Liquid-chromatographic determination of urinary pentachlorophenol

Area of Science:

• Environmental Chemistry
• Analytical Chemistry
• Occupational Health

Background:

• Pentachlorophenol (PCIP) is an industrial chemical with potential health risks.
• Monitoring worker exposure to PCIP is crucial for occupational safety.
• Existing methods for PCIP determination may be complex or time-consuming.

Purpose of the Study:

• To develop and validate a simple, reliable liquid-chromatographic method for quantifying urinary pentachlorophenol (PCIP).
• To establish a method suitable for routine monitoring of industrial PCIP exposure.

Main Methods:

• Developed a liquid-chromatographic method with ultraviolet detection for urinary PCIP analysis.
• Utilized solid-phase extraction for sample preparation with 2,3,5,6-tetrachlorophenol (TCP) as an internal standard.
• Validated the method for accuracy, precision, and linearity.

Main Results:

• The method demonstrated good precision (intra-assay CV 6.6%, interassay CV 7.9%) and analytical recovery (89-96%).
• Analyzed urine samples from unexposed individuals showed PCIP levels below the detection limit (0.25 mg/L).
• Exposed workers' urine samples ranged from 7.0 to 12.4 mg/L PCIP, with a linear standard curve up to 300 mg/L.

Conclusions:

• The developed liquid-chromatographic method is simple, accurate, and precise for determining urinary PCIP.
• The method's adaptability to automation makes it suitable for monitoring industrial exposure.
• This technique can aid in assessing and managing occupational risks associated with PCIP.