Niobium(V) oxide coated on thin glass-ceramic rod as a solid phase microextraction fiber

Area of Science:

• Analytical Chemistry
• Materials Science

Background:

• Solid phase microextraction (SPME) is a widely used technique for sample preparation.
• Development of novel sorbent materials is crucial for enhancing SPME efficiency.

Purpose of the Study:

• To investigate the efficacy of niobium(V) oxide as a sorbent phase for SPME.
• To optimize the preparation and conditioning of niobium(V) oxide-coated SPME fibers.
• To evaluate the performance of these fibers for extracting volatile organic compounds.

Main Methods:

• Chemical vapor deposition was used to coat glass-ceramic rods with niobium(V) oxide (Nb(2)O(5)).
• SPME fibers were prepared and conditioned under optimized conditions.
• Headspace samples containing mixtures of alcohols and phenols were analyzed.

Main Results:

• Niobium(V) oxide proved suitable as a new SPME fiber material.
• Linear calibration graphs (r>0.995) were obtained for alcohols and phenols in the 50-1000 µg/L range.
• Detection limits were below 0.8 µg/L, with good repeatability (3-10.4%) and fiber-to-fiber reproducibility (5-15%).

Conclusions:

• Niobium(V) oxide is a viable and efficient sorbent for SPME applications.
• The developed SPME method offers high sensitivity and reliability for analyzing alcohols and phenols.
• This research introduces a novel material for advanced analytical extraction techniques.