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目的建立电感耦合等离子体-原子发射光谱法同时测定考核水样中铝、锑、砷、钡、铍、硼、镉、铬、铜、铁、铅、锰、钼、镍、硒、银、铊、钒、锌共19种微量元素含量的分析方法。方法优化了仪器条件,提高了信噪比,避免了谱线干扰,水样按考核要求用0.5%硝酸稀释后直接进样分析。结果 19种微量浓度在0～2.0μg/ml范围内呈良好线性关系,方法最低检出限在0.3～6.3μg/L,回收率为89.0%～105.1%,相对标准偏差(RSD)为0.18%～4.30%。结论该方法是一种快速,灵敏,准确的分析方法,可用于考核水样中19种微量元素的同时测定。
OBJECTIVE To establish an inductively coupled plasma atomic emission spectrometry method for the simultaneous determination of aluminum, antimony, arsenic, barium, beryllium, boron, cadmium, chromium, copper, iron, lead, manganese, molybdenum, nickel, selenium, , Vanadium, zinc, a total of 19 kinds of trace elements analysis. Methods The instrument conditions were optimized, the signal-to-noise ratio was improved, and the interference of spectral lines was avoided. The water samples were directly analyzed by dilution with 0.5% nitric acid. Results The 19 trace concentrations showed a good linearity in the range of 0 ~ 2.0 μg / ml with the detection limits of 0.3 ~ 6.3 μg / L and the recoveries of 89.0% ~ 105.1%. The relative standard deviations (RSDs) were 0.18% ~ 4.30%. Conclusion This method is a rapid, sensitive and accurate method for the simultaneous determination of 19 trace elements in water samples.