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Phosphotungstic acid (PTA) or
tungstophosphoric acid (TPA), is a
heteropoly acid with the
chemical formula H3PW12O40]. It
forms hydrates H3[PW12O40]·nH2O...
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Phosphotungstic acid
haematoxylin (PTAH) is a mix of
haematoxylin with
phosphotungstic acid, used in
histology for staining. It
stains some
tissue in contrasting...
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small amount of
phosphotungstic acid. In the OG-6, the OG
signifies Orange G and the '6'
denotes the
concentration of
phosphotungstic acid added; other...
- microscopy. Electron-dense
compounds of
heavy metals are
typically used.
Phosphotungstic acid is a
common negative stain for viruses, nerves, polysaccharides...
- in the
Lowry protein ****ay and EPTA,
ethanolic phosphotungstic acid.
Phosphomolybdic acid
Phosphotungstic acid
Silicotungstic acid Greenwood, N. N.; Earnshaw...
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modification consisted of the
addition of
lithium sulfate and
bromine to the
phosphotungstic-phosphomolybdic reagent. The
reagent does not
measure only phenols...
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metatungstate produces a wide
variety of
heteropoly acids, such as
phosphotungstic acid H3PW12O40.
Tungsten trioxide can form
intercalation compounds...
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solution such as
ammonium molybdate,
uranyl acetate (or formate), or
phosphotungstic acid.[citation needed] This
mixture is
applied to an EM grid, pre-coated...
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oxidation of
peptide bonds, with Folin–Ciocalteu
reagent (a
mixture of
phosphotungstic acid and
phosphomolybdic acid in the Folin–Ciocalteu reaction). The...
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depending on the
heteroatom (X) and the
addenda atoms (M). For the 12–
phosphotungstic acid,
Keggin determined the bond
length between the
heteroatom and...
