ASTM D859-16(2021)e1. Standard Test Method for Silica in Water.
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Date
2021Corporate Author
ASTM International
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1.1 This test method covers the determination of silica in water and waste water; however, the analyst should recognize that the precision and accuracy statements for reagent water solutions may not apply to waters of different matrices.
1.2 This test method is a colorimetric method that determines molybdate-reactive silica. It is applicable to most waters, but some waters may require filtration and dilution to remove interferences from color and turbidity. This test method is useful for concentrations as low as 20 μg/L.
1.3 This test method covers the photometric determination of molybdate-reactive silica in water. Due to the complexity of silica chemistry, the form of silica measured is defined by the analytical method as molybdate-reactive silica. Those forms of silica that are molybdate-reactive include dissolved simple silicates, monomeric silica and silicic acid, and an undetermined fraction of polymeric silica.
1.4 The useful range of this test method is from 20 to 1000 μg/L .....
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https://www.astm.org/d0859-16r21e01.htmlPublisher
ASTM InternationalWest Conshohocken, PA
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ASTM;D859-16R21E01Document Language
enSustainable Development Goals (SDG)
14.aEssential Ocean Variables (EOV)
NutrientsMaturity Level
MatureCitation
ASTM International (2021) ASTM D859-16(2021)e1. Standard Test Method for Silica in Water. West Conshohocken, PA, ASTM International. Available: https://www.astm.org/d0859-16r21e01.htmlCollections
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