Atomx Automated VOC Sample Prep System

Significance of the Topic

The analysis of VOCs in water and soil is essential for environmental monitoring and regulatory compliance. Automated preparation reduces human error and ensures sample integrity, meeting stringent methods such as USEPA Method 5035.

Objectives and Overview

This document presents the Atomx system that integrates an autosampler and purge and trap concentrator into a single platform. It aims to simplify VOC sample preparation workflows, improve throughput, and maintain compliance with key EPA and ASTM methods.

Used Instrumentation

The Atomx combines several modules into one instrument

• An 80 position carousel for vial handling
• Single needle transfer system for liquid and solid samples
• Automated methanol extraction port with Extractasol clean up
• Three independent standard injection systems
• Digital mass flow controller and heated sample paths
• VOC TekLink software for method control and diagnostics

Methodology and Protocols

The system automates key steps in VOC analysis including sample aliquoting, purging, trapping, desorption, and baking. It supports low and high level soil protocols via direct purge or methanol extraction. Automated dilution and rinse cycles minimize carryover. Compliance with EPA and ASTM methods is achieved through programmable parameters.

Main Results and Discussion

Comparative studies show automated methanol extraction yields equivalent recoveries to manual methods while cutting labor and time. Extractasol rinsing effectively reduces cross contamination. The system maintains precise volume delivery with less than 1 percent RSD and reliable standard injections under 10 percent RSD.

Benefits and Practical Applications

By merging autosampler and purge trap into one, bench space and instrument costs are reduced. The closed sampling system preserves volatile analytes and ensures regulatory compliance. Target industries include environmental monitoring, food and beverage, pharmaceuticals, flavor and fragrance, and petrochemicals.

Future Trends and Possibilities

Upcoming developments may involve integration of cryofocusing modules, advanced data analytics within software, expanded method libraries, and enhanced automation for in field deployment. Adoption of greener solvents and miniaturized components could further streamline VOC analysis.

Conclusion

The Atomx is a pioneering automated VOC sample preparation system that delivers high throughput, reliable performance, and compliance with established environmental methods. Its unique features such as methanol extraction automation and low carryover make it a valuable tool for modern analytical laboratories.