荧光光谱法测定水泥中硫酸根含量  

Fluorescence Method for the Determination of Sulfate in Cement Sample

作　　者：邓军桂[1] 赵长凤[1] 蒋治良[1] 

机构地区：[1]广西师范大学资源与环境学系,广西桂林541004

出　　处：《分析测试技术与仪器》2005年第1期10-12,共3页Analysis and Testing Technology and Instruments

基　　金：广西自然科学基金资助项目(No. 004011).

摘　　要：0.1 mol/L HCl-4.0 mg/mL TX 100 -0.05 mol/L BaCl2 溶液体系的荧光很弱,加入 SO2-4 后形成的(BaSO4)n微粒在410 nm、470 nm处产生2个荧光峰,SO2-4 浓度在2.0~80μg/mL浓度范围内与 F470 nm呈线性关系.据此建立了一个测定水泥样品中硫酸根的简便灵敏的荧光光谱分析新方法,其相对偏差(RSD)在 1. 9% ~3 9%之间,回收率在97.0%~102%之间.There is very weak fluorescence for the system of 0.1 mol/L HCl -4.0 mol/L propanetriol(TX-100) -0.05 mol/L BaCl_2. When SO^(2-)_4 is added, Ba^(2+) reacts with SO^(2-)_4 to form (BaSO_4)_n particles. The particle has two strong fluorescence peaks at 470 nm and 410 nm. The fluorescence intensity at 470 nm is linear to SO^(2-)_4 concentration in the range of 2.0～80 μg/mL. The novel fluorescence method has been described for the determination of SO^(2-)_4 in cement samples, with simple and sensitive. Its RSD is in the range of 1.9%～3.9%, and the recovery is in the range of 97.0%～102%.

关 键 词：硫酸根 (BaSO4)n微粒 荧光法 

分 类 号：O657.32[理学—分析化学]