- 【Updated on May 12, 2025】 Integration of CiNii Dissertations and CiNii Books into CiNii Research
- Trial version of CiNii Research Knowledge Graph Search feature is available on CiNii Labs
- 【Updated on June 30, 2025】Suspension and deletion of data provided by Nikkei BP
- Regarding the recording of “Research Data” and “Evidence Data”
Determination of chloride, nitrite, nitrate and sulfate ions in water extract of coal by ion chromatography.
-
- YANASHIMA Hisako
- The Institute of Physical and Chemical Research
Bibliographic Information
- Other Title
-
- 石炭の水抽出溶液中の塩化物イオン,亜硝酸イオン,硝酸イオン及び硫酸イオンのイオンクロマトグラフィーによる定量
- セキタン ノ ミズ チュウシュツ ヨウエキチュウ ノ エンカブツ イオン アシ
Search this article
Description
A method for the determination of free anions in coal was developed. The qualitative analysis was performed by ion chromatography for the water extracts from two kinds of coal which were commercially available as standard samples for elemental analysis. Chloride, nitrite, nitrate and sulfate ions could be detected as main anions. To extract these anions completely, 100200 mg of each kind of coal was weighed in a quartz flask, 20 ml of deionized water was added and this mixture was refluxed with a quartz condenser for 60 min. After the coal was separated by filtration, the extract was diluted with 8 mM Na2CO3-NaHCO3 solution to 50.000 g and injected into the ion chromatograph. The precision of the results was good for chloride and sulfate ions, but not satisfactory for nitrite and nitrate ions. To determine the total amount of anions, the coals combusted gaseous products were absorbed in deionized water, the residue was stirred with deionized water and heated on a water bath. Each solution was injected into the ion chromatograph and the total amount of anions was obtained by adding both results. It was found that the amounts of free anions were 010% of those of the total anions. These values were useful as an indicator of the quality of coal.
Journal
-
- BUNSEKI KAGAKU
-
BUNSEKI KAGAKU 37 (4), T55-T60, 1988
The Japan Society for Analytical Chemistry
- Tweet
Details 詳細情報について
-
- CRID
- 1390282679331945984
-
- NII Article ID
- 110002909798
-
- NII Book ID
- AN00222633
-
- NDL BIB ID
- 3183226
-
- ISSN
- 05251931
-
- Text Lang
- ja
-
- Data Source
-
- JaLC
- NDL Search
- Crossref
- NDL Digital Collections (NII-ELS)
- CiNii Articles
- OpenAIRE
-
- Abstract License Flag
- Disallowed