Determination of Per- and Polyfluoroalkyl Substances in Craft Villages and Industrial Environments of Vietnam

Table 2

Concentrations of PFASs (ng/L) in wastewater of selected metal-plating factories and textile-dyeing factories in Vietnam.

Name	PFHxA	PFOA	PFNA	PFDA	PFUdA	PFDoA	PFHxS	PFOS	Σ8 PFCs	ΣPFCAs	ΣPFSAs
Metal-plating factories
W98	NQ^a	2.19	NQ	1.24	NQ	NQ	NQ	18.9	22.3	3.43	18.9
BG01	0.68	0.58	NQ	0.53	NQ	NQ	1.26	5.41	8.46	1.79	6.67
BG02	0.92	0.5	NQ	0.86	NQ	NQ	0.88	8.64	11.8	2.28	9.52
BG03	0.70	0.96	NQ	0.59	NQ	NQ	NQ	17.7	19.9	2.25	17.7
BG04	0.45	1.03	NQ	NQ	NQ	NQ	NQ	0.73	2.21	1.48	0.73
W3	NQ	0.37	NQ	NQ	NQ	NQ	NQ	NQ	0.37	0.37	0
W97	NQ	0.72	NQ	1.78	NQ	NQ	NQ	NQ	2.5	2.5	0
W96	NQ	NQ	NQ	NQ	NQ	NQ	NQ	NQ	0	0	0
Textile-dyeing factories
W120	1.14	3.53	NQ	NQ	NQ	NQ	NQ	NQ	4.67	4.67	0
W127	2.09	6.69	NQ	NQ	NQ	NQ	NQ	NQ	8.78	8.78	0
W129	1.07	0.37	NQ	NQ	NQ	NQ	NQ	NQ	1.44	1.44	0
W131	43.6	16.0	NQ	NQ	NQ	NQ	NQ	NQ	59.5	59.5	0
W132	30.1	0.52	NQ	NQ	NQ	NQ	NQ	NQ	30.6	30.6	0
W134	NQ	1.47	NQ	NQ	NQ	NQ	NQ	NQ	1.47	1.47	0
W137	3.18	0.55	NQ	NQ	NQ	NQ	NQ	NQ	3.73	3.73	0
W138	NQ	1.75	NQ	NQ	NQ	NQ	NQ	NQ	1.75	1.75	0
MQL	0.26	0.35	0.41	0.36	0.49	0.29	0.31	0.19

^aNot quantified (concentration lower than MQL and treated as 0 in Σ8 PFCs, ΣPFCAs, and ΣPFSAs).