燃烧氧化-缓释-非分散红外吸收法测定土壤中总有机碳(TOC)的研究

Determination of combustion oxidation slow release non dispersed infrared absorption method study on total organic carbon(toc)in soil

本文将常规的燃烧氧化-非分散红外吸收方法进行了优化,在检测流程中添加了缓释步骤来测定不同土壤中TOC含量,实验结果表明,利用该方法建立的标准曲线线性良好,多次测定土壤样品的相对标准偏差较小,该方法有效减少干扰成分和燃烧反应复杂带来的误差,具有干扰小、准确度高、稳定性良好等特点,以期在土壤样品TOC测定中应用。

The total organic carbon(TOC)content in environmental soil is an important indicator reflecting soil organic pol‐lution.This article improves the traditional combustion oxidation non dispersed infrared absorption method for determining TOC by adding a slow-release program to the conventional combustion oxidation non dispersed infrared absorption method for determining the total organic carbon content in different soils.The experimental results show that the standard curve es‐tablished by this method has good linearity,and the relative standard deviation of soil samples measured multiple times is small.This method effectively reduces the errors caused by interference components and complex combustion reactions,It has the characteristics of low anti-interference,high precision,good robustness,and good accuracy,and is expected to be applied in the determination of TOC in soil samples.