7016D Autosampler - Automated Canister and Tedlar® Bag Analysis

Importance of the Topic

Analytical measurement of volatile organic compounds in large canisters and sampling bags is essential for environmental monitoring and regulatory compliance. Automation of sample introduction and preconcentration improves reproducibility, throughput and data quality in ambient air toxics analysis.

Objectives and Overview

This summary describes a high capacity autosampler system consisting of the 7016D autosampler integrated with the 7200 preconcentrator. The design goal is to automate analysis of up to sixteen 6 L canisters or Tedlar bags in accordance with EPA Methods TO-14A and TO-15.

Methodology and Instrumentation

• 7016D Autosampler with sixteen inlet ports and inert Silonite coated flow paths heated to minimize carryover of reactive compounds
• Automated back-flush of each sampling line and software-controlled leak checking to verify system integrity before analysis
• Digitally controlled rotary valve actuator with sensor feedback for precise port alignment without manual tubing rotation
• 7200 Preconcentrator with modular dehydration, cold trap, focusing and flow control stages, interfaced via USB to Windows-based SmartLab II software
• SmartLab II platform for scheduling, data storage, standardized reporting and quality assessment

Main Results and Discussion

The combined 7016D and 7200 system enables unattended analysis of multiple canisters or bags, significantly increasing laboratory throughput. Inert flow paths and heated lines enhanced recovery of target analytes. The system supports connection of up to three autosamplers per preconcentrator for high sample capacity, while integrated calibration and internal standard modules ensure analytical accuracy.

Benefits and Practical Applications

• Increased sample throughput with minimal operator intervention
• Reliable detection of low-level air toxics in compliance with regulatory standards
• Flexible handling of various container sizes using dedicated adapters
• Automated quality checks to reduce risk of leaks and carryover

Future Trends and Possibilities

Future developments may include deeper integration with laboratory information management systems, remote monitoring via cloud platforms, predictive maintenance alerts and expanded compatibility with emerging sampling vessels and analytical modules.

Conclusion

The 7016D autosampler coupled with the 7200 preconcentrator provides a robust, automated solution for VOC analysis in large canisters and bags. Its inert design, digital control and advanced software deliver reliable results while streamlining laboratory workflows.

Reference

No external literature references were cited in the source document.