微波消解-ICP-OES法测定油菜蜂花粉中的矿物元素

Determination of Mineral Elements of Bee-pollen of Brassica campestris L. by Microwave Digestion-ICP-OES

摘要:

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油菜蜂花粉中的矿物元素，共检出17种。17种元素分析结果的相对标准偏差在0.85%~6.97%之间，其中14种元素在5%以内；测定了13种元素的加标回收率，在93.5%~107.3%之间，其中9种元素在100%±5%范围内。油菜蜂花粉中所含S、P、K、Ca、Mg、Na等常量元素的质量分数分别为0.74%、0.59%、0.35%、0.23%、0.13%、0.0064%；微量元素Fe、B、Zn、Mn、Se、Cu、Sr、Ba、Ti、Si、Al等的含量分别为14.3、6.41、2.40、1.64、1.23、0.69、0.54、0.44、0.10、50.7、25.8 mg/kg。

Abstract:

Samples were treated by wet microwave digestion procedure with HNO3/H2O2 and the mineral elements in bee-pollen of Brassica campestris L. were completely analyzed by inductively coupled plasma optical emission spectrometer (ICP-OES). The results showed there were 17 mineral elements in the samples. The RSD of the determined values were between 0.85% and 6.97%. And RSD of the contntes of14 elements was within 5%. Standard recovery rate of 13 elements was 93.5 %-107.3 % and 9 mineral elements was within 100 %±5 %. The mass fractions of such necessary macroelements, including S, P, K, Ca, Mg and Na, were 0.74%, 0.59%, 0.35%, 0.23%, 0.13% and 0.0064%, respectively. The contents of the microelement Fe, B, Zn, Mn, Se, Cu, Sr, Ba, Ti, Si and Al were 14.3, 6.41, 2.40, 1.64, 1.23, 0.69, 0.54, 0.44, 0.10, 50.7 and 25.8 mg/100g, respectively.