ATOMX XYZ - Automated VOC Sample Prep System

Importance of the topic

Reliable, high-throughput preparation of volatile organic compounds (VOCs) from soil and water matrices is essential for environmental monitoring, regulatory compliance, and risk assessment. Automated systems that integrate sample handling, purge-and-trap concentration, and methanol extraction reduce manual intervention, minimize errors, and ensure consistent results across laboratories.

Objectives and overview

This summary examines the Atomx XYZ, the second-generation combined soil/water autosampler and purge-and-trap concentrator from Tekmar. Key goals include demonstrating its unique automated methanol extraction for high-level soils (EPA Method 5035), improved moisture control, reduced instrument footprint, and expanded method compatibility.

Methodology and instrumentation

The Atomx XYZ employs:

• 84-position vial tray with optional 4 °C chiller
• Precision-machined valve manifold to minimize leaks
• Electronic mass flow controller (MFC) for helium or nitrogen flows (5–500 mL/min)
• Integrated methanol rinse, programmable dilutions, and three standard addition vessels
• TekLink™ software with touchscreen compatibility and USB connectivity

Sample pathways use inert materials (glass, PEEK™, SilcoTek®), and automated rinse cycles (methanol and high-temperature DI water) maintain cleanliness. The system supports EPA, ASTM, and state methods for VOCs in water, soils, and sediments.

Main results and discussion

Compared to its predecessor, the Atomx XYZ reduced its footprint by 13 cm and lowered water transfer to the GC by up to 60% through an improved moisture control system. Dedicated trap cooling ducting accelerates desorption cycles, enabling total purge-and-trap runs in 20 minutes or less. Proprietary trapping materials and precision injection valves deliver excellent desorption efficiency and repeatable standard additions. Automated leak checks and built-in diagnostics streamline maintenance and troubleshooting.

Benefits and practical applications

Key advantages include:

• High sample throughput with minimal operator input
• Seamless compliance with EPA Methods 502.1–8240 and related standards
• Automated methanol extraction for high-level soil VOCs
• Flexible aqueous dilutions and blank management
• Robust diagnostics and history logging for QA/QC

This versatility makes the system ideal for environmental laboratories performing routine drinking water, wastewater, soil screening, and compliance testing.

Instrumentation

The complete setup comprises an 84-position autosampler, purge-and-trap concentrator, 25 mL syringe, fritted or fritless sparge vessels (5 mL or 25 mL), three 15 mL UV-protected standard vessels, and an MFC-controlled gas supply. TekLink™ software runs on Windows 7 or higher via USB.

Future trends and opportunities

Emerging developments may include integration with laboratory information management systems (LIMS), real-time data analytics with machine learning, greener solvent alternatives, and miniaturized modules for field deployment. Enhanced IoT connectivity and automated calibration routines will further advance VOC monitoring efficiency.

Conclusion

The Atomx XYZ represents a significant step forward in automated VOC sample preparation, combining robust hardware, advanced flow control, and intuitive software. Its unique methanol extraction capability and optimized moisture management deliver reliable, high-throughput analyses, meeting stringent regulatory demands while reducing operator burden.