Elemental valence analysis

The valence state of elements is an important part of studying the existence form of elements and whether they can be activated. Research on the valence state of elements is relatively difficult. The reason is that some elements have more valence states and more complex components. At the same time, analytical methods also limit the study of valence states. At present, morphological analysis has become an important branch in the field of analytical science.

method organic solvent extraction method, ion exchange resin separation method and hydroxide co-precipitation method, etc., and then according to the different properties of each element, it can be measured by spectrophotometry, atomic absorption spectrometry, electrochemical analysis, gas chromatography, etc.

① Environmental monitoring: mixed fertilizers, waste, soft mud, silt, slime, coal slime, sediment, fertilizers, pesticides and wood, solid and liquid waste.
② Geological materials: marine and river sediments, soil, rocks and minerals.
③ Agricultural products: plants and leaves, wood, food, dairy products (such as milk). ④ Chemical and pharmaceutical products: fine chemical products, pharmaceutical products, explosives, catalysts, organometallic compounds, polymers, synthetic rubber, leather, fiber materials and textile products.
⑤ Petrochemical and energy: coal, graphite, coke, crude oil, fuel oil, petroleum, gasoline additives, lubricants, oil additives.
⑥ Energy saving and emission reduction: analysis of fuel, coal and oil components.
⑦ Physical properties: insulation materials, building materials, pigments, fuels, tires, fiberglass, ceramics and cement.