High-resolution observation per 1.5 h revealed prominent time-dependent daily contamination variations of p-phenylenediamine (PPD) antioxidants and their quinone derivatives PPDQs... nork Zifang Peng, Shijiao Hou, Qingyun He, Fangcheng Su, Lishun Ren, Congcong Pei, Dan Yin, Yanhao Zhang, Yanjie Huang, Shusheng Zhang, Zongwei Cai

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