【摘要】 利用在无机盐存在下,水溶性高聚物可分为两相的特点,研究了在聚乙二醇-邻苯二酚紫-邻二氮菲-硫酸铵体系中,Ca2+、Al3+、Co2+、Cu2+、Fe3+、Ni2+、Pb2+、Zn2+混合溶液中Ca2+的分离及测定条件,实现了Ca2+与Al3+、Co2+、Cu2+、Fe3+、Ni2+、Pb2+、Zn2+的定量分离和测定。Ca2+质量浓度在0 05～1 0μg/mL范围内具有良好的线性关系,回收率92%～105%。更多还原

【Abstract】 A extraction-spectrophotometric method for the determination of Ca²⁺ in water-soluble polymer was studied, based on the water-soluble polymer solution separated two phases in the presence of inorganic salts. The separation and determination conditions of Ca²⁺ in polyglycol-pyrocatechol violet-o-phenanthroline and ammonium sulfate system were investigated. The results show that Ca²⁺ can be quantitatively separated from the system of Ca²⁺, Al³⁺, Co²⁺, Cu²⁺, Fe³⁺, Ni²⁺, Pb²⁺, Zn²⁺. The linear range for the determination of Ca²⁺ is 0.05～1.0 μg/mL. The recovery was 92%～105%.更多还原