1000 ppm Atomic Absorption STANDARDS

1000ppm ATOMIC ABSORPTION standards

This page provides a list of metals analysed by atomic absorption spectroscopy, and gives info on how to prepare a 1000 ppm AA standard solution from the pure element or from one of its salt. Use deionized water and store all solutions in stoppered polythene bottles.
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Related links : ppm dilutions Interferences in AA analysis Types of interferences AA Instrument Hg cold vapor and As hydride generation

Preparation of 1000pm Stock AA Standards
Aluminium

Dissolve 1.000 g of Aluminium metal in 25ml. of hydrochloric acid (S.G. 1.18) and a few drops of nitric acid (S.G. 1.42) Dilute to 1 litre in a volumetric flask with deionised water.

Antimony

Dissolve 1.000g antimony in 10ml. conc. hydrochloric acid, a few drops of conc. nitric acid, and 10g of tartaric acid. Dilute to 1 litre with deionised water.

Arsenic

Dissolve 1.000g of arsenic powder in 50ml. conc. nitric acid. Dilute to 1 litre with deionised water or

Dissolve 1.3200g arsenous oxide (As₂O₃) , dried to 110°C, in 50ml. of conc. hydrochloric acid. Dilute to 1 litre with deionised water.

Barium

Dissolve 1.4380g.of barium carbonate (BaCO₃) in 20ml. 1M hydrochloric acid. Dilute to 1litre in a volumetric flask with deionised water.

Beryllium

Dissolve 19.639g. of beryllium sulphate (BeSO₄) in 250 deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Bismuth

Dissolve 1.000g. of bismuth metal in 50ml. conc. nitric acid Dilute to 1litre in a volumetric flask with deionised water.

Dissolve 1.1148g. of bismuth trioxide (Bi₂O₃) in the minimum quantity of comc. hydrochloric acid. Dilute to 1litre in a volumetric flask with deionised water.

Boron

Dissolve 5.1744g. of boric acid (H₃BO₃) in 500ml. of deionised water. Dilute to 1litre in a volumetric flask with deionised water..

Cadmium

Dissolve 1.000g. of cadmium metal in 20ml. of 5M.hydrochloric acid and 2 drops of conc. nitric acid. Dilute to 1litre with deionised water.

Dissolve 2.0360g. of cadmium chloride in 250 ml deionised water.Dilute to 1 litre in a volumetric flask.

Dissolve 2.1032g. of cadmium nitrate in 250ml.of deionised water. Diluteto1 litre in a volumetric flask.

Caesium

Dissolve 1.2670g. of caesium chloride (CsCl) in 100ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Calcium

Dissolve 2.4973g. of calcium carbonate (CaCO₃) in 25ml. of 1M hydrochloric acid. This should be added dropwise to avoid losses during the vigorous effervescence. Dilute to 1litre in a volumetric flask with deionised water.

Dissolve 2.7693g. of calcium chloride (CaCl₂) in 100ml. deionised water. Dilute to 1litre in a volumetric flask with deionised water.

Chromium

Dissolve 7.6960g. of chromium nitrate (Cr(NO3)₃.9H2O) in 250ml.of deionised water. Dilute with more deionised water in 1 litre vol. Flask.

Cobalt

Dissolve 1.000g. of cobalt metal in 50ml. of 5M hydrochloric acid. Dilute to 1litre in a volumetric flask with deionised water.or

Dissolve 4.9379g. of cobalt nitrate (Co(NO3)₂.6H2O in 250 ml. deionised water. Dilute to 1litre in a volumetric flask with deionised water.

Dissolve 4.0380g. of cobalt (11) chloride (CoCl₂.6H2O) in 200ml. deionised water. Dilute to 1litre in a volumetric flask with deionised water.

Copper

Dissolve 1.000g. of copper metal in 50ml. of 5M nitric acid. Dilute to 1 litre in a volumetric flask with deionised water. or

Dissolve 3.7980g. of (Cu(NO3)₂.3H2O in 250ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Gold

Dissolve 1.000g. of gold metal in 15ml. of conc. hydrochloric acid and 5ml. of conc. nitric acid. Dilute to 1 litre in a volumetric flask with deionised water.or

Dissolve 1.8110g. of ammonium chloroaurate (NH₄AuCl₄) in 100ml.of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Iron

Dissolve 1.000g. of iron wire or granules in 20ml. of 5M hydrochloric acid Dilute to 1 litre in a volumetric flask with deionised water.or

Dissolve 4.8400g. of iron (111) chloride (FeCl₃.6H2O) in 200ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised.water

Lanthanum

Dissolve 1.1782g. of lanthanum oxide (La₂O₃) in 20ml. of 5M hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water.

