A method for the determination of 16 polycyclic aromatic hydrocarbons in water has been developed. First, we made a solid-phase extraction column. After this, the parameters affecting the efficacy of the experimental method were optimized, including appropriate selection of a solid-phase extraction column and cleanup conditions on columns. The separation was achieved by gas chromatography and detection with triple quadrupole tandem mass spectrometry. The method showed satisfactory linearity (R2  > 0.999) over the range assayed (0.01-1 μg/mL), and limits of quantification ranging from 0.0011 to 0.0199 μg/L. The recoveries ranged from 83 to 113%. The relative standard deviation is in the range 0.86-3.1%. The results indicated that this method had high selectivity and precision that was suitable for the simultaneous determination of 16 polycyclic aromatic hydrocarbons in water.

Determination of polycyclic aromatic hydrocarbons in water samples by gas chromatography coupled to triple quadrupole tandem mass spectrometry using macroporous resin solid-phase extraction.

In this paper, the source and distribution of PAHs in water is systematacially reviewed. The techniques of soxhlet extraction, liquid-liquid extraction, solid phase extraction, solid phase microextraction and turbidity extraction, liquid phase microextraction and their application in the pretreatment of polycyclic aromatic hydrocarbons are compared in detail. Some comments on the future developments of sample pretreatment techniques are also presented.

Progress on sample pretreatment techniques for polycyclic aromatic hydrocarbons in water system

Methods of the off-line and on-line solid phase extraction (SPE) combined with liquid chromatographic (LC) analysis were compared in respects of separation effect, breakthrough volume, precision and detection limits for polycyclic aromatic hydrocarbons (PAHs). Results showed that the on-line mode is slightly preferred than the off-line one except for the early eluting compounds, naphthalene and biphenyl, due to the overshadowing of the matrix. Measurement of PAHs was performed for surface water with both off-line and on-line systems. Comparison results have shown that four polycyclic aromatic hydrocarbons: naphthalene, fluorene, phenanthrene and anthracene were detected in the surface water and both the techniques fit linear regression mode for fluorene, phenanthrene and anthracene at trace levels. With removal of the matrix interference, such as humic acids and fulvic acids, the precision of on-line system for naphthalene could be improved.

Comparison of Off-Line and On-Line Solid Phase Extraction and High Performance Liquid Chromatographic Analysis of Polycyclic Aromatic Hydrocarbons (PAHs) in Water

A method based on spiking performance reference compounds (PRCs) into low density polyethylene (LDPE) to measure freely dissolved Hydrophobic organic compounds (HOCs) in overlying water and sediment was introduced. Equilibration time of PRCs migrate to LDPE was determined and freely dissolved concentrations of three PAHs (acenaphthene, phenanthrene, pyren) in overlying water and sediment pore water were sampled and measured by the method. The results indicated that the concentrations of PRCs in LDPE were about constant after 64h. The measurement and subsequent calculation showed that freely dissolved concentrations of PAHs in the overlying water were 0.045µg/L, 0.087µg/L and 0.01175µg/L for acenaphthene, phenanthrene and pyren, respectively, and their concenreations in the sediment pore water were 0.112µg/L, 0.080µg/L and 0.0174µg/L, respectively.

Measurement of freely dissolved PAH concentrations in overlying water and sediment using low density polyethylene

[The enrichment of polycyclic aromatic hydrocarbons in water samples by solid-phase extraction].

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[The enrichment of polycyclic aromatic hydrocarbons in water samples by solid-phase extraction].