Enhancing your analytical capabilities with efficient sample preparation

Importance of the topic

Sample preparation remains the most time-consuming and error-prone stage of many analytical workflows despite rapid advances in chromatographic and mass spectrometric detection. Efficient, automated sample preparation enhances method robustness, reduces analyst-dependent variability, lowers operational costs and solvent waste, and enables laboratories to meet regulatory throughput and quality requirements. The EXTREVA ASE Accelerated Solvent Extractor addresses these practical challenges by integrating accelerated extraction, solvent minimization and automated concentration into a walkaway, sample-to-vial workflow.

Objectives and study overview

The primary objective presented in the source material is to demonstrate how a fully integrated accelerated solvent extraction system can improve productivity, reproducibility and sustainability in routine analytical laboratories. The brochure outlines the system’s capability to (1) automate extraction and concentration from sample to vial, (2) process multiple samples in parallel, (3) reduce solvent consumption via dynamic gas-assisted extraction modes, and (4) minimize hands-on analyst time to shift resources toward higher-value tasks.

Methodology and workflow

The EXTREVA ASE system builds on accelerated solvent extraction (ASE) principles with enhancements for automation and throughput:

• Accelerated Solvent Extraction: uses elevated temperature and pressure to enhance analyte desorption and solvent penetration into solid matrices, reducing extraction time versus ambient methods.
• Dynamic gas-assisted extraction mode: introduces a gas phase to reduce solvent volumes required for effective extraction and improves mass transfer.
• Parallel processing: the platform allows multiplexing (four samples processed concurrently) to increase sample throughput compared with single-sample extraction units.
• Automated concentration and sample-to-vial transfer: integrated evaporation/concentration steps remove the need for manual solvent exchange and concentrate extracts into vials ready for instrumental analysis.

These elements are combined into a walkaway procedure where users load samples and required consumables, and the instrument executes the extraction, concentration and vialing sequence automatically.

Instrumentation used

The solution described centers on the Thermo Scientific EXTREVA ASE Accelerated Solvent Extractor. Key instrument attributes highlighted include:

• Integrated extraction and evaporation modules
• Capacity for parallel extraction (four samples simultaneously)
• Dynamic gas-assisted extraction capability for solvent reduction
• Automated fraction collection and vialing
• Software-controlled workflows for unattended operation and reproducibility

Main results and discussion

Although the source is a product brochure rather than a formal experimental study, the documented advantages can be summarized as follows:

• Throughput gains: parallel extraction and integrated concentration reduce total processing time per sample, enabling multiple samples to be prepared simultaneously rather than sequentially.
• Reduced hands-on time: walkaway automation decreases manual intervention from hours to minutes per batch, freeing analysts for other tasks.
• Improved reproducibility and recovery: automated, standardized workflows reduce operator-to-operator variability and the risk of procedural errors that can compromise recoveries.
• Lower solvent consumption and cost: dynamic gas-assisted extraction and efficient concentration lower solvent purchases and disposal costs, supporting sustainability goals.
• Cost savings: reduction in labor, solvent and rework costs translates to lower overall per-sample costs despite capital investment in advanced instrumentation.

Discussion points and practical considerations:

• Method transfer and validation are required when replacing manual workflows with an automated ASE system; improvements in reproducibility typically simplify method validation but require demonstration for target matrices and analytes.
• While solvent consumption drops, solvent choice and method parameters (temperature, pressure, cycle time) must be optimized to balance analyte recovery and matrix co-extraction.
• Integration with downstream analysis (GC/LC-MS) depends on extract cleanliness and solvent compatibility; automated concentration reduces extra handling but may necessitate final solvent exchange for some methods.

Benefits and practical applications

The EXTREVA ASE workflow is applicable across many regulated and non-regulated fields where solid or semi-solid matrices require reliable extraction prior to chromatographic or mass-spectrometric analysis. Practical benefits include:

• Environmental monitoring: soil, sediment and sludge extraction for persistent organic pollutants and pesticides with better throughput and reproducibility.
• Food safety and agrifood analytics: residue analysis in food matrices where consistent recoveries and reduced solvent contamination are critical.
• Pharmaceutical and chemical quality control: routine extraction tasks in raw material and formulation testing benefiting from automation.
• Forensics and consumer product testing: standardized, high-throughput extraction for time-sensitive investigations.

Operational advantages:

• Reduced analyst training burden and fewer human errors.
• Lower lab footprint versus multiple standalone instruments handling extraction, evaporation and concentration separately.
• Improved sustainability metrics through solvent and waste reduction.

Future trends and potential developments

Automated ASE platforms exemplify broader trends in analytical sample preparation. Expected directions and opportunities include:

• Further integration: coupling automated extraction systems directly with online LC/GC-MS or sample-transfer robotics to create end-to-end analytical pipelines.
• Green chemistry: adoption of greener solvents, solvent-free modes or supercritical fluids to further reduce environmental impact.
• Miniaturization and microextraction: development of smaller-scale ASE modules for low-volume or high-value samples.
• Data-driven optimization: use of machine learning and advanced software to optimize extraction parameters automatically for new matrices and analytes.
• Regulatory uptake: increasing acceptance of automated sample-prep workflows in validated, regulated environments as performance data accumulates.

Conclusion

Automated accelerated solvent extraction platforms like the EXTREVA ASE offer tangible improvements in throughput, reproducibility and sustainability for laboratories performing routine solid-matrix extractions. By minimizing manual steps and solvent use while enabling sample-to-vial processing, such systems reduce costs and analyst workload and increase confidence in analytical results. Adoption requires method optimization and validation for specific applications, but benefits in operational efficiency and environmental footprint are compelling for environmental, food, pharmaceutical and forensic laboratories.

References

1. Thermo Fisher Scientific. EXTREVA ASE Accelerated Solvent Extractor brochure, IN000791-EN 0625, 2022-2025. For Research Use Only. Not for use in diagnostic procedures.