Determination of polynuclear aromatic hydrocarbons in water by flotation enrichment and HPLC.
A method of concentration and determination of several polynuclear aromatic hydrocarbons (PAHs) in water by flotation enrichment and HPLC is described. Triton X-100 was used as the foaming agent to extract the PAHs from water by passage of nitrogen. Reversed-phase liquid chromatography with coupled fluorescence detection was applied to separate and determine these PAHs. Various factors which may affect the recovery of PAHs from water, including pH, temperature and the concentration of Triton X-100 added, are discussed. This simplified method of concentrating PAHs from water has been applied to determine PAHs in water from Lake Erie. The method has practical value for the determination of PAHs in large volumes of water.
Bo-Xing
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Great Lakes Laboratory, State University College at Buffalo, 1300 Elmwood Avenue, Buffalo, NY 14222, U.S.A.
Yu-Zhi
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