Comparison between GC-MS-SIM and GC-ECD for the determination of residues of organochlorine and organophosphorus pesticides in Brazilian citrus essential oils

Determination of Phthalates in Polymer Materials – Comparison of GC/MS and GC/ECD Methods

The paper presents two methods for determination of phthalates in polymer materials. The methods compared were gas chromatography combined with the mass spectrometry (GC/MS) and gas chromatography with electron capture detector (GC/ECD). The GC/ECD technique was chosen for this comparison, because the ECD detector was one of few capable of detecting phthalates. In both cases the same procedure ...

Extraction and determination of the main components of the essential oil of Ducrosia anethifolia by gc and gc/ms

Ducrosia anethifolia is used to improve the smell of foods and drinks. It is also used as fodder for sheep and camel. It is used to treat catarrh, headache, and backache in folk medicine. The herb is also reported to relax the mind and body and induce a peaceful sleep. The aim of this study was to extract the essential oil from the herb and determine its main components by GC and GC/MS and to s...

Extraction and determination of the main components of the essential oil of Ducrosia anethifolia by gc and gc/ms

Ducrosia anethifolia is used to improve the smell of foods and drinks. It is also used as fodder for sheep and camel. It is used to treat catarrh, headache, and backache in folk medicine. The herb is also reported to relax the mind and body and induce a peaceful sleep. The aim of this study was to extract the essential oil from the herb and determine its main components by GC and GC/MS and to s...

Determination of Multiclass Pesticides in Dry Herbs Using GC-ECD

Determination of endocrine-disrupting pesticides and polychlorinated biphenyls in human serum by GC-ECD and GC-MS-MS and evaluation of contributions to the uncertainty of the results.

The chemicals endosulfan-alpha, endosulfan-beta, endosulfan sulfate, endosulfan ether, endosulfan lactone, PCB-21, PCB-48, PCB-61, and PCB-136 have been determined in 100 serum samples from women living in agricultural areas of Almería (Spain). The study includes a surgically treated breast cancer patient and a matching group of women with no sign of estrogenic-dependent disease. The determinat...