论文部分内容阅读
烧失量是土壤矿质全量分析中的一个不可缺少的测定项目。烧失量是指:烘干土在马福炉高温灼烧下失去重量的部分。通常认为它应包括:有机质、结合水以及碳酸盐中的二氧化碳等。烧失量的测定因操作比较简单而往往不被重视。但全量分析结果以烘干土为计算基础时,需在各分量总和中加上烧失量才能使结果接近于100％。另外,矿质全量分析又往往以灼烧土为基础而报出结果,也就是说以灼烧后的土重为基础来换算各矿质元素成分的百分含量。因而烧失量的测定无论对于分析资料的审核和结果的报出都有重要意义。同时,烧失量本身也是土壤的一大特性。这就要求对烧失量的测定精度高而准确。
Loss on ignition is one of the indispensable measurement items in soil total mineral analysis. Loss on ignition refers to: drying soil in the muffle burning under the weight loss of the part. It is generally assumed that it should include: organic matter, bound water, and carbon dioxide in carbon dioxide. Determination of loss on ignition due to the operation is relatively simple and often not be taken seriously. However, when the full analysis results are calculated on the basis of dry soil, the loss on ignition should be added to the sum of all the components so that the result is close to 100%. In addition, the total mineral analysis is often based on the burning of soil and reported the results, that is, after burning the weight of the soil to the conversion of the mineral elements of the percentage content. Therefore, the determination of loss on ignition is of great significance both for the review of the data and for the presentation of the results. At the same time, the loss on its own is also a major feature of the soil. This requires the determination of loss on ignition accuracy and accuracy.