang;Fan Biwei;Hu Zhide(Department of Chemistry,Lanzhou University,Lanzhou)

机构地区：[1]兰州大学化学系

出　　处：《高等学校化学学报》1982年第1期48-54,共7页Chemical Journal of Chinese Universities

摘　　要：用国产高效离子交换色谱仪及国产阴离子交换树脂研究了分离Cl^(-)、Br^(-)、Ⅰ^(-)的条件,以硝酸钠为洗脱液,在三十五分钟内完全分离了上述三种离子。进行了一些样品的定量测定。用无换向阀的予柱富集测定了去离子水中ppb级的Cl^(-)。从软硬酸碱理论的观点讨论了Cl^(-)、Br^(-).Ⅰ^(-)的色谱行为,得出了用结构参数及实验条件估算分配系数的经验式:1gD=0.24φg[B]-1g[B]+0.49φ+0.61。The conditions of HPIEC separation of Cl^(-),Br^(-)and I^(-)were studied.The ions were separated within 35 minutes by using NaNO3 as an eluent.the chloride and bromide contents of.some samples were-determined.The trace amounts(ppb order)of chloride in pure water were determined by using a pre-column without a four or six way valve.The IEC becaviouf of Cl^(-),Br^(-)and I^(-)was interpreted from the theory of hard and soft acids and bases.The following experimental formula was obtained.lgD=0.24φlg[B]-lg[B]+0.490+0.61where D is the distribution coefficient of an anion,[B]is the concentra-tion of the eluent,φis the softness of the anion as a base.

关 键 词：高效离子交换色谱法 软硬酸碱理论 阴离子交换树脂 色谱行为 完全分离 分配系数 洗脱液 硝酸钠 

分 类 号：O65[理学—分析化学]