Aluminium has been determined by β-correction spectrophotometer with phenylfluorone (PF)and a non-ionic surfactant, emulsifying OP in PH 8 ammoniacal buffer solution. β-correction spectrophotometric method can elimi...Aluminium has been determined by β-correction spectrophotometer with phenylfluorone (PF)and a non-ionic surfactant, emulsifying OP in PH 8 ammoniacal buffer solution. β-correction spectrophotometric method can eliminate completely the effect of excess PF to increase the analytical sensitivity and decrease error. The results have Shown that Beer's law was obeyed over the concentration range 0-15μg Al (Ⅲ)/25ml and the relative standard deviation was less than 3.3%.展开更多
The synthesis of a new ligand, m-bromobenzenediazoaminoazobenzene (m-BBDA) was carried out. The reaction between m-BBDA and cadmium(II) was sensitive at pH over 12 and in the presence of emulsifier OP. Because of the ...The synthesis of a new ligand, m-bromobenzenediazoaminoazobenzene (m-BBDA) was carried out. The reaction between m-BBDA and cadmium(II) was sensitive at pH over 12 and in the presence of emulsifier OP. Because of the high interference of excess of ligand beta-correction theory was applied instead of the single wavelength method. This study gave the simple determination of the complex ratio, real molar absorptivity (epsilon) and step or cumulative stability constant (K).展开更多
文摘Aluminium has been determined by β-correction spectrophotometer with phenylfluorone (PF)and a non-ionic surfactant, emulsifying OP in PH 8 ammoniacal buffer solution. β-correction spectrophotometric method can eliminate completely the effect of excess PF to increase the analytical sensitivity and decrease error. The results have Shown that Beer's law was obeyed over the concentration range 0-15μg Al (Ⅲ)/25ml and the relative standard deviation was less than 3.3%.
文摘The synthesis of a new ligand, m-bromobenzenediazoaminoazobenzene (m-BBDA) was carried out. The reaction between m-BBDA and cadmium(II) was sensitive at pH over 12 and in the presence of emulsifier OP. Because of the high interference of excess of ligand beta-correction theory was applied instead of the single wavelength method. This study gave the simple determination of the complex ratio, real molar absorptivity (epsilon) and step or cumulative stability constant (K).
