【摘要】 本文采用含磷10μg/ml的5×10^-3mol/L钼酸铵-0.5mol/L硫酸-20％（V/V）丙酮溶液为电极修饰液,制备了性能优良的以玻碳为基体的PMo₁₂薄膜修饰电极,并应用于植酸中无机磷的测定。检测限为0.04μg/ml磷;相对标准偏差（n=5）为4.32％,加标回收率为98％～108％。本法还可应用于植酸及其它含磷试样的分析。更多还原

【Abstract】 The PMo₁₂-modified glassy carbon electrode has been prepared by electrochemical method in a solution containing 10μg/ml of phosphorus—5×10^-3 mol/L of molydbate -0.5mol/L of sulfuric acid -20%（V/V）, acetone, by 10 scans between 600～100 mV（vs. Ag/AgCl） at a scan rate of 100 nV/s. The electrode has been applied to the determination of inorganic phosphorus in phytic acid by cyclic voltammetry. The detection limit is 0.04μg/ml for phosphorus. The relative standard deviation（n=5） is 4.3%, the recovery is 98%～108%.更多还原