Time-resolved fluorometry in detection of ultratrace polycyclic aromatic hydrocarbons in lake waters by liquid chromatography
For determination of polycyclic aromatic hydrocarbons in natural lake waters at ultratrace levels, a time-resolved fluorescence measurement system was developed. By replacing the Xe lamp of a conventional fluorometer with a N/sub 2/ laser-pumped dye laser as an excitation source, the authors could improve the detection capability for polycyclic aromatic hydrocarbons by 1 to 2 orders of magnitude. The measurement system was used as a detector for high-performance liquid chromatography. A detection limit of 180 fg was achieved for benzo(a)pyrene. The measurement precision was 3.9%. The instrument was applied to measure polycyclic aromatic hydrocarbons in the water of Lake Mashu. After allowing for extraction efficiency, the authors obtained analytical results of 0.009 ng/L, 0.007 ng/L, and 0.014 ng/L for benzo(k)fluoranthene, benzo(a)pyrene, and benzo(ghi)perylene, respectively. 9 figures, 7 tables.
- Research Organization:
- National Inst. for Environmental Studies, Yatabe, Japan
- OSTI ID:
- 6923143
- Journal Information:
- Anal. Chem.; (United States), Journal Name: Anal. Chem.; (United States) Vol. 55:14; ISSN ANCHA
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
AROMATICS
ASIA
BENZOPYRENE
CHEMICAL ANALYSIS
CHROMATOGRAPHY
CONDENSED AROMATICS
DATA
DYE LASERS
ELECTROMAGNETIC RADIATION
EMISSION SPECTROSCOPY
EXPERIMENTAL DATA
FLUORESCENCE SPECTROSCOPY
FLUORINATED AROMATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
HYDROCARBONS
HYDROGEN COMPOUNDS
INFORMATION
JAPAN
LAKES
LASER RADIATION
LASERS
LIQUID COLUMN CHROMATOGRAPHY
LIQUID LASERS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
POLYCYCLIC AROMATIC HYDROCARBONS
QUANTITATIVE CHEMICAL ANALYSIS
RADIATIONS
SENSITIVITY
SEPARATION PROCESSES
SPECTROSCOPY
SURFACE WATERS
TRACE AMOUNTS
WATER