The high temperature titration of biogenic silica

Autor:	Kitack Lee, William M. Sackett
Rok vydání:	1998
Předmět:	Calcite Inorganic chemistry Mineralogy Aquatic Science engineering.material Biogenic silica Oceanography Wollastonite Silicate Amorphous solid chemistry.chemical_compound chemistry Reagent engineering Titration Pyrolysis Geology
Zdroj:	Deep Sea Research Part I: Oceanographic Research Papers. 45:1015-1028
ISSN:	0967-0637
DOI:	10.1016/s0967-0637(97)00108-8
Popis:	A new method has been developed for measuring biogenic silica (amorphous) in marine sediments. It is based on the Hogbom–Urey reaction CaCO 3 + SiO 2 ( biogenic silica )→ CaSiO 3 ( wollastonite )+ CO 2 . The reaction is carried out in evacuated sealed glass tubes with added excess reagent grade calcite at 500°C for 3 d. The product CO 2 is measured in a calibrated manometer. The dependence of the reaction on time, temperature, product CO 2 pressure, and other factors is examined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a358c0a10bcfbc2ef10a5662e0c9b06d https://doi.org/10.1016/s0967-0637(97)00108-8 Zobrazit plný text záznamu Full Text from ScienceDirect