摘要
利用鲁米诺－Ｉ＿２的化学发光体系与Ａｓ（Ⅲ）的无机偶和反应，确定Ｉ＿２库仑滴定法的终点，实验证明，此法测砷的灵敏度高（检测限３．０×１０￣（－８）ｇ／Ｌ），线性范围１．０×１０￣（－６）ｇ／Ｌ～３．５×１０（－８）ｇ／Ｌ，且选择性好，仪器装置简单，操作方便．
Using chemical luminescence system of luminol-I_2,and inorganic cou-pling reaction of arseic(Ⅲ),the terminal point of iodine coulomb titrationwas dedermined. Experiments proved high sensitivity in determination of ar-senic by this method (limit of detection 3. 0×10￣(-8) g/L),and the calibrationcurve was linear over the concentration range of 1×10(-6) g/L～3. 5 × 10￣(-8) g/L.The instrument install was simple and easy to handle.
出处
《山东师范大学学报（自然科学版）》
CAS
1994年第1期47-50,共4页
Journal of Shandong Normal University(Natural Science)
关键词
砷
库仑滴定
化学发光分析
Luminol-I_2 ,Chemiscal Luminescencl,Arsenic.Coulomb titration
