|
KMID : 0385520110240020119
|
|
Analytical Science & Technology
2011 Volume.24 No. 2 p.119 ~ p.126
|
|
|
Determination of benzene, toluene, ethylbenzene and o-xylene in bottled waters by headspace solid-phase microextraction and gas chromatography/mass spectrometry
|
|
Kim Jong-Hun
|
|
|
Abstract
|
|
|
|
The amount of benzene, toluene, ethylbenzene, and o-xylene (BTEX) in 30 kinds of bottled waters purchased from market and 9 kinds of tap waters from home were determined using headspace solid phase microextraction (HS-SPME). The sample was stirred at 1200 RPM G for 4 min using a magnetic bar with 100 ㎛ PDMS as adsorbent for BTEX. Then it was desorbed from the fiber for 1 min at room temperature. Quantitation was achieved using standard calibration method. The limit of detection was determined as benzene 0.39 (±0.04) ng/㎖, toluene 0.08 (±0.04) ng/㎖, ethylbenzene 0.04 (±0.01) ng/㎖, and o-xylene 0.05 (±0.02) ng/㎖. Benzene and o-xylene were not detected in any samples, but toluene was detected in 11 samples, and ethylbenzene was detected just in 3 samples among 30 investigated bottled waters. The concentration range of investigated materials for toluene and o-xylene were 0.24 (±0.09)~2.95 (±0.08) ng/㎖, 0.08 (±0.06)~0.93 (±0.10) ng/㎖, respectively.
|
|
|
KEYWORD
|
|
|
BTEX, bottled water, tap water, GC/MS, SPME
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|