采用微波消解法消解样品,利用电感耦合等离子体-发射光谱法(ICP-OES)测定滇杨中的矿质元素。方法的RSD为0.5%—3.8%,加标回收率为96.7%—104.4%,表明该方法有良好的精密度和准确度。用该法对滇杨样品中的钙、镁、铁、锌、钾、锰、磷、硼、铜、钠、硅等11种矿质元素进行测定,发现铜含量明显偏低,不能达到植物生长需要的正常水平,其他10种元素能达到维持植物正常生长所需量。 The samples were digested by microwave digestion and the mineral elements in Populus tomentosa were determined by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-OES). The RSD of the method was 0.5% -3.8%, and the recoveries of spiked samples were 96.7% -104.4%, indicating that the method has good precision and accuracy. The method was applied to the determination of 11 mineral elements such as calcium, magnesium, iron, zinc, potassium, manganese, phosphorus, boron, copper, sodium and silicon in the samples of Dian Yang and found that the copper content was obviously low and could not meet the needs of plant growth Of the normal level, the other 10 kinds of elements can achieve the normal growth of plants needed to maintain the amount.