8种海藻中7种金属元素含量的测定

Determination of Seven Metal Elments in Eight Algaes

采用火焰原子吸收光谱法测定了谷粒马尾藻、鼠尾藻、海青菜、匍枝马尾藻、裙带菜、大叶藻、矶石鸡冠藻(红、白)这8种藻类植物中钙、镁、铁、锰、铜、锌、钾7种元素的含量。结果表明,这些海藻中含有较丰富的钙、镁、铁、钾元素,而铜、锰、锌元素含量相对较少。钙元素的含量最为丰富,铜的含量最少。该方法的加标回收率在95.7%—101.1%之间,RSD值在0.054%—1.764%之间,具有较好的准确度和精密度。本实验结果为这些藻类植物的食用,药用以及饲养价值提供了依据。

The contents of seven elements such as Ca,Mg,Fe,Mn,Cu,Zn,K in eight algaes,such as Sargassumgranuliferum,S.thunbergii（Mert.）Kuntze,Tangle,Sargassumpolycystum,Undaria pinnatifida（Harv）,Herba Zosterae Marinae,Catenella opuntia（Good,et Woodw.）Grev（red,white）were analysised by flame atomic absorption spectrometry.Those algaes are rich in Ca,Mg,Fe,K,but Cu,Mn and Zn was relatively small.Particularly,Ca is the most abundant element,and Cu is the lowest.The additional standard recovery was obtained between 95.7% and 101.1%,and RSD was between 0.054% and 1.764%.The method has good accuracy and precision,and the results support basis for edible,officinal and feeding value of those algae.