Investigation of the Xevo TQ-S cronos System’s Robustness for the Determination of Acrylamide in Processed Potato Chips

Importance of the Topic

Acrylamide is a processing contaminant formed in carbohydrate-rich foods during high-temperature cooking. It poses health risks due to its potential carcinogenicity and is regulated by EU benchmark levels. Reliable monitoring of acrylamide in food products like potato chips is essential for food safety, quality control, and regulatory compliance.

Objectives and Study Overview

This study evaluates the robustness of the Waters Xevo TQ-S cronos triple quadrupole mass spectrometer for quantitative acrylamide analysis in processed potato chips. The goal is to demonstrate uninterrupted instrument performance under challenging matrix loads and to verify compliance with EU Regulation 2017/2158.

Methodology and Instrumentation

Samples were extracted using QuEChERS followed by an enhanced UHPLC cleanup kit for acrylamide. Chromatographic separation was performed on an ACQUITY UPLC I-Class PLUS with an HSS C18 SB column (2.1×100 mm, 1.8 μm) using a water/formic acid and methanol gradient at 0.2 mL/min. Detection utilized the Xevo TQ-S cronos in ESI+ MRM mode with these key features:

• Reverse cone design to reduce contamination of the sampling orifice
• Orthogonal geometry ion source to enhance ion transmission and remove neutrals
• StepWave ion guide for improved desolvation and ion focusing
• T-Wave collision cell enabling rapid, focused MS/MS acquisition

MRM transitions included 72.1→55.1 (quantifier), 72.1→44.1 and 72.1→27.1 (qualifiers) for acrylamide, and 75.0→58.1 for the d3 internal standard.

Main Results and Discussion

Matrix characterization revealed approximately 40% signal suppression in potato chip extracts compared to solvent. Source optimization identified a 5.4 mm ESI probe position from the cone entrance and a cone gas flow of 0 L/hr as the most challenging yet stable conditions. Under these settings, over 500 consecutive injections (83 hours, >1.5 mg matrix load) were performed without cone cleaning or maintenance. The peak area %RSD remained below 2.2% for both acrylamide and its internal standard, and control charts confirmed results within two standard deviations of the mean.

Benefits and Practical Applications

The Xevo TQ-S cronos system offers:

• High robustness against matrix fouling, enabling extended unattended operation
• Consistent sensitivity and precision suitable for regulatory compliance testing
• Rapid throughput for routine food safety laboratories
• Minimal operator intervention, reducing downtime and labor costs

Future Trends and Applications

Advances may include integration of automated sample cleanup workflows, expansion to other food matrices and contaminants, and real-time data analysis using AI algorithms. Further instrument miniaturization and enhanced ion optics could improve sensitivity and throughput, supporting on-site or field-based monitoring.

Conclusion

The application demonstrates that the Waters Xevo TQ-S cronos system delivers reliable, high-throughput quantification of acrylamide in processed potato chips under stringent conditions. Its innovative design features ensure long-term robustness, precise measurement, and compliance with regulatory standards without frequent maintenance.

Reference

1. Waters Corporation. Determination of acrylamide in processed foods using the ACQUITY UPLC I-Class System and Xevo TQ-S micro Application Note (2019)
2. EU Regulation 2017/2158. Establishing mitigation measures and benchmark levels for the reduction of acrylamide in food. Official Journal of the EU, L304/24–44