@Article{Sykutera2014, journal="Archiwum Medycyny Sądowej i Kryminologii/Archives of Forensic Medicine and Criminology", issn="0324-8267", year="2014", title="Determination of cocaine and benzoylecgonine in nails by liquid chromatography-electrospray ionization-tandem mass spectrometry", abstract="Nails and hair are a biological matrix which can be analyzed to confirm the use of a xenobiotic even several months after intake. Results of nail analysis can be used, for example, as evidence in civil and criminal law cases in which a history of drug use can influence the court’s decision. The paper presents results of analysis of a nail sample taken from a man who was suspected of trafficking cocaine. The suspect pleaded guilty to the possession of the drug for his own use because, as he claimed, he was addicted to cocaine. A nail sample was taken. Detection and quantification were carried out using liquid chromatography-mass spectrometry (LC-ESI-MS). The concentration of cocaine in nails was found to be 47 ng/mg, and benzoylecgonine – 14 ng/mg.", author="Sykutera, Marzena and Piotrowski, Przemysław and Bloch-Bogusławska, Elżbieta", pages="165--174", doi="10.5114/amsik.2014.48880", url="http://dx.doi.org/10.5114/amsik.2014.48880" }