Development of a safety analysis method for volatile organic compounds using 2-phenoxyethanol as solvent

Area of Science:

• Environmental Chemistry
• Analytical Chemistry
• Occupational Health

Background:

• Indoor volatile organic compounds (VOCs) are critical for assessing worker exposure risk.
• Traditional methods use activated carbon sampling and GC-MS analysis.
• Solvent selection for VOC extraction from activated carbon is vital for accurate analysis.

Purpose of the Study:

• To evaluate 2-phenoxyethanol as a low-toxicity solvent for VOC extraction from activated carbon.
• To compare the efficiency of 2-phenoxyethanol with conventional solvents.
• To develop optimized GC-MS conditions for analyzing VOCs extracted with 2-phenoxyethanol.

Main Methods:

• VOCs were extracted from activated carbon using 2-phenoxyethanol.
• Extraction efficiency was assessed at room temperature and 50°C.
• Gas chromatography-mass spectrometry (GC-MS) was used for analysis.
• GC conditions, including column type and injection parameters, were optimized.

Main Results:

• 2-phenoxyethanol demonstrated effective extraction of various VOCs.
• Recovery rates ranged from 57% to 83% at room temperature and 67% to 102% at 50°C.
• These recoveries were generally higher than those of CS2, acetone, and n-hexane.
• Optimized GC conditions prevented issues like bubble formation and ensured complete solvent removal.

Conclusions:

• 2-phenoxyethanol is a suitable, low-toxicity alternative solvent for VOC extraction.
• This method enhances the accuracy and safety of VOC exposure assessments.
• The study provides a foundation for improved VOC analysis methods in occupational settings.