FAAS法测定西北地木耳中9种元素的含量

Determination of Nine Elements in Nostoc commune vauch by Flame Atomic Absorption Specteometry

湿法消解样品，用火焰原子吸收光谱法测定了地木耳中的Ca、Fe、Mg、Mn、Cu、Zn、Na、K、Co等9种元素的含量。各元素标准曲线的相关系数在0．9983-0．9999之间，加标回收率在95．5％-104-5％，相对标准偏差RSD在0．89％-3．45％之间。结果表明，地木耳中含有丰富的人体必需元素，具有很高的营养价值。

The sample were treated by HNO3-HCIO4 system, and nine elements of Ca, Fe, Mg, Mn, Cu, Zn, Na, K and Co in Nostoc commune vauch by flame atomic absorption spectrometry. The standard relative curve coefficients of nine mineral elements range from 0.998 3-0.999 9. The recovery in the range of 95.5 %-104.5 %, the RSD between 0.89 %-3.45 % .The experimental result indicates that Nostoc commune vauch has full of metallic element which human body need, and has rather high nutrient value.