Table 1.

List of major fabric phase sorptive extraction (FPSE) sorbents.

Name of the SorbeSorbent Coating	Polarity of the Sorbent
Neutral Sorbents
1.    Sol–gel poly(dimethylsiloxane)	Nonpolar
2.    Sol–gel poly(dimethyldiphenylsiloxane)	Nonpolar
3.    Sol–gel methyl	Nonpolar
4.    Sol–gel C4	Nonpolar
5.    Sol–gel C8	Nonpolar
6.    Sol–gel C12	Nonpolar
7.    Sol–gel C18	Nonpolar
8.    Sol–gel Graphene	Nonpolar
9.    Sol–gel Multi Wall Carbon Nanotubes	Nonpolar
10.  Sol–gel Single Wall Carbon Nanotubes	Nonpolar
11.  Sol–gel Activated Carbon	Nonpolar
12.  Sol–gel poly(tetrahydrofuran)	Medium polar
13.  Sol–gel poly(ethylene glycol)-poly(propylene glycol)-poly(ethylene glycol)	Medium polar
14.  Sol–gel poly(propylene glycol)-poly(ethylene glycol)-poly(propylene glycol)	Medium polar
15.  Sol–gel propyl methacrylate	Medium polar
16.  Sol–gel poly(caprolactone)-poly(dimethylsiloxane)-poly(caprolactone	Medium polar
17.  Sol–gel poly(caprolactone)-poy(tetrahydrofuran)-poly(caprolactone)	Medium polar
18.  Sol–gel poly(caprolactone diol)	Medium polar
19.  Sol–gel poly(caprolactone triol)	Medium polar
20.  Sol–gel Silica	Polar
21.  Sol–gel Sucrose	Polar
22.  Sol–gel Sucralose	Polar
23.  Sol–gel Chitosan	Polar
24.  Sol–gel Carbowax 20M	Polar
25.  Sol–gel poly(ethylene glycol), 300	Polar
26.  Sol–gel poly(ethylene glycol), 10,000	Polar
Mixed Mode Sorbents
27.  Sol–gel cation exchanger, C18	Ion exchanger/nonpolar
28.  Sol–gel anion exchanger, C18	Ion exchanger/nonpolar
29.  Sol–gel Zwitterionic cation exchanger, anion exchanger, C18	Dual ion exchanger/nonpolar
Ion Exchanger Sorbents
30.  Sol–gel cation exchanger	Ion exchanger
31.  Sol–gel anion exchanger	Ion exchanger
32.  Sol–gel Zwitterionic anion and cation exchanger	Ion exchanger