Abstract
Microprobe two-step laser desorption/laser ionization mass spectrometry (μL2MS) is used as a new analytical technique for the detection of polychlorinated biphenyls (PCBs). Three standard Aroclor solutions (Aroclor 1232, 1242, and 1262) and three samples of activated carbon spiked with Aroclor 1242 are examined. All the PCBs present in the Aroclor solutions are clearly identified using μL2MS. The distribution of the peaks follows the relative natural abundances of the carbon and chlorine isotopes. μL2MS analyses of the spiked particles of activated carbon reveal the presence of PCBs and an abundance of polycyclic aromatic hydrocarbons. The detection limit for PCBs on solid surfaces is determined to be between 1 and 10 ppm. Because the spatial resolution of the μL2MS instrument varies between 10 and 40 microns, PCB information at the sub-particle scale can be obtained.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
