PQ 海水和沉积物中N_2O的测定填充柱

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海水和沉积物中N_2O的测定填充柱
海水和沉积物中N_2O的测定填充柱 详细信息：

名称：填充柱
规格：2m*1/8
型号：PQ
应用：海水中溶解氧化亚氮的测定 顶空平衡-气相色谱法


氧化亚氮(N_2O)是一种氮氧化物,在全球氮循环中扮演着重要角色;N_2O是温室气体之一,也是臭氧层的耗竭物之一。随着工农业生产和社会经济的发展,大气中N_2O的含量以每年约0.2%的速率增加。海洋是N_2O的重要源,研究海洋中N_2O的时空分布,有利于估算海洋释放的N_2O量。因此,发展灵敏的海水和沉积物中N_2O的分析方法成为关键所在。

浩瀚色谱（山东）应用技术开发有限公司建立了海水中N_2O的常温吹扫捕集-气相色谱分析法 考察了不同吸附材料对N_2O的捕集能力,选择常温下捕集效率的80～100目5A|°分子筛为吸附材料。对柱温、吸附温度、脱附温度、吹扫时间、吹扫气流速等实验条件进行了优化。检测限达2.8×10~(-10) mol/L,标准工作曲线的线性相关系数达0.9995(n=5),线性范围为3.4～39.2×10~(-9) mol/L,5条曲线斜率的相对标准偏差为2.84%,回收率为93.93±3.1%(n=5)。

海水和沉积物中N_2O的测定填充柱  测试谱图：



Packed column for the determination of N_2O in seawater and sediments
Packed column for the determination of N_2O in seawater and sediment Details:

Name: Packed column
Specification: 2m*1/8
Model: PQ
Application: Determination of Dissolved Nitrous Oxide in Seawater Headspace Equilibrium-Gas Chromatography


Nitrous oxide (N_2O) is a kind of nitrogen oxide, which plays an important role in the global nitrogen cycle; N_2O is one of the greenhouse gases and one of the depletion of the ozone layer. With the development of industrial and agricultural production and social economy, the content of N 2 O in the atmosphere is increasing at a rate of about 0.2% per year. The ocean is an important source of N_2O. Studying the temporal and spatial distribution of N_2O in the ocean is helpful to estimate the amount of N_2O released by the ocean. Therefore, the development of reliable and sensitive analysis methods for N_2O in seawater and sediments has become the key.

Haohan Chromatography (Shandong) Applied Technology Development Co., Ltd. established a room temperature purge and trap for N_2O in seawater-gas chromatography to investigate the N_2O capture capacity of different adsorbents, and select the best capture efficiency of 80-100 at room temperature. Mesh 5A|° molecular sieve is the adsorption material. The experimental conditions such as column temperature, adsorption temperature, desorption temperature, purge time, and purge gas flow rate were optimized. The detection limit is up to 2.8×10~(-10) mol/L, the linear correlation coefficient of the standard working curve is up to 0.9995 (n=5), the linear range is 3.4～39.2×10~(-9) mol/L, 5 curves The relative standard deviation of the slope was 2.84%, and the recovery rate was 93.93±3.1% (n=5).

Determination of N_2O in seawater and sediments. Packed column Test spectrum: