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.

Simultaneous Determination of Alachlor, Metolachlor, Atrazine, and Simazine in Water and Soil by Isotope Dilution Gas Chromatography/Mass Spectrometry

1989 ◽  
Vol 72 (2) ◽  
pp. 349-354 ◽  
Author(s):  
Lee Q Huang
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Simultaneous Determination ◽  
Isotope Dilution ◽  
Limit Of Detection ◽  
Solid Phase ◽  
Gas Chromatography Mass Spectrometry ◽  
Selected Ion Monitoring ◽  
Chromatography Mass Spectrometry

Abstract A multiresidue method was developed for the simultaneous determination of low parts per billion (ppb) concentrations of the herbicides alachlor, metolachlor, atrazine, and simazine in water and soil using isotope dilution gas chromatography/mass spectrometry (GC/MS). Known amounts of 15N,13C-alachlor and 2H5-atrazine were added to each sample as internal standards. The samples were then prepared by a solid phase extraction with no further cleanup. A high resolution GC/low resolution MS system with data acquisition in selected ion monitoring mode was used to quantitate herbicides in the extract. The limit of detection was 0.05 ppb for water and 0.5 ppb for soil. Accuracy greater than 80% and precision better than 4% was demonstrated with spiked samples.

Simultaneous Determination of Harmful Aromatic Amine Products of Azo Dyes by Gas Chromatography–Mass Spectrometry

2020 ◽  
Vol 75 (10) ◽  
pp. 1330-1334
Author(s):  
Dotse Selali Chormey ◽  
Buse Tuğba Zaman ◽  
Esra Maltepe ◽  
Çağdaş Büyükpınar ◽  
Ayşe Evrim Bulgurcuoğlu ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Simultaneous Determination ◽  
Aromatic Amine ◽  
Azo Dyes ◽  
Gas Chromatography Mass Spectrometry ◽  
Chromatography Mass Spectrometry
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