饮用水中铝的石墨炉原子吸收光谱测定法  

Determination of Aluminum in Drinking Water by Graphite Furnace Atomic Absorption Spectrometry

作　　者：杨文英[1] 王宝旺[1] 

机构地区：[1]北京市通州区疾病预防控制中心理化科,北京101100

出　　处：《环境与健康杂志》2007年第10期814-815,共2页Journal of Environment and Health

摘　　要：目的建立一种饮用水中铝的石墨炉原子吸收光谱测定法。方法在394.4nm波长下,采集的水样不加基体改进剂,直接用石墨炉原子吸收法进行测定。结果水样中铝的浓度在0～0.600mg/L范围内线性关系良好,相关系数达0.9995。方法的检出限为0.6μg/L,定量限为1.9μg/L,测定样品的相对标准偏差在2.1%～6.4%之间,加标回收率在91.0%～108.0%之间。与309.3nm共振线测定水中铝的结果进行比较,经统计学处理,在这两个波长下测定水中铝的结果差异无统计学意义(P>0.05)。结论该方法操作简单,迅速,准确,线性范围宽,可作为饮用水中铝的检测方法。Objective To establish a method for determination of aluminum in water by graphite furnace atomic absorption spectrometry (GFAAS). Methods Aluminum in water was directly determined by GFAAS at wavelength of 394.4 nm without any matrix modifiers. Results A good linearity (r=0.999 5) was obtained, the linear range was 0-0.600 mg/L. RSD of samples ranged from 2.1% to 6.4%, the average rates of recovery were between 91.0%-108.0%. The detection limit of the method was 0.6 μg/L, the quantitative limit was 1.9 μg/L. There was no significant difference between the results determined at wavelength of 394.4 nm and 309.3 nm. Conclusion This method is simple, rapid, accurate and has a wide linear range. It can be applied in the determination of aluminum in drinking water.

关 键 词：水 铝 石墨炉 原子吸收光谱法 

分 类 号：O657.3[理学—分析化学]