Abstract
The extracted fish samples (w/w) using pressurized liquid extraction (PLE) were cleaned up by applying different adsorbent materials such as: combination of acidic/ basic silica and alumina, florisil, and silica gel either alone or in combination with another sort of sorbent. Different solvents such as hexane (H), dichloromethane (DCM), with different compositions were used to elute the PCBs target compounds from the spiked fish samples. Overall the mean percentage recoveries for all PCBs congeners using PLE were ranging from 78.6% to 98.7%; from 79.4% to 91.8%; from 65.8% to 104.5% and from 82.4% to 100.9% for cases A, B, C, D and E, respectively. However, the overall mean percentage recoveries for the 13C-PCBs surrogate including: 101, 138, 153, 180 and 209 were ranging from 88.2% to 97.6%; from 79.4% to 90.2%, from 88.3% to 96.4%, from 79.8% to 90.4% and from 83.9% to 95.9%, for cases A, B, C, D and E, respectively. The limits of detection of the proposed method were varied from 0.01 to 0.28 ng/g (w/w) for different PCBs congeners. The proposed method has linear dynamic range from 21.5 ng/g to 109 ng/g. This method was applied to fish samples for the determination of the target PCBs components.
Highlights
Persistent Organic Pollutants (POPs) consist of heterogeneous groups including, polychlorinated biphenyls (PCBs), organo-chlorinated pesticides (OCPs), and other organic pollutants [1]
Sample treatment consists of two steps: one step is to destroy the lipids by using SX3-300 Bio-beads (GPC) and the second step is the clean-up step that is performed by using different adsorbents
When using different solvent extraction mixture for the fish sample, calculating the recoveries of the targeted compounds with respect to the solvent mixture used for the extraction, there was no significant differrences found between the results obtained with the pressurized liquid extraction (PLE) method
Summary
Persistent Organic Pollutants (POPs) consist of heterogeneous groups including, polychlorinated biphenyls (PCBs), organo-chlorinated pesticides (OCPs), and other organic pollutants [1]. POPs are characterized by high chemical, biological stability and lipophilicity, which makes POPs persist in the environment and bio-accumulate within the food chain [2]. POPs are toxic chemicals that have the capability to stay stable in the environment over long period of time. In the year 2001 Stockholm Convention, the polychlorinated biphenyls (PCBs) organochlorinated pesticides (OCPs) were given special attention and were included in the so called “dirty dozen” [3]. Sample treatment consists of two steps: one step is to destroy the lipids by using SX3-300 Bio-beads (GPC) and the second step is the clean-up step that is performed by using different adsorbents
Sign-in/Register to view highlights & summary 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.
