Water pollution can be defined in many ways, one or more substances have built up in water to such an extent that they cause problems for animals or people. If you poured a cup of black ink into a river, the ink would quickly disappear into the river's much larger volume of unpolluted water. The ink would still be there within the river, but in such a coffee concentration that you simply wouldn't be ready to see it. At such low levels, the chemicals within the ink probably wouldn't present any real problem. The chemicals within the ink could very quickly have an impact on the standard of the water. This, in turn, could affect the health of all the plants, animals, and humans whose lives depend upon the river. Thus, pollution is all about quantities: what proportion of a polluting substance is released and the way big a volume of water it's released into. A small quantity of a toxic chemical may have little impact if it's spilled into the ocean from a ship. But an equivalent amount of an equivalent chemical can have a way bigger impact pumped into a lake or river, where there's less clean water to disperse it.
Short commentary: Journal of Environmental Chemistry and Toxicology
Short commentary: Journal of Environmental Chemistry and Toxicology
Research Article: Journal of Environmental Chemistry and Toxicology
Research Article: Journal of Environmental Chemistry and Toxicology
Editorial: Journal of Environmental Chemistry and Toxicology
Editorial: Journal of Environmental Chemistry and Toxicology
Posters & Accepted Abstracts: Journal of Environmental Geology
Posters & Accepted Abstracts: Journal of Environmental Geology
Posters & Accepted Abstracts: Journal of Environmental Geology
Posters & Accepted Abstracts: Journal of Environmental Geology
ScientificTracks Abstracts: Journal of Environmental Geology
ScientificTracks Abstracts: Journal of Environmental Geology
ScientificTracks Abstracts: Journal of Environmental Geology
ScientificTracks Abstracts: Journal of Environmental Geology