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品牌:1941

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土壤中甲基叔丁基醚的顶空固相微萃取气相色谱质谱测定
土壤中甲基叔丁基醚的顶空固相微萃取气相色谱质谱测定 详细信息：

名称：毛细管柱
固定相：6 %腈丙基苯基 94 %二甲基聚硅氧烷，
规格：60m*0.25mm*1.4um
型号：HH-624 UI
应用： 土壤和沉积物中甲基叔丁基醚的测定分析


甲基叔丁基醚(Methyl Tert-Butyl Ether,MTBE)是一种由甲醇和异丁烯合成的无色透明有机醚类化合物。针对土壤和沉积物中的MTBE,对比筛选采样分析方法,择优选择了吹扫捕集/气相色谱-质谱法。

浩瀚色谱（山东）应用技术开发有限公司提出了测定水和土壤中甲基叔丁基醚（MTBE）的吹扫捕集-气相色谱-质谱法。水和土壤样品按相关标准采集后于25℃保存，吹扫捕集参数选定如下：①吹扫时间为11 min；②脱附时间和温度分别为190℃，2 min。经气相色谱分离后采用电子轰击离子源和选择离子扫描模式进行质谱分析。在水和土壤样品中 MTBE 的质量浓度在一定范围内与其峰面积呈线性关系，MTBE在上述2种样品中的检出限（3S／N）分别为0．10μg·L－1，0．26μg·kg－1。按标准加入法进行回收试验，测得回收率在87．6％～103％之间，测定值的相对标准偏差（n＝5）在2．3％～7．2％之间。

土壤中甲基叔丁基醚的顶空固相微萃取气相色谱质谱测定  测试谱图：





Determination of methyl tert-butyl ether in soil by headspace solid-phase microextraction gas chromatography-mass spectrometry
Headspace solid-phase microextraction gas chromatography-mass spectrometry determination of methyl tert-butyl ether in soil Details:

Name: capillary column
Stationary phase: 6% nitrile propylphenyl 94% dimethylpolysiloxane,
Specifications: 60m*0.25mm*1.4um
Model: HH-624 UI
Application: Determination and analysis of methyl tert-butyl ether in soil and sediments


Methyl Tert-Butyl Ether (MTBE) is a colorless and transparent organic ether compound synthesized from methanol and isobutylene. Aiming at MTBE in soil and sediments, the sampling and analysis methods were compared and selected, and the purge and trap/gas chromatography-mass spectrometry method was selected as the best method.

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. proposed a purge and trap-gas chromatography-mass spectrometry method for the determination of methyl tert-butyl ether (MTBE) in water and soil. The water and soil samples were collected according to relevant standards and stored at 25 °C. The purge and trap parameters were selected as follows: (1) the purge time was 11 min; (2) the desorption time and temperature were 190 °C and 2 min, respectively. After separation by gas chromatography, mass spectrometry was performed using electron bombardment ion source and selected ion scanning mode. The mass concentration of MTBE in water and soil samples has a linear relationship with its peak area within a certain range. The detection limits (3S/N) of MTBE in the above two samples are 0.10 μg·L-1 and 0.26 μg, respectively. ·kg-1. The recovery test was carried out according to the standard addition method, and the measured recovery rate was between 87.6% and 103%, and the relative standard deviation (n=5) of the measured value was between 2.3% and 7.2%.

Headspace solid-phase microextraction gas chromatography-mass spectrometry determination of methyl tert-butyl ether in soil Test spectrum: