Research progress on sample pretreatment methods for migrating substances from food contact materials

Area of Science:

• Analytical Chemistry
• Food Safety Science
• Materials Science

Background:

• Migration of substances from food contact materials (FCMs) poses health risks.
• Analyzing low-concentration contaminants in complex FCM matrices is analytically challenging.
• Effective sample pretreatment is vital for accurate migration analysis.

Purpose of the Study:

• To systematically review sample pretreatment methods for FCM migration analysis over the past decade.
• To highlight advancements in techniques for both volatile and non-volatile migrating substances.
• To discuss emerging trends and future prospects in FCM sample preparation.

Main Methods:

• Review of extraction techniques including headspace extraction, solid-phase microextraction, purge and trap, solid-liquid extraction, and field-assisted extraction.
• Discussion of enrichment processes using liquid-liquid extraction, solid-phase extraction, and microextraction techniques.
• Summary of new developments in devices, adsorbents, and rapid detection methods.

Main Results:

• Established methods like headspace extraction and solid-liquid extraction are effective for different substance types.
• Microextraction techniques offer efficient enrichment for trace contaminants.
• Recent progress includes novel devices, specific adsorbents, and rapid sample preparation strategies.

Conclusions:

• Sample pretreatment is essential for overcoming challenges in FCM migration analysis.
• Continuous innovation in pretreatment methods enhances analytical efficiency, sensitivity, and reliability.
• Future directions focus on non-targeted analysis and rapid detection of unintentionally added substances.