A Novel In-situ Method for Measuring Soil Organic Carbon Using Photoacoustic Sensor
A Novel In-situ Method for Measuring Soil Organic Carbon Using Photoacoustic Sensor
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DOI：
10.1109/sensors52175.2022.9967116
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发表时间：
2022-10
期刊：
影响因子：
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通讯作者：
Md Faishal Yousuf;Shaad Mahmud;Baikun Li;Yu Lei;Haiying Tao
中科院分区：
文献类型：
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作者：
Md Faishal Yousuf;Shaad Mahmud;Baikun Li;Yu Lei;Haiying Tao
土壤的有机和无机元素表现出广泛的物理和化学特性。许多生态和土壤科学研究以及全球气候变化研究都需要精确的土壤成分估计。估计土壤变量的最典型方法涉及在实验室中收集和分析数据，这是耗时且昂贵的。本文提出了一种利用土壤燃烧法快速、原位评估土壤有机碳的方法。在建议的方法中，带有加热探头的金属管将土壤加热到约400°C。热量氧化已知体积的土壤样品，产生CO2。为了估计土壤有机碳，CO2传感器测量管顶部累积的CO2浓度。进行了实验室实验，以证明所提出的方法的潜力。
Organic and inorganic elements of soil exhibit a wide range of physical and chemical characteristics. Exact soil composition estimates are required for many ecological and soil science studies and global climate change research. The most typical method for estimating soil variables involves collecting and analyzing data in a laboratory, which is time-consuming and expensive. This paper proposes a rapid, in-situ approach for assessing soil organic carbon utilizing the soil combustion method. In the suggested approach, a metal tube with a heating probe heats the soil to approximately 400°C. The heat oxidizes a known-volume soil sample, creating CO2• To estimate soil organic carbon, a CO2 sensor measures the accumulated CO2 concentration at the tube's top. A laboratory experiment was undertaken to demonstrate the proposed method's potential.