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  2. Simultaneously extracted metals and acid-volatile sulfide

    en.wikipedia.org/wiki/Simultaneously_extracted...

    A number of heavy metals, such as cadmium and lead, are toxic to various forms of life, particularly when dissolved in water as metal ions. [1] Toxic heavy metals are often present in surface water as a result of natural processes, such as the weathering of metal-containing rocks, or due to human activity, such as mining and smelting. [2]

  3. Toxic heavy metal - Wikipedia

    en.wikipedia.org/wiki/Toxic_heavy_metal

    The toxic effects of arsenic, mercury and lead were known to the ancients but methodical studies of the overall toxicity of heavy metals appear to date from only 1868. In that year, Wanklyn and Chapman speculated on the adverse effects of the heavy metals "arsenic, lead, copper, zinc, iron and manganese" in drinking water. They noted an ...

  4. Water quality - Wikipedia

    en.wikipedia.org/wiki/Water_quality

    The comparative simplicity of elemental analysis has produced a large amount of sample data and water quality criteria for elements sometimes identified as heavy metals. Water analysis for heavy metals must consider soil particles suspended in the water sample. These suspended soil particles may contain measurable amounts of metal.

  5. Environmental chemistry - Wikipedia

    en.wikipedia.org/wiki/Environmental_chemistry

    Environmental chemistry is used by the Environment Agency in England, Natural Resources Wales, the United States Environmental Protection Agency, the Association of Public Analysts, and other environmental agencies and research bodies around the world to detect and identify the nature and source of pollutants. These can include:

  6. Heavy metals - Wikipedia

    en.wikipedia.org/wiki/Heavy_metals

    Heavy metals is a controversial and ambiguous term [2] for metallic elements with relatively high densities, atomic weights, or atomic numbers.The criteria used, and whether metalloids are included, vary depending on the author and context and has been argued should not be used.

  7. Phytoextraction process - Wikipedia

    en.wikipedia.org/wiki/Phytoextraction_process

    The heavy metals that plants extract are toxic to the plants as well, and the plants used for phytoextraction are known hyperaccumulators that sequester extremely large amounts of heavy metals in their tissues. Phytoextraction can also be performed by plants that uptake lower levels of pollutants, but due to their high growth rate and biomass ...

  8. National Institute of Water and Atmospheric Research

    en.wikipedia.org/wiki/National_Institute_of...

    An ecotoxicology laboratory for assessing the effects of contaminants – such as heavy metals, pesticides, and wastes – on aquatic organisms. Aquaculture research facilities at Bream Bay in Northland and at Mahanga Bay, Wellington. An upper atmosphere research laboratory located at Lauder, Central Otago, New Zealand.

  9. Thermal pollution - Wikipedia

    en.wikipedia.org/wiki/Thermal_pollution

    Increased water temperature can also increase the solubility and kinetics of metals, which can increase the uptake of heavy metals by aquatic organisms. This can lead to toxic outcomes for these species, as well as build up of heavy metals in higher trophic levels in the food chain, increasing human exposures via dietary ingestion. [21]