Nitrogen, oxygen-codoped hierarchically porous biochar for simultaneous enrichment and ultrasensitive determination of o-xylene and its hydroxyl metabolites in human urine by solid phase microextraction-gas chromatography-mass spectrometry
التفاصيل البيبلوغرافية
العنوان:
Nitrogen, oxygen-codoped hierarchically porous biochar for simultaneous enrichment and ultrasensitive determination of o-xylene and its hydroxyl metabolites in human urine by solid phase microextraction-gas chromatography-mass spectrometry