Caramelized carbonaceous shell-coated γ-Fe2O3 as a magnetic solid-phase extraction sorbent for LC-MS/MS analysis of triphenylmethane dyes. - Li, Nianlu; Li, Ruohan; Song, Yinshuang; Ma, Long; Gao, Cuiling; Li, Lili; Cheng, Shi-Bo; Zhang, Xiaoli; Chen, Jing; Zhan, Jinhua (Microchimica Acta, 2020)