Table 4.

The adsorption capacity of heavy metals and organic pollutants by microplastics.

Pollutants		Adsorption particles	Adsorption capacity (μg/g)	Remarks	Ref.
Heavy metals	Pb	PE MPs; PP	/	Cr and Pb: Stronger adsorption capacity to PE; PP: Pb > Cd > Cu.	(Besson et al., 2020; Godoy et al., 2019; Turner and Holmes, 2015)
	Cd	LDPE microbeads; PE MPs; PP	10.1; <0.8
	Cr	LDPE microbeads; PE beads	1.7; 1360
	Cu	PE MPs; PP	31.2; 42.6; <0.8
	Zn, Cs	PE MPs	<0.8
Organic contaminants	PAHs	LDPE; PE, PVC	69.8–159.5	Phenanthrene: Strongest adsorption capacity to LDPE; Nonylphenols: CIP: Strongest adsorption capacity to PP; CIP: Strongest adsorption capacity to PE; levofloxacin and DIFE: Strongest adsorption capacity to PVC.	(Liu et al., 2019; Razanajatovo et al., 2018; Wang et al., 2018, Wang et al., 2020a, Wang et al., 2020b; Mato et al., 2001)
	PCBs, DDE, and NP	PP	1.6 × 10−4–16
	Pharmaceuticals	PE, PVC	46.1–1740
	Pesticides	PE	2.9–273.2
	Antibiotics	PE	61–963

PAHs: Polycyclic aromatic hydrocarbons; HDPE: High-pressure polyethylene.

PCBs: Polychlorinated biphenyls; DDE: 1,1-Bis (p-chlorophenyl) - 2,2-dichloroethylene; Pharmaceuticals: including sulfamethoxazole(SMX), propranolol (PRP), sertraline (SER), amoxicillin (AMX), ciprofloxacin (CIP); trimethoprim(TMP) and levofloxacin; Pesticides: including carbendazim(CAR), dipterex (DIP), diflubenzuron (DIF), malathion (MAL) and difenoconazole (DIFE).