TiO2-coated Hollow Fiber Microextraction Combined with Electrothermal Vaporization-Inductively Coupled Plasma-Mass Spectrometry for Trace Elements Analysis in Environmental Water Samples

摘要: Abstract TiO2 coated hollow fiber (HF) was prepared by sol-gel method and characterized X-ray powder diffraction scanning electron microscope. The adsorption performance of the self-prepared HF for interest metal ions explored a series affecting factors including sample pH, extraction time, stirring rate desorption condition were investigated optimized. On basis this, combining micro-solid phase with electrothermal vaporization (ETV)-inductively coupled plasma mass spectrometry (ICP-MS) developed determination trace in environmental water samples. Under optimized conditions, limits detection obtained proposed 0.039, 0.021, 0.009 0.018 ng mL−1 Cr(III), Cu(II), Cd(II) Pb(II) enrichment 12.5, 11.7, 10.3 18.6, respectively. preparation reproducibility ranged from 4.5% to 6.8% (n = 9) one batch, 7.7% 9.6% 7) batch-to-batch. validated analyzing certified reference material (GSBZ50009-88 200925) also applied analysis target East Lake snow successfully. Meanwhile, stir bar comparison it demonstrated that displayed higher efficiency capacity ions.