Lead

Dissolve 1.000g.of lead metal in 50ml. of 2M nitric acid. Dilute to 1 litre in a volumetric flask with deionised water.

Dissolve1.5980g. of lead nitrate ( Pb(NO₃)₂ ) in 100ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Magnesium

Dissolve 1.000g. of magnesium metal in 50ml. of 5M hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water.or

Dissolve 3.9160g. of magnesium chloride (MgCl₂.6H2O) in 200ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Manganese

Dissolve 1.000g. of manganese metal in50ml. of conc. hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water.

Dissolve 3.6077g. of manganesse chloride (MnCl₂.4H20) in 50ml. conc. hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water.

Mercury

Dissolve 1.000g. of mercury metal in20ml. of 5M nitric acid. Dilute to 1 litre in a volumetric flask with deionised water.or

Dissolve 1.3520g. of mercury (11) chloride (HgCl₂) in 250ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water. or

Dissolve 1 .0800g. of mercury (11) oxide (HgO) in 20ml. of 5M hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water.

Molybdenum

Dissolve 1.000g. of molybdenum powder in 10 ml. of conc. hydrochloric acid and 10ml. of deionised water. Add 1ml. of conc.nitric acid. Use a magnetic stirrer to completely dissolve the molybdenum. Dilute to 1 litre in a volumetric flask with deionised water. or

Dissolve 1.8403g. of ammonium molybdate (NH₄)₆MO₇O₂₂.4H2O in 500ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water. or

Dissolve 1.5000g. of molybdenum trioxide (MoO₃) in 25ml. conc. hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water.

Nickel

Dissolve 1.000g. of nickel in 20ml. of conc. nitric acid. Dilute to 1 litre in a volumetric flask with deionised water.or

Dissolve 4.9530g. of nickel nitrate (Ni(NO₃)₂.6H2O) in 1 litre volumetric flask with deionised water.

Potassium

Dissolve1 1.9070 g. of dry potassium chloride in 250 ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Silica

Dissolve about 7.6 g. of sodium metasilicate (Na₂SiO₃.5H2O in deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Silver

Dissolve 1.5750 of silver nitrate in 200ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Sodium

Dissolve 2.5420g. of sodium chloride (NaCl) in 200ml. of deionised water. Dilute with deionised water to 1 litre in a volumetric flask.

Strontium

Dissolve 2.4150g. of strontium nitrate (Sr(NO₃)₂ in 200ml. of deionised water. Dilute to 1 litre in a volumetric flask with water.

Tin

Dissolve 1.000g. of tin metal in 200ml. of conc. hydrochloric acid and 5ml. of conc.nitric acid. Dilute to 1 litre in a volumetric flask with deionised water. or

Dissolve 2.9540 of tin (1V) chloride pentachloride (SnCl₄.5H2O) in 500ml. deionised water.If precipitate forms, redissolve by adding 6M hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water

Uranium

Dissolve 21.100g. of uranyl nitrate (UO₂(NO₃)₂6H₂O) in 250ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.or

Dissolve 14.329g. of uranyl chloride (UO₂Cl₂) in 250ml. of deionised water. Dilute to 1 litre in a volumetric flask with deionised water.

Vanadium

Dissolve 1.000g. of vanadium metal in 25ml.conc.nitric acid. Dilute to 1 litre.

Dissolve 2.2960g. of ammonium metavanadate (NH₄VO₃) in 20ml. of 100 volume hydrogen peroxide. Dilute to 1 litre in a volumetric flask with deionised water.

Zinc

Dissolve 1.000g. of zinc metal in 30ml. of 5M hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water.or

Dissolve 1.2450g. of zinc oxide (ZnO) in 5ml of deionised water followed by 25ml. of 5M hydrochloric acid. Dilute to 1 litre in a volumetric flask with deionised water

Zirconium

Dissolve 1.000g. of zirconium metal in 25ml. of hydrofluoric acid (40% w / v) in a P.T.F.E. beaker. Dilute to 1 litre in a polpropylene volumetric flask with deionised water, or

Dissolve 3.7174g. of dry zirconium nitrate in 1 litre deionised water

Source: Pye Unicam "Atomic Absorption Data Book" 1979.

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