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An analytical method for simple N-nitrosamides

R Saul, W R Bruce, M C Archer

IARC Scientific Publications

|January 1, 1982

Summary

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A new clean-up method effectively removes interfering chemicals from fecal samples. This allows for reliable detection of N-nitrosamides using established analytical techniques like colorimetry or HPLC.

Area of Science:

Analytical Chemistry
Toxicology
Environmental Science

Background:

Accurate detection of N-nitrosamides in complex matrices like feces is challenging due to interfering substances.
Existing analytical methods require robust sample preparation to ensure reliable results.

Purpose of the Study:

To develop and validate a clean-up method for the reliable detection of N-nitrosamides in fecal samples.
To adapt the clean-up procedure for potential application to other complex biological and food samples.

Main Methods:

A novel clean-up procedure was developed to isolate N-nitrosamides from fecal matrices.
The efficacy of the clean-up was assessed by analyzing samples using colorimetric methods (Preussmann & Schaper-Druckrey, 1972) and High-Performance Liquid Chromatography (HPLC) with UV detection.

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Main Results:

The developed clean-up method effectively removes interfering chemicals from feces.
Good recovery rates were achieved for four different N-nitrosamides spiked into fecal samples.
The clean-up procedure enables reliable N-nitrosamide detection via colorimetry or HPLC-UV.

Conclusions:

The described clean-up method is suitable for the reliable quantification of N-nitrosamides in feces.
The methodology, or its components, may be adaptable for sample preparation in food, tissue, and body fluid analysis.