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On-line solid-phase extraction with ultra performance liquid chromatography and tandem mass spectrometry for the detection of nicotine, cotinine and trans-3'-hydroxycotinine in urine to strengthen human biomonitoring and smoking cessation studies.
the concentration of nicotine, cotinine and trans-3’-hydroxycotinine in the urine of 53 volunteers (smokers and non-smokers) recruited via an internal call at the Scientific Institute of Public Health. ...