全谱直读电感耦合等离子体发射光谱法测定青海蕨麻中矿质元素

采用HNO3/H2O2湿法微波消解制样,利用全谱直读电感耦合等离子体原子发射光谱法(ICP-OES),全面详细地分析测定了蕨麻中的矿质元素。共检出17种,分析结果相对标准偏差(RSD,n=9)在0.33%～10.8%之间,其中15种元素在5%以内;加标回收率在92.7%～108.5%之间,其中11种元素在(100±5)%范围内。蕨麻中所含的P、K、S、Mg、Ca、Na等人体常量元素的质量分数分别为0.94%、0.86%、0.45%、0.20%、0.14%和0.006%;人体必需微量元素Fe、Zn、Cu、Cr等的含量分别为25.8、1.84、0.32、0.086mg/100g;人体可能必需元素Si、Mn、B的含量分别为87.9、1.27、1.15mg/100g;此外还含有36.7mg/100g的Al以及微量的Sr、Ti、Ba等元素。

Determination of mineral elements in roots of potentilla anserine L. from Qinghai by inductively coupled plasma optical Emission spectrometer

By wet digestion procedure with HNO 3 /H2 O2 to prepare samples, The mineral elements in Potentilla anserine L. were completely analyzed by inductively coupled plasma optical emission spectrometer(ICP-OES). The results showed there were 17 mineral elements in Potentilla anserine L. The RSD of results were between 0.33% and 10.8%, and that of 15 elements was less than 5%. Standard recovery rates were between 92.7% and 108.5%, those of 11 elements were within (100±5)%. The mass fraction of P, K, S, Mg, Ca and Na which are necessary macroelements in the human body, were 0.94%, 0.86%, 0.45%, 0.20%, 0.14% and 0.006%, respectively. The contents of some necessary microelements, for example Fe, Zn, Cu and Cr, were25.8, 1.84, 0.32, 0.086 mg/100 g, respectively. The contents of those elements such as Si, Mn, B, which maybe necessary to the human body, were 87.9, 1.27, 1.15 mg/100 g,respectively. In addition to 36.7 mg/100 g of Al and trace of Sr, Ti, and Ba were detected.