空氣中痕量三甲胺的頂空氣相色譜毛細(xì)管柱，室內(nèi)空氣，焦?fàn)t煤氣，煉廠氣，天然氣，變壓器油，多氯聯(lián)苯，植物油，增塑劑，塑化劑，消毒劑，氨水，氨氣，變壓器油多氯聯(lián)苯，增塑劑

空氣中痕量三甲胺的頂空氣相色譜毛細(xì)管柱
空氣中痕量三甲胺的頂空氣相色譜毛細(xì)管柱 詳細(xì)信息：

名稱：HH-Tamine60甲胺專用毛細(xì)管柱
規(guī)格：60m*0.32mm
*高使用溫度：280°C
編號：20220109001

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司建立了頂空氣相色譜-質(zhì)譜法測定空氣中三甲胺(TMA)含量的方法.以0.02mol/L鹽酸為吸收液采集空氣中的三甲胺,吸收液用氫氧化鈉游離出三甲胺,在80℃下平衡40min后用氣相色譜-質(zhì)譜聯(lián)用儀進(jìn)行檢測.當(dāng)采氣流量為0.5 L/min時,三甲胺的采集效率〉99%;方法在0.05～2μg范圍內(nèi)線性良好,相關(guān)系數(shù)〉0.999;做了3個水平的加標(biāo)回收率和精密度實(shí)驗,相對標(biāo)準(zhǔn)偏差在2.4%～5.6%,加標(biāo)回收率在94%～102%;當(dāng)采樣體積為30L時,方法的檢出限為0.3μg/m.所建方法靈敏度高于目前的主要分析方法,適用于環(huán)境空氣中低濃度三甲胺的監(jiān)測.



空氣中痕量三甲胺的頂空氣相色譜毛細(xì)管柱  測試譜圖：



Headspace Gas Chromatographic Capillary Column for Trace Trimethylamine in Air

Headspace gas chromatographic capillary column details of trace trimethylamine in air:



Name: HH-Tamine60 methylamine special capillary column

Specification: 60m * 0.32mm

*High service temperature: 280 ° C

No.: 20220109001



Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has established a headspace gas chromatography-mass spectrometry method to determine the content of trimethylamine (TMA) in the air. Use 0.02mol/L hydrochloric acid as the absorption liquid to collect trimethylamine in the air. The absorption liquid is free of trimethylamine with sodium hydroxide. After being balanced at 80 ℃ for 40 minutes, use a gas chromatography-mass spectrometer to detect it. When the gas flow is 0.5 L/min, the collection efficiency of trimethylamine is>99%; Method: 0.05~2 μ The linearity is good within the range of g, and the correlation coefficient is ＞ 0.999; Three levels of spiked recoveries and precision experiments were conducted. The relative standard deviation was 2.4% ～ 5.6%, and the spiked recoveries were 94% ～ 102%; When the sampling volume is 30L, the detection limit of the method is 0.3 μ g/m. The sensitivity of the method is higher than that of the current main analytical methods, and it is suitable for monitoring low concentrations of trimethylamine in ambient air



Headspace gas chromatography capillary column test spectrum of trace trimethylamine in air: