Fluorometric determination of nonylphenol in water samples enriched with zirconium doped titanium dioxide nanotubes solid phase extraction

This paper developed a fluorometric method for the sensitive determination of nonylphenol in water samples by preconcentration with zirconium doped titanium dioxide nanotubes solid phase extraction. The parameters on extraction that would influence the enrichment performance such as the kind and volume of eluent, sample pH, sample flow rate, and sample volume were optimized in detail. Under the optimal conditions, the proposed method provided an excellent linear range of 1–150 μg/L and good LOD of 0.076 μg/L. The relative standard deviation (RSD, n = 6) was 2.8%. Proposed method was also used for the analysis of real water samples and the spiked recoveries were satisfied in the range of 98.7–103%.