TDX-01填充柱 气相色谱法测定稻田甲烷排放通量

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气相色谱法测定稻田甲烷排放通量
气相色谱法测定稻田甲烷排放通量 详细信息：

名称：填充柱
规格：2m*3mm
型号：TDX-01

浩瀚色谱（山东）应用技术开发有限公司利用静态箱/气相色谱法对川中丘陵区稻油轮作稻田进行水稻全生长季CH4排放观测。结果表明:稻田CH4排放有明显的季节变化,呈“前低后高”的变化趋势,稻田CH4排放峰出现在水稻抽穗扬花期;测定期内稻田CH4平均排放通量为6.20 mg·m-2·h-1。对影响稻田CH4排放的因素分析发现,淹水条件下水稻移栽到抽穗初期,水稻植株生长是影响稻田CH4排放的关键因素;随着水稻植株生长完成营养生长,水稻抽穗期到成热期,温度成为影响稻田CH4排放的关健因素。稻油菜轮作稻田在水稻生长季中CH4排放总量为173.96 kg·hm-2。

气相色谱法测定稻田甲烷排放通量  测试谱图：



Determination of methane emission flux from rice fields by gas chromatography
Determination of methane emission flux in rice fields by gas chromatography. Details:

Name: Packed column
Specification: 2m*3mm
Model: TDX-01

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. used static chamber/gas chromatography to observe the CH4 emission of rice in the whole growing season of rice oil rotation paddy fields in the hilly area of central Sichuan. The results show that CH4 emissions from rice fields have obvious seasonal changes, showing a trend of "low before and high". The peak of CH4 emissions in rice fields occurs at the heading and flowering stage of rice; the average CH4 emissions flux from rice fields during the measurement period is 6.20 mg·m-2 · H-1. Analysis of the factors affecting CH4 emissions in rice fields found that rice plant growth is the key factor affecting CH4 emissions from rice transplanting to the early stage of heading under flooding conditions; as rice plants grow to complete vegetative growth, rice heading to the hot stage. Temperature has become a key factor affecting CH4 emissions from rice fields. During the rice growing season, the total CH4 emission from rice and rape rotation paddy fields was 173.96 kg·hm-2.

Gas Chromatography Method for Measuring Paddy Field Methane Emission Flux Test Spectra: