Determination of molybdenum in environmental samples.

Determination of molybdenum in environmental samples.

Analytica chimica acta (2007-04-10)

Krystyna Pyrzynska

ABSTRACT

Determination of molybdenum in different kinds of environmental samples is often a challenging task for analysts. Its concentration is usually very low and the sample matrix may cause serious interferences during measurement. Therefore, preconcentration and separation methods should be used to solve these problems and render more sensitive, accurate and interference-free determination. Recent developments in sample treatment, such as solid phase and liquid-liquid extraction as well as coprecipitation are presented, including flow-based methodology. In addition, important extension and improvements in analytical methods for determinations of molybdenum are updated. Some examples of speciation analysis are also presented.

MATERIALS

Product Number

Brand

Product Description

577987

Sigma-Aldrich

Molybdenum, nanopowder, <100 nm particle size (TEM), 99.8% trace metals basis

510092

Sigma-Aldrich

Molybdenum, powder, 1-5 μm, ≥99.9% trace metals basis

266922

Sigma-Aldrich

Molybdenum, foil, thickness 0.1 mm, ≥99.9% trace metals basis

357227

Sigma-Aldrich

Molybdenum, foil, thickness 0.025 mm, ≥99.9% trace metals basis

266892

Sigma-Aldrich

Molybdenum, powder, <150 μm, 99.9% trace metals basis

357200

Sigma-Aldrich

Molybdenum, foil, thickness 1.0 mm, ≥99.9% trace metals basis

366986

Sigma-Aldrich

Molybdenum, powder, 10 μm, ≥99.95% trace metals basis

203823

Sigma-Aldrich

Molybdenum, powder, <150 μm, 99.99% trace metals basis

GF34073344

Molybdenum, rod, 200mm, diameter 10.0mm, centerless ground, 99.9%

GF14532308

Molybdenum, rod, 200mm, diameter 25mm, centerless ground, 99.9%

GF68662503

Molybdenum, rod, 500mm, diameter 1.5mm, centerless ground, 99.9%

GF14377901

Molybdenum, tube, 300mm, outside diameter 0.5mm, inside diameter 0.38mm, wall thickness 0.06mm, 99.9%

GF25048188

Molybdenum, rod, 100mm, diameter 8.0mm, centerless ground, 99.9%

GF34702411

Molybdenum, tube, 100mm, outside diameter 2.0mm, inside diameter 1.3mm, wall thickness 0.35mm, 99.9%

GF59947363

Molybdenum, rod, 50mm, diameter 20.0mm, centerless ground, 99.9%

GF27269635

Molybdenum, rod, 50mm, diameter 25mm, centerless ground, 99.9%

GF53846231

Molybdenum, rod, 200mm, diameter 1.25mm, centerless ground, 99.9%

GF15351735

Molybdenum, tube, 50mm, outside diameter 6.4mm, inside diameter 4.6mm, wall thickness 0.9mm, 99.9%

GF21254981

Molybdenum, rod, 100mm, diameter 25mm, centerless ground, 99.9%

GF11321457

Molybdenum, rod, 100mm, diameter 4.0mm, centerless ground, 99.9%

GF35688752

Molybdenum, wire reel, 1000m, diameter 0.05mm, annealed, 99.95%

GF38214187

Molybdenum, tube, 100mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, 99.9%

GF69235926

Molybdenum, rod, 500mm, diameter 2.0mm, centerless ground, 99.9%

GF73901392

Molybdenum, rod, 50mm, diameter 5.0mm, 99.98%

GF87307915

Molybdenum, tube, 500mm, outside diameter 1.5mm, inside diameter 0.95mm, wall thickness 0.275mm, 99.9%

GF30779208

Molybdenum, rod, 500mm, diameter 1.25mm, centerless ground, 99.9%

GF20178794

Molybdenum, rod, 100mm, diameter 6.0mm, centerless ground, 99.9%

GF56726499

Molybdenum, tube, 200mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, 99.9%

GF15289487

Molybdenum, rod, 100mm, diameter 15.0mm, centerless ground, 99.9%

GF02780951

Molybdenum, tube, 1000mm, outside diameter 1.0mm, inside diameter 0.7mm, wall thickness 0.15mm, 99.9%