Solid-Phase microextraction with Whatman 1PS paper and direct room-temperature solid-matrix luminescence analysis

Area of Science:

• Analytical Chemistry
• Environmental Science

Background:

• Accurate detection of trace organic compounds in water is crucial for environmental monitoring.
• Traditional methods often require complex sample preparation and can be time-consuming.

Purpose of the Study:

• To develop a novel, sensitive, and efficient method for detecting polar and nonpolar compounds in aqueous solutions.
• To combine solid-phase microextraction with solid-matrix luminescence for enhanced analytical performance.

Main Methods:

• Utilized Whatman 1PS paper for selective solid-phase microextraction of nonpolar compounds from water.
• Determined distribution constants to assess the affinity of compounds like benzo(a)pyrene for the 1PS paper.
• Employed solid-matrix fluorescence and phosphorescence detection after drying the extracted 1PS paper.

Main Results:

• Demonstrated the successful combination of solid-phase microextraction and solid-matrix luminescence for sub-nanogram level detection.
• Quantified distribution constants, revealing a strong affinity of phenanthrene and benzo(a)pyrene for the 1PS paper.
• Achieved sensitive detection of benzo(a)pyrene at 0.02 ng/mL in water, with the capability to detect at least three adsorbed compounds simultaneously.

Conclusions:

• Solid-matrix luminescence coupled with solid-phase microextraction offers a simple, rapid, and highly sensitive approach for analyzing trace organic pollutants.
• This integrated technique provides a powerful tool for environmental analysis, particularly for polycyclic aromatic hydrocarbons.
• The method's efficiency in selective extraction and sensitive detection opens avenues for improved water quality monitoring.