Abstract
A method to measure dissolved polychlorinated biphenyls (PCBs) in natural waters on 30 min time frames using negligible depletion non-equilibrium solid-phase microextraction (SPME) was developed with detection limits ranging from 0.6 to 5.2 ng L−1. SPME fibres made from optical cable were inserted into a glass tube and attached to the shaft of a motor that revolved at 130 rpm to move the SPME fibres through the sampled water at a constant rate. To test for matrix interferences, measurements were made in three solutions with the same known dissolved PCB concentration but different matrices. Dissolved PCB measurements made in the presence of 8 mg L−1 of DOC and 200 mg L−1 of suspended solids were not significantly different from measurements made in deionized water, demonstrating that neither matrix interfered with SPME measurements of dissolved PCBs. PCB concentrations measured by XAD-2 resin extraction were greater than SPME measurements, suggesting that XAD measurements included DOC-associated PCBs.
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 callMore From: International Journal of Environmental Analytical Chemistry
Disclaimer: 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.
