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.
出处
《岩矿测试》
CAS
CSCD
北大核心
1990年第2期103-107,共5页
Rock and Mineral Analysis
关键词
钪
桑色素
荧光法
地质
样品
PMBP
scandium determination
fluorometric analysis, morin
