Recovery of naphthalene during evaporative concentration. [Tenax; XAD-2; POR-Q, XE-340]

Journal Article · Wed Oct 01 00:00:00 EDT 1980 · Anal. Chem.; (United States)

DOI:https://doi.org/10.1021/ac50062a054· OSTI ID:7063196

Higgins, C E; Guerin, M R

The analysis of trace organics usually requires concentrating organic extracts to small volumes prior to instrumental analysis. The use of a concentration apparatus employing a nitrogen blanket and reduced pressure is desirable because the inert atmosphere and low temperature help to ensure stable composition. Unfortunately, diaromatic compounds such as the naphthalenes and biphenyls are frequently almost completely lost during the concentration step. Even under carefully controlled conditions only 26 +- 11% of the naphthalene is recovered. By placing a sorbent either in or downstream of the evaporation concentration flask, recovery of diaromatic compounds can be improved significantly. In this investigation, the following sorbents, Tenax, XAD-2, POR-Q, and XE-340 were tested. Recoveries with and without the use of sorbents, effects of solute concentration, purge time after solvent removal, and type of solvent used are reported here.

• Research Organization: Oak Ridge National Lab., TN
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 7063196
• Journal Information: Anal. Chem.; (United States), Vol. 52:12
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
NAPHTHALENE
ADSORPTION
ADSORBENTS
BENZENE
COMPARATIVE EVALUATIONS
CYCLOHEXANE
ETHERS
HEXANE
METHANOL
SOLVENTS
ALCOHOLS
ALKANES
AROMATICS
CONDENSED AROMATICS
CYCLOALKANES
HYDROCARBONS
HYDROXY COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
SORPTION
400105* - Separation Procedures