| Issue |
E3S Web Conf.
Volume 165, 2020
2020 2nd International Conference on Civil Architecture and Energy Science (CAES 2020)
|
|
|---|---|---|
| Article Number | 03044 | |
| Number of page(s) | 4 | |
| Section | Geology, Mapping, and Remote Sensing | |
| DOI | https://doi.org/10.1051/e3sconf/202016503044 | |
| Published online | 01 May 2020 | |
Analysis and Evaluation of 7 Indictor Polychlorinated Biphenyls (PCBs) Residues in Dried Kelp by Gas Chromatography (GC)
1 Aquatic Product Quality Inspection and Test Center (Shanghai), Ministry of Agriculture of the People’s Republic of China, East China Sea Fisheries Research Institute, Shanghai, China
2 Agricultural Products Quality and Safety Inspection Station of Linquan County, Linquan, Anhui Province, China
* Corresponding author: caiyouqiong@163.com
In this study, a special method was developed for the determination of 7 kinds of polychlorinated biphenyls (PCBs) residues in dried kelp by gas chromatography (GC) with electron capture detector (ECD). The PCBs were extracted with hexane/dichloromethane (1/1, v/v) by ultrasonic extraction. Clean-up methods were used by concentrated sulphuric acid, neutral alumina oxide solid phase extraction cartridge and silica solid phase extraction cartridge. The analytical compounds were quantified by an internal standard method. Under optimal experimental conditions, good linearity was observed in the range of 5~200ng/mL, and the correlation coefficients were 0.9993~0.9998. The limit of quantification (LOQ) for target analytical compounds ranged from 6.0 to 7.5μg/kg. At the spiked levels of 10，20，50 μg/kg，the average recoveries ranged from 81.8% to 105% with the relative standard deviations 3.05%～11.2%. The result showed that the proposed method was accurate and could be used for the determination of the PCBs in dried kelp.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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