Adequacy of sampling trains and analytical procedures used for fluoride

Autor:	Rodney Midgett, William James Mitchell
Rok vydání:	1976
Předmět:	Chromatography business.industry Sampling (statistics) Sulfuric acid complex mixtures Pollution law.invention Steam distillation chemistry.chemical_compound chemistry law Analytical procedures Perchloric acid Process engineering business Phosphoric acid Distillation Fluoride
Zdroj:	Atmospheric Environment (1967). 10:865-872
ISSN:	0004-6981
DOI:	10.1016/0004-6981(76)90141-4
Popis:	Liquid nitrogen-cooled cold-traps were used to establish the collection efficiency for fluorides of two different source sampling trains at primary aluminum reduction plants and wet-process phosphoric acid plants. It was found that the glass frit filter support commonly used in stationary source sampling trains retained fluoride during sampling; therefore, the filter should not be placed before the impingers when sampling for fluoride. Also described are the results of a collaborative test on two standard distillation procedures for fluorides: sulfuric acid distillation and steam distillation from perchloric acid. The results show that the predominant source of imprecision in both methods is the distillation step itself.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::70d220b180a6c414dc5754f782bf8b4f https://doi.org/10.1016/0004-6981(76)90141-4 Zobrazit plný text záznamu