PMBP萃取分离桑色素荧光法测定地质样品中痕量钪  

PMBP-Extraction and Fluorescence Determination of Trace Sc with Morin

作　　者：郎庆勇 李连仲[1] 

机构地区：[1]地矿部岩矿测试技术研究所

出　　处：《岩矿测试》1990年第2期103-107,共5页Rock and Mineral Analysis

摘　　要：在磺基水杨酸存在下,以1-苯基-3-甲基-4-苯酰基吡唑酮-5(PMBP)萃取,5％HBr反萃取,桑色素荧光法可灵敏、快速、准确地测定地质样品中痕量Sc。λ_(ex)为420nm,λ_(em)为500nm,测定下限为0.02μg/ml,0—8μg Sc/10ml同相对荧光强度呈线性。Scandium (Ⅲ) Can be extracted into benzene phase by 0.0lmol/L PMBP and counterextracted with 5% HBr in the presence of sulfosalicylic acid. All interfering elements were separated completely. Trace Sc could be determined with morin by a fluorescence method, with a lower determination limit of 0.02μg/ml and a linear calibration for 0-8μg Sc/10ml. λcx is at 420nm and λem is at 500nm. The method is sensitive and accurate and has been applied to determine Sc in geochemical reference samples with success.

关 键 词：钪 桑色素 荧光法 地质 样品 PMBP 

分 类 号：P575.3[天文地球—矿物学]