Примери за nitric acid

• Samples of 10-50 g of coal were macerated in nitric acid and then cleared in potassium hydroxide.

• For instance, it is said that nitric acid consists of hydrogen, nitrogen, and oxygen.

• The segments of the discs are created by mechanical scratching, or alternatively by etching the upper electrode with nitric acid.

• This sampling method allows the determination of the nitric acid amount which is present only in the aerosol phase.

• The fractions were dissolved in hydrofluoric and nitric acid.

• Sodium content was analyzed using emission spectroscopy after hydrolysis with nitric acid.

• Beakers, pre-treated in nitric acid to remove metal contamination, were used to collect the ash.

• Both zircons and monazites were then cleaned thoroughly with dilute nitric acid, followed by ionized water and acetone rinses.

• Nitric acid is similar, but it vaporises more easily and was perhaps the basis of the cloud in the area.

• There were no studies specifically with nitric acid aerosols.

• This showed that the material was fuming nitric acid, a rocket motor propellant, and not chemical warfare agent.

• I say this because there is the acid rain problem and desulphurisation will not prevent the equally noxious nitrous oxides which produce nitric acid.

• In the atmosphere, nitrogen oxides become transformed into gaseous or liquid forms of nitric acid, adding to the acidification of lakes and rivers and the formation of acid rain.

• This test is carried out by adding concentrated nitric acid to the substance being tested, and then heating the mixture.

• Thus, the nomenclature extends to inorganic oxo acids, e.g. phosphoric acid, sulfuric acid, nitric acid and boric acid.