“…Noticeably, SPE is regarded as a cost-effective tool due to its simplicity, high preconcentration, and low consumption of organic toxic solvents ( Dibaei et al, 2016 ). Recently, there has been a growing interest in magnetic solid phase extraction (MSPE) due to its favorable properties including the small dosage of the adsorbent, simplicity, easy separation, and saving time ( Gong et al, 2017 ; Li et al, 2014 ). As a reliable method, MSPE has been successfully used to preconcentrate environmental pollutants such as phthalate esters, polycyclic aromatic hydrocarbons, lignin, and heavy metal ions ( Wu et al, 2017 ; Zhou et al, 2017 ; Wu et al, 2019 ; Yuan et al, 2020 ).…”