Table 1.

Chemical characteristics of Baltimore Harbor (MD), Palos Verdes (CA), and Hudson River (MA) sediments

Parameters	Baltimore Harbor	Hudson River	Palos Verdes
Total N (%)	0.500	0.075	0.155
Water pH	7.7	7.1	8.0
Sulfate (p.p.m.)	141	11	123
Phosphate (p.p.m.)	40.0	10.0	39.5
Nitrate (p.p.m.)	1.7	1.6	1.6
TOC (%)	6.795	2.115	1.60
Inorganic carbon (%)	0.615	≤0.15	1.16
Fe (p.p.b.)	438.990	84.325	193.600
Mn (p.p.b.)	20.814	40.448	3.463
Zn (p.p.b.)	227.450	4.213	31.846
Cu (p.p.b)	47.725	1.830	8.861
Pb (p.p.b.)	101.360	13.967	12.330
Ni (p.p.b.)	5.547	0.231	1.852
Cd (p.p.b.)	1.155	0.076	1.947
Cr (p.p.b.)	0.241	0.028	0.207