Environmental Sciences Europe

Table 2 Recovery rate [%] of MPs in anaerobic sludge after each extraction phase for particles 0.1 < 1 mm and 1−5 mm in sludge cake

From: Oil-based extraction as an efficient method for the quantification of microplastics in environmental samples

	With pre-treatment						Without pre-treatment
Size	0.1 < 1 mm			1−5 mm			0.1 < 1 mm			1−5 mm
Extraction phase	1st	2nd	3rd	1st	2nd	3rd	1st	2nd	3rd	1st	2nd	3rd
PET_fragment	49	69	74	83	88	92	14	25	35	17	35	40
PP_fragment	69	92	92	85	93	99	59	67	73	69	71	77
PS_fragment	72	88	90	90	94	99	54	68	72	62	74	74
PE_fragment	77	88	94	83	91	97	71	79	79	69	81	84
HDPE_fragment	74	81	90	88	96	99	59	69	74	71	80	83
PVC_pellet	33	46	50	40	52	52	16	27	29	31	39	43
PA_line	71	88	94	87	98	100	64	76	84	79	89	93
PA_microbead	34	45	45	47	51	55	12	28	33	32	49	49
PP_pellet	26	45	50	54	64	69	8	29	32	46	53	55
PES_fiber	64	84	91	84	93	99	56	67	72	69	81	84

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