Occurrence and partitioning of p-phenylenediamines and their quinones in seawater and sediment from East China Sea - Ningning Zhu; Mingzhi Liu; Zhongyong Yan; Hanghai Zhou; Zhou Wu; Zeyu Xiao; Rijin Jiang; Qinglin Mu; Yanhong Li; Chunfang Zhang (Marine Environmental Research, 2026)