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・ Ashkali and Balkan Egyptians
・ Ashkalun
・ Ashkam Kuh
・ Ashkam Shur
・ Ashkan
・ Ashkan Dejagah
・ Ashkan Kooshanejad
・ Ashkan Namdari
・ Ashkan Pouya
・ Ashinaga (organization)
・ Ashinaga eophthalma
・ Ashinaga longimana
・ Ashinagatenaga
・ Ashinas
・ Ashineh
Ashing
・ Ashingdon
・ Ashington
・ Ashington (disambiguation)
・ Ashington A.F.C.
・ Ashington End
・ Ashington Group
・ Ashington High School
・ Ashington Piggeries Ltd v Christopher Hill Ltd
・ Ashington railway station
・ Ashington Range
・ Ashington, Dorset
・ Ashington, West Sussex
・ Ashinia Miller
・ Ashino Chishōgun Prefectural Natural Park


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Ashing : ウィキペディア英語版
Ashing

Ashing is a test to deduce the amount of ash forming material present in a petroleum product so as to decide its use in certain applications. Ash-forming materials are considered to be undesirable impurities or contaminants.
The specimen is placed in a suitable vessel, evaporating dish or crucible and ignited. It is allowed to burn until only ash and carbon remains. The carbonaceous residue is reduced to ash by heating in a Muffle furnace at about 775oC, cooled and weighed.
Ashing is also performed prior to chemical analysis by inductively coupled plasma emission spectrometry.
==See also==

*Ash (analytical chemistry)
*Inductively coupled plasma emission spectrometry
*Atomic absorption spectroscopy


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Ashing」の詳細全文を読む



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