A novel method for the determination of some pesticides in vegetable oils based on dissociation extraction followed by gas chromatography-mass spectrometry

2016 ◽  
pp. 1-9 ◽  
Author(s):  
Mikhail F. Zayats ◽  
Sergey M. Leschev ◽  
Marina A. Zayats
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Vegetable Oils ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry ◽  
Novel Method

scholarly journals Determination of Phytosterols in vegetable oils by GC-MS method

2020 ◽  
Vol 3 (4) ◽  
pp. 36-42
Author(s):  
Hien Dang Thu ◽  
Ngoc Anh Mai Thi ◽  
Hong Ngoc Nguyen Thi ◽  
◽  
◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Vegetable Oils ◽  
Limit Of Detection ◽  
Alkaline Media ◽  
Gas Chromatography Mass Spectrometry ◽  
Limit Of Quantification ◽  
Chromatography Mass Spectrometry ◽  
Trimethylsilyl Ethers

In this study, a method for determination of six phytosterols by gas chromatography-mass spectrometry with derivatization in vegetable oils was validated. The samples were hydrolyzed in an alkaline media at 70°C for 60 min. Then, the samples were performed liquid-liquid extraction with toluene. The phytosterols are derivatized to trimethylsilyl ethers and then analyzed by gas chromatography-mass spectrometry. The limit of detection and limit of quantification was 5 and 15 mg/kg, respectively. Recoveries of six phytosterols were between 93.5% and 101%.

Simultaneous determination of tocopherols and tocotrienols in vegetable oils by GC-MS

2016 ◽  
Vol 8 (40) ◽  
pp. 7341-7346 ◽  
Author(s):  
Rui Zhang ◽  
Weijian Shen ◽  
Xueyuan Wei ◽  
Feifang Zhang ◽  
Chongyu Shen ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Simultaneous Determination ◽  
Vegetable Oils ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry

A simple and rapid gas chromatography-mass spectrometry (GC-MS) method was developed and validated for the simultaneous determination of α-, β-, γ- and δ-tocopherols and α-, β-, γ- and δ-tocotrienols in vegetable oils.

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