Fast Analysis of Ketones Using a Core Enhanced Technology Accucore HPLC Column

Significance of the Topic

Efficient separation and quantification of ketones play a pivotal role in industries such as pharmaceuticals, petrochemicals and food safety. High-throughput HPLC methods enable rapid quality control, reduce analysis times and support fast decision-making in research and production environments.

Goals and Study Overview

This application note evaluates the performance of a Core Enhanced Technology Accucore C18 column (2.6 µm, 50 × 2.1 mm) for ultra-fast ketone analysis and compares it with a conventional Hypersil GOLD column (5 µm, 150 × 4.6 mm). The primary aim is to demonstrate a significant reduction in cycle time while maintaining resolution and peak shape for a mixture of seven ketones.

Methodology and Instrumentation

Sample Preparation:

• Standard ketone mixture prepared in a 1:1 ratio of acetonitrile and water.

Chromatographic Conditions:

• Instrument: Thermo Scientific Accela HPLC/UHPLC.
• Column: Accucore C18, 2.6 µm, 50 × 2.1 mm; Hypersil GOLD, 5 µm, 150 × 4.6 mm.
• Column temperature: 45 °C.
• Injection volume: 1 µL.
• Flow rate: 1.0 mL/min.
• Detection: PDA/UV at 258 nm.
• Mobile phase A: Water; Mobile phase B: Acetonitrile.
• Gradient program adjusted for each column to optimize separation within targeted cycle times.

Consumables:

• HPLC-grade water and acetonitrile.
• Certified vials with PTFE-lined caps.

Main Results and Discussion

The Accucore C18 column achieved baseline separation of seven ketones in under 1 minute, compared to an 11 minute run on the Hypersil GOLD. This represents a seven-fold increase in throughput. Key observations include:

• Retention times on Accucore ranged from 0.18 to 0.73 min versus 2.68 to 4.95 min on Hypersil GOLD.
• Sharp, symmetrical peaks with minimal tailing due to reduced secondary interactions on the core–shell stationary phase.
• Back-pressure remained below 330 bar, compatible with standard HPLC systems.

Benefits and Practical Applications

The fast method provides:

• High sample throughput for routine quality control.
• Excellent retention time reproducibility.
• Lower operating pressure compared to sub-2 µm columns, eliminating the need for specialized pumps.
• Robust performance for diverse ketone mixtures in pharmaceutical or environmental testing.

Future Trends and Opportunities

Emerging areas for development include:

• Expansion of core–shell technology to a wider range of polar and non-polar analytes.
• Integration with mass spectrometry for enhanced sensitivity and specificity.
• Green chromatography approaches using reduced solvent volumes and alternative mobile phases.
• Automation of sample preparation and direct online monitoring applications.

Conclusion

The Accucore C18 column delivers rapid, high-efficiency separation of ketones with excellent peak shape and reproducibility. Its compatibility with conventional HPLC hardware and significant reduction in analysis time make it an attractive choice for high-throughput laboratories.