Examples of 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.