نتایج جستجو برای: column
تعداد نتایج: 74154 فیلتر نتایج به سال:
Journal:
:iranian journal of chemistry and chemical engineering (ijcce)
2007
ravanbakhsh shirdam
abolfazl farahani
farzad khajavi
parvin baghai
the aim of this research is to develop a silica gel and alumina column chromatography for separation of polycyclic aromatic hydrocarbons (pahs) and polychlorinated biphenyls (pcbs) into two groups. this is achieved by optimizing the cut-off volume of eluting solvent and weight ratio of silica gel and alumina. in this process mixture of pahs and pcbs divide in two groups and simultaneously other...
Journal:
:PMLA/Publications of the Modern Language Association of America
1984
Journal:
:Bulletin of the New Zealand Society for Earthquake Engineering
1985
Journal:
:Maandblad Voor Accountancy en Bedrijfseconomie
1993
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