Minimizing of blank values of the miniature silica gel column

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Chemosphere; (United States)

OSTI ID:5336290

Picer, N; Picer, M; Mikac, N

Several methods involving silica gel separations of polychlorinated biphenyls from chlorinated insecticides are already described in literature. The authors intention was to find a system of solvent and silica gel of the lowest blank values. The first step was to find a solvent mixture which will keep the homogenity of a silica gel column, PCBs elution was performed with pentane, while the chlorinated insecticides eluated with diethylether, acetone, methanol, and benzene. Separation of pesticides from polychlorinated biphenyls found in a synthetic mixture was also examined. It was found that all solvent systems used gave similar results of separation. However, only if benzene is used as eluant, the silica gel column can be used for four successive separations after the ''on column'' regeneration. In order to obtain the lowest blank values silica gel was cleaned with several solvents. The eluates after the silica gel separation were also cleaned up by means of deactivation alumina and concentrated sulfuric acid.

• Research Organization: Center for Marine Research, Zagreb, Yugoslavia
• OSTI ID: 5336290
• Journal Information: Chemosphere; (United States), Vol. 11:9
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORINATED AROMATIC HYDROCARBONS
LIQUID COLUMN CHROMATOGRAPHY
INSECTICIDES
CALIBRATION STANDARDS
GAS CHROMATOGRAPHY
SEAWATER
SILICA GEL
WATER POLLUTION
ADSORBENTS
AROMATICS
CHROMATOGRAPHY
HALOGENATED AROMATIC HYDROCARBONS
HYDROGEN COMPOUNDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
PESTICIDES
POLLUTION
SEPARATION PROCESSES
STANDARDS
WATER
520200* - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
400102 - Chemical & Spectral Procedures