微波消解ICP-AES测定垃圾填埋场土壤及植物中的重金属

Determination of Heavy Metals in Landfill Soil and Plants by ICP-AES with Microwave Digestion

建立了微波消解电感耦合等离子体．原子发射光谱法（ICP-AES）以及快速测定垃圾填埋场植物和土壤中重金属含量的测定方法。结果表明：土壤用HCI-HNO3-HF-H2O2（9：3：2：2）混合体系，植物用HCI．HNO3．H2O2（6：2：2）混合体系，消解完全。ICP-AES测定Ba、As、Cd、Cr、Cu和Pb，相关系数，．可达0．9998以上，加标回收率97％--104％，相对标准偏差小于3．7％。方法快速简便、检出限低、精密度好，结果令人满意。

Microwave digestion-inductively coupled plasma-Atomic emission spectrometry （ICP-AES） was established, for rapid determination of heavy metals in refuse landfill soil and plants. It is shown that soil and plants were completely digested by HCI-HNO3-HF-H202 （9：3：2：2） and HCI-HNO3-H2O2 （6：2：2）, respectively. With this method, Ba, As, Cd, Cr, Cu, and Pb can be determined by ICP-AES. It is found that correlation coefficient can reach at 0.9998 with the recovery rate between 97%-104% and relative standard deviation less than 3.7%. This method is of advantages of high-speed, easy for use, low detection limit, and good precision.