悬浮液进样火焰原子吸收光谱法测定环境样品中钙、镁

Determination of Calcium and Magnesium in Environmental Samples by Flame Atomic Absorption Spectrometry Using a Slurry Technique

将环境样品制成悬浮液 ,用空气 /乙炔火焰原子吸收光谱法测定钙、镁 ,以三氯化镧、丙三醇和高氯酸为混合抗干扰剂 ,有效消除了环境样品中铅、磷、硫、硅等共存元素的干扰 ,其中丙三醇不仅是抗干扰剂 ,而且还起着稳定剂的作用 ,进一步简化了测定步骤 ,有效提高了分析速度。本文通过水溶液标准曲线校正 ,使测定更加方便。对测定结果与湿法消化法比较 ,具有较好的相关性。本法简便、快速。

A simple and rapid method was proposed for the determination of Calcium and Magnesium in environmental samples by flame atomic absorption spectrometry using a slurry technique.The anti-interferential agents were lanthanum chloride,glycerol and perchloric acid.The method was simpler,faster and more accurate than normal method of decomposed sampling.