Table 2.

Extraction of microplastics based on elutriation technique.

Height	Width	Sieve Size	Optimal Conditions	Sample Amount	Saline Solution	Removal Efficiency	Reference
147 cm	15 cm	Top: 1 mm Bottom: the 35 μm mesh has the function of a sample holder, supported on a 1 mm mesh.	flux of 300 L/h of water for 15 min.	500 mL	NaI	93–98%	[69]
50 cm	5.06–10.16 cm	Top: 3 mm	385 L/h and 5.06 cm in column width for 10 min	500 mL	-	50%	[70]
186 cm	106 mm	Top: 63 and 32 μm	1.2 × 10−2 m/s and 1.9 × 10−2 m/s, for 300 s	50.5 g	-	92%	[71]