A Chelating Resin of EDTA-Type Modified Cross-Linking Polystyrene to Preconcentrate Trace Metals for Seawater Detection

Table 5

Detection of trace metals of seawaters (Samples taken in Dec. 2021).

Ions	National class I sea water/µg/L	Jiaozhou Bay (Hongdao)/µg/L		Tangdao Bay (Huangdao)/µg/L		Aoshan Bay (Jimo)/µg/L
		A/D	PS	A/D	PS	A/D	PS
Cu	5	1.806	1.891	1.411	1.505	0.920	0.889
Zn	20	17.074	16.341	10.212	9.923	8.897	8.718
Pb	1	1.380	1.495	0.833	0.904	0.121	0.129
Cd	1	0.252	0.213	0.124	0.103	0.084	0.073