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Ana Causanilles, Vera Nordmann, Dennis Vughs, Erik Emke, Olivier de Hon, Félix Hernández, Pim de Voogt
The present study investigates the applicability of the chemical analysis of wastewater to assess the use of doping substances by the general population and amateur athletes. To this end, an analytical methodology that can identify and quantify a list of 15 substances from the groups of anabolic steroids, weight loss products, and masking agents in wastewater has been developed. The method uses solid phase extraction to increase the detection sensitivity of the target analytes, expected to be present at very low concentrations (ng L-1 range), and decrease possible matrix interferences...
February 2018: Analytical and Bioanalytical Chemistry
Mahmoud A ElSohly, Waseem Gul, Candice Tolbert, Kareem M ElSohly, Timothy P Murphy, Bharathi Avula, Amar G Chittiboyina, Mei Wang, Ikhlas A Khan, Min Yang, Dean Guo, Wei-Dong Zhang, Juan Su
In an earlier study, we developed two sensitive and reliable procedures for gas chromatography-mass spectrometry (GC-MS) and liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis of methylhexaneamine (MHA) in P. graveolens plant materials and volatile oils. None of the analyzed plant materials or oils showed any detectable levels of MHA which was further substantiated by high resolution liquid chromatography-quantum time of flight-mass spectrometry (LC-QTOF-MS) analysis with a limit of detection of 10 ppb...
July 2015: Drug Testing and Analysis
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