ISO 11438-6:1993 镍铁 用电热原子吸收光谱法对痕量元素含量 第6部分:铊含量的测定
标准编号:ISO 11438-6:1993
中文名称:镍铁 用电热原子吸收光谱法对痕量元素含量 第6部分:铊含量的测定
英文名称:Ferronickel — Determination of trace-element content by electrothermal atomic absorption spectrometric method — Part 6: Determination of thallium content
发布日期:1993-11
标准范围
规定方法的原理是将试验部分溶解在硝酸中,使用配备石墨炉电热雾化器的原子吸收光谱仪在276,8 nm波长下测量试验溶液中铊光谱的共振线能量吸收,并使用ISO 11438-1中描述的标准加入法进行校准。适用于镍铁中0.3 g/t至1.0 g/t范围内的铊含量。
The principle of the method specified is dissolution of a test portion in nitric acid, measurement of the absorption of the resonance line energy from the spectrum of thallium in the test solution at a wavelength of 276,8 nm by an atomic absorption spectrometer fitted with a graphite furnace electrothermal atomizer, calibration by the standard additions method described in ISO 11438-1. Applies to thallium contents in the range of 0,3 g/t to 1,0 g/t in ferronickel.
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