FOR the analysis of the nitrate content of sea water, and for certain tests on alkaloids, it is necessary to have sulphuric acid free from all but the most minute amounts of nitric acid.

Programa de Pós-Graduação em Engenharia Florestal (PPGEF), Departamento de Engenharia e Tecnologia Florestal, Universidade Federal do Paraná, 632 Pref. Lothario Meissner Avenue, Curitiba 80210-170, ...

Dopamine hydrochloride (DA) and phosphate buffered saline (PBS) were purchased from Sigma-Aldrich. Hydrochloric acid and sodium hydroxide were purchased from Daejung (South Korea). All chemicals were ...

Erupting volcanoes can be a significant natural source of sulfur dioxide emissions. When sulfur dioxide combines with water and air, it forms sulfuric acid, which is the main component of acid rain.

Biofuel production has ignited the price of one raw material that is crucial to US industry sulphuric acid. Each time an ... including liquid sulphur dioxide, sodium hydrosulphite and sulphur ...