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Application of microwave digestion in determination of the total nitrogen and phosphorus in wetland plants

机译：微波消解在湿地植物中总氮和磷测定的应用

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This article reported the best conditions for plant sample microwave digestion using sulfuric acid-hydrogen peroxide (H_2SO_4 - H_2O_2) technology with the closed vessel microwave digestion system and pressure controlling part, established the spectrophotometry method to measure the total nitrogen and phosphorus in constructed wetland plants. The effects of the ratio of H_2SO_4 and H_2O_2 in this system and the digestion time were discussed. The perfect conditions of microwave digestion were found out to this procedure. The optimum parameters for the closed vessel microwave digestion system were that the reagent was the mixture of H_2SO_4 and H_2O_2, the ratio of volume between H_2SO_4 and H_2O_2 was 2: 1, the ratio between solid quality and liquid volume was 1: 45 and the digestion time was 10 minutes. Under this optimum condition, parallel experiments were completed. The methods and results of microwave digestion were also compared with traditional digestion. This method consumes few reagents, is simple and easy to use and causes less pollution. This method was used to determine the amount of TN and TP in the plant samples and the precision and accuracy are satisfactory.
机译：本文报告了使用硫酸 - 氢气过氧化氢（H_2SO_4 - H_2O_2）技术的植物样品微波消解的最佳条件与闭合容器微波消化系统和压力控制部分，建立了分光光度法测量构造湿地植物中的总氮和磷。讨论了H_2SO_4和H_2O_2在该系统中和消化时间的比率的影响。此程序发现了微波消解的完美条件。封闭容器微波消化系统的最佳参数是试剂是H_2SO_4和H_2O_2的混合物，H_2SO_4和H_2O_2之间的体积比为2：1，固体质量和液体体积之间的比例为1：45，消化时间是10分钟。在这种最佳条件下，完成平行实验。与传统消化相比，微波消解的方法和结果也与传统的消化相比。这种方法消耗少量试剂，简单易​​用，造成较少的污染。该方法用于确定植物样品中TN和TP的量，精度和精度是令人满意的。

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