石墨炉原子吸收光谱法测定水中的镍

• 作 者: 王晓琳
• 机 构: 辽宁省大连市甘井子区疾病预防控制中心,
• 出 处: 预防医学论坛
• 发表日期: 2009年03期
• 关键词: 背景校正 原子化器 石墨炉 水样 检出限 实验条件 基体改进剂 相对标准差 硝酸镁 原子化温度

[目的]用PE AA600石墨炉原子吸收光谱仪测定水中镍,并探讨相关实验条件。[方法]以硝酸镁作为基体改进剂,用具横向加热石墨炉原子化器(THGA)系统和纵向Zeeman效应背景校正的PE AA600石墨炉原子吸收光谱仪,直接测定水样。[结果]检出限为1.5μg/L,相对标准差(RSD)0.95%~6.33%,回收率87.6%~107.0%。[结论]本法为一种理想的水中镍测定方法。

[Objective] The purpose was to determine nickel in water with PE AA600 graphite furnace atomic absorption spectrometer and to explore the relevant experimental conditions. [Method] With magnesium nitrate as substrate modifier, water sample was directly determined by PE AA600 Graphite Furnace Atomic Absorption Spectrometer with transverse heating graphite furnace atomizer (THGA) system and longitudinal Zeeman effect background. [Result] The detection limit was 1.5μg / L, RSD 0.95% ~ 6.33%, recovery 87.6% ~ 107.0%. [Conclusion] This method is an ideal method for determination of nickel in water.