Surface-enhanced IR absorption spectroscopy in attenuated-total reflection（ATR-SEIRAS） configuration was extended for the first time to a cadmium electrode with the adsorption of pyridine as the model system. The SE...Surface-enhanced IR absorption spectroscopy in attenuated-total reflection（ATR-SEIRAS） configuration was extended for the first time to a cadmium electrode with the adsorption of pyridine as the model system. The SEIRAS active Cd film electrode was prepared by electrodeposition of Cd mulitlayers onto a underlying Au nanofilm on Si in 0.01 mol/L CdSO 4 +0.1 mol/L KClO 4. The morphology of the as-prepared Cd film exhibits an island structure. In the potential range of -1.2 to -0.8 V（vs. SCE）, only in-plane vibrations belonging to the A1 symmetry were detected whereas those to the B1 symmetry virtually were not, suggesting that pyridine coordinates vertically or at a little angle to the Cd electrode surface via its nitrogen end without edge-tilted rotation of its ring plane. The Py adsorption configuration is closed to that found on a Au electrode, but different from that on a Ni or Pt electrode, which may be assigned to different structures of valence electron shells for the substrate metals.展开更多
This paper presents the research work in detecting monomer residues in synthetic fiber fabrics according to the limitcontrol of EU 2002/371/EC and European ko-Tex standa 100 on VOCs.Ultrasound-assisted extraction an...This paper presents the research work in detecting monomer residues in synthetic fiber fabrics according to the limitcontrol of EU 2002/371/EC and European ko-Tex standa 100 on VOCs.Ultrasound-assisted extraction and 40℃ water-bath was adopted for samples treatment before the headspace solid-phase microextraction(HS-SPME)were made.Extraction were then directly analyzed by gas chromatography/mass spectrometry(GC/MS).The paper also gives application range for safe assessment of textile fabrics.The limits of detection for 5 target compounds were below 0.001mg/kg with average recovery between 97.1% ～103.1%.展开更多
文摘Surface-enhanced IR absorption spectroscopy in attenuated-total reflection（ATR-SEIRAS） configuration was extended for the first time to a cadmium electrode with the adsorption of pyridine as the model system. The SEIRAS active Cd film electrode was prepared by electrodeposition of Cd mulitlayers onto a underlying Au nanofilm on Si in 0.01 mol/L CdSO 4 +0.1 mol/L KClO 4. The morphology of the as-prepared Cd film exhibits an island structure. In the potential range of -1.2 to -0.8 V（vs. SCE）, only in-plane vibrations belonging to the A1 symmetry were detected whereas those to the B1 symmetry virtually were not, suggesting that pyridine coordinates vertically or at a little angle to the Cd electrode surface via its nitrogen end without edge-tilted rotation of its ring plane. The Py adsorption configuration is closed to that found on a Au electrode, but different from that on a Ni or Pt electrode, which may be assigned to different structures of valence electron shells for the substrate metals.
文摘This paper presents the research work in detecting monomer residues in synthetic fiber fabrics according to the limitcontrol of EU 2002/371/EC and European ko-Tex standa 100 on VOCs.Ultrasound-assisted extraction and 40℃ water-bath was adopted for samples treatment before the headspace solid-phase microextraction(HS-SPME)were made.Extraction were then directly analyzed by gas chromatography/mass spectrometry(GC/MS).The paper also gives application range for safe assessment of textile fabrics.The limits of detection for 5 target compounds were below 0.001mg/kg with average recovery between 97.1% ～103.1%.
