Fig. 1
Mass spectral data and representative peaks. Chemical structure of analytes and IS (a), mass spectral data of nicotine and cotinine (b). c Mass spectral data for the Internal Standards
Fig. 1 | BMC Neuroscience
Mass spectral data and representative peaks. Chemical structure of analytes and IS (a), mass spectral data of nicotine and cotinine (b). c Mass spectral data for the Internal Standards