A method of spectrophotometric determination of micro amounts of platinum with MPT was proposed.Beers law is obeyed in the range of 0~3.7mg·L1Pt(Ⅳ),an apparent molar absorptivity of ε682.0=5.46×104L...A method of spectrophotometric determination of micro amounts of platinum with MPT was proposed.Beers law is obeyed in the range of 0~3.7mg·L1Pt(Ⅳ),an apparent molar absorptivity of ε682.0=5.46×104L·mol-1·cm-1.The method has been applied to the determination of platinum in minerals and catalysts with satisfactory results.展开更多
新显色剂N 烯丙基 N' (4 萘磺酸钠)硫脲(ASNTu)与银在氨性介质中能形成稳定的1∶1棕色水溶性配合物,最大吸收波长在380nm,摩尔吸收系数为4.3×104L.mol-1.cm-1;银量在0~12.5μg/25mL范围内服从比尔定律。此法显色稳定,选择性好...新显色剂N 烯丙基 N' (4 萘磺酸钠)硫脲(ASNTu)与银在氨性介质中能形成稳定的1∶1棕色水溶性配合物,最大吸收波长在380nm,摩尔吸收系数为4.3×104L.mol-1.cm-1;银量在0~12.5μg/25mL范围内服从比尔定律。此法显色稳定,选择性好,操作简单。用于阳极泥和地质样品中银的测定,均获得满意结果。展开更多
文摘A method of spectrophotometric determination of micro amounts of platinum with MPT was proposed.Beers law is obeyed in the range of 0~3.7mg·L1Pt(Ⅳ),an apparent molar absorptivity of ε682.0=5.46×104L·mol-1·cm-1.The method has been applied to the determination of platinum in minerals and catalysts with satisfactory results.
文摘新显色剂N 烯丙基 N' (4 萘磺酸钠)硫脲(ASNTu)与银在氨性介质中能形成稳定的1∶1棕色水溶性配合物,最大吸收波长在380nm,摩尔吸收系数为4.3×104L.mol-1.cm-1;银量在0~12.5μg/25mL范围内服从比尔定律。此法显色稳定,选择性好,操作简单。用于阳极泥和地质样品中银的测定,均获得满意结果。