ISO 9964-3:1993 水质.钠和钾的测定.第3部分：用火焰发射光谱法测定钠和钾

标准编号：ISO 9964-3:1993

中文名称：水质.钠和钾的测定.第3部分：用火焰发射光谱法测定钠和钾

英文名称：Water quality — Determination of sodium and potassium — Part 3: Determination of sodium and potassium by flame emission spectrometry

发布日期：1993-05

标准范围

规定方法的原理是将样品吸入具有足够热能的气体火焰中，以使存在的任何钠和钾发出其特征辐射，并在589,0 nm（钠）和766,5 nm（钾）波长下测量强度。适用于钠和钾的质量浓度高达10 mg/l的水样。对于更高浓度，取较小的试验部分进行分析。钠和钾的测定下限均小于0.1 mg/l。

The principle of the method specified is aspirating the sample into a gas flame of sufficient thermal energy to cause any sodium and potassium present to emit its characteristic radiation and measuring the intensity at a wavelength of 589,0 nm for sodium and 766,5 nm for potassium. Applies to water samples with a mass concentration of sodium and potassium of up to 10 mg/l. For higher concentrations, a smaller test portion is taken for analysis. The lower limits of determination are less than 0,1 mg/l for both sodium and potassium.

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