用空气阴极氘灯对空气──乙炔焰原子吸收光谱法测定纯铝中锌的背景校正

Background Correction by Deuteriam Hollow Cathode Lamp for Determination of Zinc in Pure Aluminium if Air/Acetylene Flame Atomic Absorption Spectrometry

论证了空心阴极氘灯背景扣除能力．用火焰原子吸收法测定炖铝中锌时会遇到背景吸收问题，分别使用了空心阴极锌灯和空心阴极氘灯对含锌量为0．0032％纯铝试样进行两次测定，当测试溶液的基本浓度为0．5％（m/V）时，不扣背景测定也令偏高至0．0044％，扣除背景后规定值为0．0034％．

In this paper,a deuterium hollow cathode lamp was used to eliminate the background in determining Zinc in pure aluminium in air/acetylcne FAAS. A standard sample of 0. 0032% of Zn inpure alurninium was detected two times by a Zinc and a deuteriuxn hollow cathode lampe. In a matrixconcentration of 0. 5%(m/v), 0. 0044% Zn was detected with no background correction and 0.0033% Zn was did with background correction .