常规火焰原子吸收光谱法测定水中的痕量砷

Determination of Trace Arsenic in Water by Using Routine Flare Atomic Absorption Spectrum

利用砷、镉在 2 2 8.8nm波长处重叠谱线的光谱干扰效应 ,研究了砷、镉共存体系的干扰特点 ,采用均匀设计 ,数学方法和计算机技术进行数据处理 ,实现了用常规火焰原子吸收光谱法同时测定痕量砷和镉 ,其中测定砷的灵敏度可达 10ng/ml,利用该方法分析了水中的痕量砷 ,其结果令人满意。

Interference characteristics of arsenic cadmium coexisting system is researched using spectral interference effect of overlapped spectral line at a wavelength of 228.8 nm. By using even design, mathematical method and computer aided data processing, trace arsenic and cadmium are determined simultaneously by routine flare atomic absorption spectrum, in which the sensitivity of arsenic determination can reach 10 ng/ml. The result is satisfying in determination of trace arsenic in water using this method.