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海水和沉積物中N_2O的測定填充柱
海水和沉積物中N_2O的測定填充柱 詳細(xì)信息：

名稱：填充柱
規(guī)格：2m*1/8
型號：PQ
應(yīng)用：海水中溶解氧化亞氮的測定 頂空平衡-氣相色譜法


氧化亞氮(N_2O)是一種氮氧化物,在全球氮循環(huán)中扮演著重要角色;N_2O是溫室氣體之一,也是臭氧層的耗竭物之一。隨著工農(nóng)業(yè)生產(chǎn)和社會經(jīng)濟(jì)的發(fā)展,大氣中N_2O的含量以每年約0.2%的速率增加。海洋是N_2O的重要源,研究海洋中N_2O的時空分布,有利于估算海洋釋放的N_2O量。因此,發(fā)展靈敏的海水和沉積物中N_2O的分析方法成為關(guān)鍵所在。

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司建立了海水中N_2O的常溫吹掃捕集-氣相色譜分析法 考察了不同吸附材料對N_2O的捕集能力,選擇常溫下捕集效率的80～100目5A|°分子篩為吸附材料。對柱溫、吸附溫度、脫附溫度、吹掃時間、吹掃氣流速等實驗條件進(jìn)行了優(yōu)化。檢測限達(dá)2.8×10~(-10) mol/L,標(biāo)準(zhǔn)工作曲線的線性相關(guān)系數(shù)達(dá)0.9995(n=5),線性范圍為3.4～39.2×10~(-9) mol/L,5條曲線斜率的相對標(biāo)準(zhǔn)偏差為2.84%,回收率為93.93±3.1%(n=5)。

海水和沉積物中N_2O的測定填充柱  測試譜圖：



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: