Monitoring the quality of the marine environment.
As part of the monitoring program from Instituto Hidrográfico, since 1981 sediment and water samples have been collected from four different estuarine areas located along the continental coast of Portugal. The concentrations of different parameters were measured in the water and sediment samples. After normalization, the concentrations of chromium, mercury, lead and zinc in the sediments from the different areas were compared.
Palma
C
C
Ministério da Defesa Nacional, Marinha-Instituto Hidrográfico, Portugal.
Valença
M
M
Pestana da Silva
P
P
Biscaya
J L
JL
D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry; D019216:Metals, Heavy / Q000032:analysis*; D011174:Portugal; D014874:Water Pollutants, Chemical / Q000032:analysis*
D019216:Metals, Heavy; D014874:Water Pollutants, Chemical