石墨炉原子吸收光谱法测定婴幼儿食品及乳品中钼

Determination of molybdenum in foods for infants and young children, milk and dairy products by Furnace Atomic Absorption Spectrometry

建立了石墨炉原子吸收光谱法测定婴幼儿食品及乳品中钼的方法。样品通过干法灰化,硝酸溶解,注入具有塞曼背景装置的原子吸收分光光度计石墨炉中,石墨炉选择了适宜的升温程序。被测元素电热原子化后,吸收313.3 nm共振线,在一定浓度范围内,其吸收值与质量浓度成正比。回收率在92.4%～103.3%,精密度（RSD）为2.10%～5.24%,检出限为0.2μg/kg,该方法可用于乳与乳制品中钼的测定。

A method for determination of molybdenum in milk and dairy products by Furnace Atomic Absorption Spectrometer. Samples by dry ashing,Nitric acid dissolve,Injected with zeeman background installations in graphite furnace atomic absorption spectrophotometer,Select the appropriate graphite furnace heating program.Element being tested after the electrothermal atomization,313.3nm resonance absorption lines,In the context of a certain concentration,Its absorption is proportional to the mass concentration.The recovery were 92.4%～103.3%,the relative standard deviations（RSD） were 2.10%～5.24%, the minimum detectable was 0.2 ug/kg. This method can be used for determination of molybdenum in milk and dairy products.