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Quantitative determination of furocoumarins in samples of Carapia by capillary gas chromatography
(Vieweg, 1999-07-01)
The occurrence of furocoumarins in the Moraceae has already been demonstrated. We present here the results concerning the chemical composition and quantification of furocoumarins from carapia (Dorstenia species, Moraceae) ...
Comparison of the quantification of caffeine in human plasma by gas chromatography and ELISA
(Associação Brasileira de Divulgação Científica (ABRADIC), 2001-06-01)
In the present study we evaluated the precision of the ELISA method to quantify caffeine in human plasma and compared the results with those obtained by gas chromatography. A total of 58 samples were analyzed by gas ...
Residues of organochlorine pesticides and PCBs in some Brazilian municipal solid waste compost
(2007-08-01)
Persistent organic pollutants (POPs), organochlorine pesticides and polychlorinated biphenyls (PCBs), listed as per the Stockholm Convention (α -HCH, β -HCH, γ -HCH, p,p′-DDT, o,p′-DDT, p,p′-DDD, p,p′-DDE, aldrin, endrin, ...
Determination of the sodium monofluoroacetate in serum by gas chromatography
(Vieweg, 2001-09-01)
Sodium monofluoroacetate (NAFAc) has been widely used for vertebrate pest control, such as rabbits in Australia. However NAFAc is extremely toxic to all vertebrates and its use is restricted. Although this compound is ...
Quantification of sex pheromone from Anocentor nitens by gas chromatography-mass spectrometry-selected ion monitoring
(2004-02-27)
Two highly sensitive and selective methods based on gas chromatography coupled to mass spectrometry (GC-MS) in the selected ion monitoring (SIM) mode have been developed for the quantification of 2,6-dichlorophenol (2,6-DCP), ...
Application of low-pressure gas chromatography-ion-trap mass spectrometry to the analysis of the essential oil of Turnera diffusa (Ward.) Urb.
(Elsevier B.V., 2004-02-20)
Turnera diffusa Willd. var. afrodisiaca (Ward) Urb. (syn. T. aphrodisiaca) belongs to the family of Turneraceae and is an aromatic plant growing wild in the subtropical regions of America and Africa. It is widely used in ...
Multiresidue determination of pesticides in honey samples by gas chromatography-mass spectrometry and application in environmental contamination
(Elsevier B.V., 2007-01-01)
A simple and fast multiresidue method has been developed to determine 48 pesticides within the major groups of pesticides (organohalogen, organophosphorous, pyrethroids and organonitrogen) in representative samples of ...
OFF-LINE SUPERCRITICAL-FLUID EXTRACTION - HIGH-RESOLUTION GAS-CHROMATOGRAPHY APPLIED TO THE STUDY OF MORACEAE SPECIES
(Wiley-Blackwell, 1993-09-01)
Supercritical fluid extraction with CO2, Performed in a home-made system, of rhizomes of Dorstenia bryoniifolia Mart. ex Miq. (Moraceae) and of bark roots of Brosimum gaudichaudii Trecul (Moraceae) afforded crude extracts ...