水质 钠和钾的测定 第1部分:原子吸收光谱法测定钠

[中文适用范围]： 该方法的原理是向样品中添加氯化铯溶液作为电离抑制剂，将样品直接吸入原子吸收光谱仪的空气/乙炔火焰中，并测量波长 589.0 nm 处的吸光度。 适用于钾质量浓度在 5 mg/l 至 50 mg/l 范围内的水样。 如果选择其他稀释因子，则可以扩展该范围。 [外文原描述]： The principle of the method specified is adding a caesium chloride solution to the sample as an ionization suppressant, aspirating the sample directly into the air/acetylene flame of an atomic absorption spectrometer and measuring the absorbance at a wavelength of 589,0 nm. Applies to water samples with a mass concentration of potassium in the range from 5 mg/l to 50 mg/l. This range can be extended if other dilution factors are chosen.