Open AccessDevelopment of a Sampling and Analysis Method for 4‐Vinyl‐1‐cyclohexene in Air
Author(s) -
Kongtip Pornpimol,
Tangprakorn Bantoon,
Yoosook Witaya,
Chantanakul Suttinun
Publication year - 2008
Publication title -
journal of occupational health
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 59
ISSN - 1348-9585
DOI - 10.1539/joh.l7115
Subject(s) - cyclohexene , natural rubber , adsorption , charcoal , desorption , carbon disulfide , flame ionization detector , carbon fibers , chemistry , chromatography , materials science , analytical chemistry (journal) , gas chromatography , catalysis , organic chemistry , composite material , composite number
Development of a Sampling and Analysis Method for 4‐Vinyl‐1‐cyclohexene in Air: Pornpimol K ongtip , et al . Department of Occupational Health and Safety, Faculty of Public Health, Mahidol University, Thailand —The purpose of this research was to develop an applicable sampling and analytical method to determine airborne 4‐vinyl‐1‐cyclohexene concentrations which are usually found in the atmosphere of polybutadiene factories. A solid sorbent tube, containing two sections (100 mg in the front and 50 mg in the back) of activated coconut‐shell charcoal was chosen for sampling 4‐vinyl‐1‐cyclohexene vapor. The 4‐vinyl‐1‐cyclohexene in the charcoal samples was desorbed with carbon disulfide and analyzed by gas chromatography equipped with a flame ionization detector. The suitable air flow rate, adsorption capacity, sample storage stability, desorption efficiency and reliability of the method for sampling and analysis of 4‐vinyl‐1‐cyclohexene were evaluated. The method was applied to sampling and analysis of 4‐vinyl‐1cyclohexene in the rubber industry. The results indicated a suitable air flow rate of 0.3 to 1.5 l/min. The adsorption capacity of 4‐vinyl‐1‐cyclohexene on 100 mg of charcoal was 0.2134 mg. The 4‐vinyl‐1cyclohexene adsorbed on the charcoal was stable for 7 d at room temperature or 21 d in a refrigerated condition. The average percent desorption efficiency of 4‐vinyl‐1‐cyclohexene ranged from 90.45% to 97.04% with the loaded amount ranging from 0.412 to 8.250 µg using 1 ml carbon disulfide. The limit of detection of 4‐vinyl‐1‐cyclohexene was 0.044 ng. The average percent recoveries (n=6) of 4‐vinyl‐1cyclohexene adsorbed on charcoal ranging from 0.46 to 8.87 µg were 96.78–102.87% with relative standard deviations (RSDs) of 0.34–1.92%, respectively. The concentrations of 4‐vinyl‐1‐cyclohexene ranged from 0.011 to 0.105 mg/m 3 in the working environment of a polybutadiene factory.