电感耦合等离子体-原子发射光谱法测定回收氢氧化镍中非金属元素硫和磷的含量

Determination of Sulphur and Phosphorus of Recovered Nickel Hydroxide Simultaneously by ICP-AES

详细研究了使用电感耦合等离子体-原子发射光谱测定回收氢氧化镍中非金属元素硫和磷含量的各种仪器条件。样品直接溶解后可一次完成硫和磷的测定,方法简单快速,检出限低,线性范围宽,精密度好,可用于回收氢氧化镍中非金属元素硫和磷同时测定。该方法的硫和磷检出限(3σ)分别为0.3m g/L、0.6m g/L,其相对标准偏差(RSD)小于2.5%,回收率98.8%—102.9%之间。

The sample of recovered nickel hydroxide was dissolved, and the amounts of sulfur and phosphorus in the sample were determined simultaneously by ICP-AES. The experimental conditions were optimized. The method is simple, fast, lower detection limit, wider linear range and higher precise. The detection limits are 0. 3mg/L and 0.6mg/L （3σ） for sulfur and phosphorus,respectively, with RSD of 2.5% and recovery of 98.8%--102. 9%.