chromium article 46 nonhuman 32 Animals 26 Chromium 24 controlled study 24 copper 22 zinc 22 Argentina 20 Water Pollutants, Chemical 20 priority journal 20 nickel 18 cadmium 16 lead 16 bioaccumulation 14 Metals 12 concentration (parameters) 12 trace metal 12 Environmental Monitoring 10 Seawater 10 animal tissue 10 heavy metal 10 iron 10 manganese 10 pollution effect 10 Chlorophyll 8 Copper 8 Euglena gracilis 8 Lead 8 Metals, Heavy 8