Metal concentration (?g?L-1)	Limit of detection (LOD)	Limit of quantification (LOQ)
Al	0.0716	0.0716
Ti	0.0251	0.0251
V	0.0040	0.0040
Cr	0.0101	0.0199
Mn	0.0044	0.0044
Fe	0.5423	0.8225
Fe	0.0468	0.0468
Ni	0.0468	0.0468
Cu	0.2301	0.2953
Zn	0.0001	0.0001
As	0.0394	0.0867
Se	0.0150	0.0150
Rb	0.3887	0.4476
Sr	0.0040	0.0040
Y	0.0021	0.0021
Zr	0.0021	0.0021
Nb	0.0002	0.0002
Mo	0.0384	0.0864
Ag	0.0006	0.0006
Cd	0.0185	0.0185
Sn	0.0016	0.0016
Ba	0.0049	0.0049
La	0.0002	0.0002
Ce	0.0002	0.0002
W	0.0004	0.0004
Au	0.0005	0.0005
Hg	0.0128	0.0128
Hg	0.0122	0.0122
Pb	0.0125	0.0125