HUANG Xiang-jin,WEI Shou-lian,XIE Chun-sheng,HUANG Shen-wei,ZHANG Qing-zhen.Determination of 8 Kinds of Polychlorinated Biphenyls in Fish by Magnetic Solid-phase Extraction/Gas Chromatography[J].Journal of Instrumental Analysis,2025,44(07):1331-1337.
HUANG Xiang-jin,WEI Shou-lian,XIE Chun-sheng,HUANG Shen-wei,ZHANG Qing-zhen.Determination of 8 Kinds of Polychlorinated Biphenyls in Fish by Magnetic Solid-phase Extraction/Gas Chromatography[J].Journal of Instrumental Analysis,2025,44(07):1331-1337. DOI: 10.12452/j.fxcsxb.241030500.
Determination of 8 Kinds of Polychlorinated Biphenyls in Fish by Magnetic Solid-phase Extraction/Gas Chromatography
Magnetic solid-phase extraction coupled with gas chromatography was developed for the sensitive determination of 8 kinds of polychlorinated biphenyls(PCBs) by using magnetic porous carbon@
β
-cyclodextrin/epichlorohydrin copolymer(MPC@
β
-CDEP) c
omposites as magnetic solid-phase extraction agent. Effects of the amount of adsorbent,extraction time,type of desorption solvent,and desorption time on the extraction performance of MPC@
β
-CDEP were investigated. Under the optimized conditions,the 8 kinds of PCBs showed a good linearity in the concentration range of 1-500 μg/L. The correlation coefficients(
r
2
) were greater than 0.995. The limits of detection and quantification were 0.022-0.030 µg/kg and 0.072-0.10 μg/kg,respectively. The method was applied to determine PCBs in grass carp and channa argus samples. The recoveries were 86.1%-106% and relative standard deviations(RSDs) were less than 8.0%. The developed method has the advantages of simple pretreatment,short extraction time,wide linear range,high sensitivity,good accuracy and precision,and can be applied to the efficient and rapid detection of multiple PCBs in real samples.
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