Analysis and Evaluation of 7 Indictor Polychlorinated Biphenyls (PCBs) Residues in Dried Kelp by Gas Chromatography (GC)Liangliang Tian, Yongfu Shi, Dongmei Huang, Huijuan Yu, Shuai Wang and Youqiong CaiE3S Web Conf., 165 (2020) 03044DOI: https://doi.org/10.1051/e3sconf/202016503044