標(biāo)準(zhǔn)號：ISO 9964-3-1993
中文標(biāo)準(zhǔn)名稱：水質(zhì) 鈉和鉀的測定 第3部分:火焰發(fā)射光譜法測定鈉和鉀
英文標(biāo)準(zhǔn)名稱：Water quality; determination of sodium and potassium; part 3: determination of sodium and potassium by flame emission spectrometry
標(biāo)準(zhǔn)類型：C51
發(fā)布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號：C51
國際標(biāo)準(zhǔn)分類號：13.060.50
適用范圍：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.