Environmental Sciences Europe

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

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	69	74	88	59	89	99	61	77	78	60	81	89
PP_fragment	86	98	100	96	100	100	81	91	91	88	96	99
PS_fragment	81	97	100	43	65	100	79	93	96	74	95	99
PE_fragment	84	91	93	97	98	99	73	87	89	89	98	98
HDPE_fragment	93	96	98	96	99	99	74	82	84	91	97	97
PVC_pellet	70	79	83	28	53	63	41	51	52	31	51	60
PA_line	80	93	93	93	100	100	65	72	87	62	81	89
PA_microbead	25	45	51	21	34	40	19	50	60	26	43	56
PP_pellet	33	60	80	50	85	95	27	51	54	44	58	64
PES_fiber	68	72	88	46	76	97	70	80	88	63	87	96

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