灰化温度对测定植物样微量元素含量的影响

Effects of Incinerating Temperatures on Assaying Microelements in Plant Leaves

本文报道了用瓷坩埚高温灰化包菜、槲叶样品,灰化温度对测定微量Cu、Mn、Fe、Zn含量的影响。结果表明测定植物样微量Cu、Mn、Fe、Zn含量时,可以用瓷坩埚进行高温灰化,适宜灰化温度分别为450～550、450～550、450～600、450～500℃;同时测定该四种元素含量时,适宜灰化温度为450～500℃。且500℃灰化时,元素的平均回收率为96%～108%。

This paper reported that incinerating temperature effects on assaying content of Cu、Mn、Fe and Zn microelements when porcelain crucible incinerated Brassia oleracea leaves and Mongolian oak leaves were used as samples. The results indicated that the method was feasible in using porcelain crucible for incinerating of plant samples under high temperature. When assaying contents of Cu、Mn、Fe and Zn microelement. The optimum incinerating temperatures were 450～550、 450～550 、450～600、450～500℃, respectively the optimum incinerating temperature would be 450～500℃ when assaying the contents of this four microelement at the same time. The recovery rate of microelement was 96%～108% when incinerating temperature was 500℃.