金银花中多种金属元素的炭化酸溶法-ICP-AES研究

金银花为忍冬属植物, 是我国常用的传统珍贵药材，同时也是制作清凉饮料的重要原料，具有“清热解毒, 凉散风热”之功效。主治痈肿疗疮、喉痹、丹毒、热毒血痢、风热感冒、温病发热等症。文章介绍了采用炭化酸溶法进行消解, 用电感耦合等离子体原子发射光谱法同时测定试样中Cu, Mn, Ni, Pb, Fe, Cr, Ca和Mg等多种金属元素的方法。其检出限为0.002 4～0.049 2 μg·mL-1,变异系数1.1%～4.9%。元素的回收率为83.8%～115.6%。发现金银花中含有丰富的Ca, Mg, Fe和Mn含量相对较高。

Study on Determination of Metal Elements in Honeysuckle by Carbon Pick-Up Acid Dissolvation Digestion with ICP-AES

Honeysuckle is a lonicera plant,commonly used traditional precious raw material for medicine in China,and is a commonly used Chinese native medicine and an important material for cold drink.Honeysuckle has the effect of alleviating fever and disintoxicating,and is used mainly to treat the carbuncular swelling,and cure boils,throat rheumatism,erysipelas,painfully hot sun blood dysentery,cold,and various diseases accompanied by fever.The simultaneous determination of multi-metal elements in honeysuckle was studied by inductively coupled plasma atomic emission spectrum(ICP-AES) after carbon pick-up acid dissolvation digestion.The average recovery of the method for Cu,Mn,Ni,Pb,Fe,Cr,Ca and Mg in honeysuckle was found to be 83.8%-115.6%,while RSD(n=10) is 1.1%-4.9% for the multi-elements in honeysuckle.The method was applied to the analysis of some practical samples and the results obtained were satisfactory.Fe and Mn are rather rich in honeysuckle.It is of important significance to assess the value of the food cooked with medicinal herbs by the determination of multi-trace elements.