微波消解技术在土壤重金属元素测定中的应用

Application of Microwave Resolution Technology in Determination of Heavy Metal in Soil

本文阐述了用微波消解-原子吸收分光光度法和原子荧光光度法测定土壤中铜、锌、铅、镉、铬、砷、汞.通过多种消解酸体系实验,摸索出硝酸-盐酸-氢氟酸-过氧化氢（硝酸-盐酸-过氧化氢）最佳土样消解方法.实验结果表明,该方法在分析土壤标准样品中铜、锌、铅、镉、铬、砷、汞时测定结果与保证值基本符合,且重复性较好,是一种用酸量少,简便快捷,环境污染少、准确度和精密度均较高的消解方法.

This article reported the best conditions for soil sample microwave resolution using the nitric acid-hydrochloric acid-hydrofluoric acid-hydrogen peroxide （nitric acid-hydrochloric acid-hydrogen peroxide） technology,established the microwave dispelling-atomic absorption spectrophotometric method and the atomic fluorescence method to measure several kind of heavy metal elements in the soil samples.This method consumes few reagent,is simple and easy to use and causes less pollution.This method was used to determine the amount of copper,zinc,lead,cadmium,chromium,arsenic and mercury in the soil standard samples and the result matched the guaranteed value.