ANALYZE SAMPLES QUICKER, USING LESS GAS WITH AGILENT’S FAST SEQUENTIAL MODE

Importance of the topic

Flame atomic absorption spectrometry (FAAS) remains a cornerstone technique for trace element determination across environmental, industrial, and research laboratories. Methods that boost throughput and trim operating expenses help labs meet growing sample loads while promoting sustainable practices.

Objectives and Study Overview

This evaluation compares Agilent’s Fast Sequential (FS) mode—alone and paired with PROMT acquisition—to conventional FAAS, focusing on reductions in analysis time and gas consumption without requiring additional hardware.

Methodology and Instrumentation

• Instrumentation: Agilent Flame AA spectrometer configured for FS mode, PROMT acquisition, and autosampler use.
• Analytes: Nine elements—Cr, Ag, Cu, Mn, Fe, Co, Ni, Pb, Mg—across 24 samples.
• Procedure: Three measurement modes were applied: conventional FAAS (three 3 s integrations per element), FS mode (single aspiration per sample for all elements), and FS mode with PROMT precision limits. A calibration zero, three standards, and a 5 s rinse every ten samples were included.

Main Results and Discussion

• Analysis Time: Conventional—95 min; FS mode—52 min; FS+PROMT—36 min.
• Gas Consumption: Conventional—190 L; FS—104 L; FS+PROMT—72 L of acetylene and nitrous oxide.
• Operational Insight: FS mode consolidates multi-element measurements into one aspiration per sample, reducing idle cycles. PROMT accelerates analysis of high-concentration elements by dynamically adjusting integration until precision targets are met.

Benefits and Practical Applications of the Method

• Enhanced Productivity: Over 45 % reduction in runtime facilitates higher sample throughput.
• Cost Efficiency: Significant savings on acetylene and nitrous oxide consumption lower laboratory expenses.
• Reduced Waste: Lower sample and reagent volumes decrease disposal volumes and maintenance intervals.
• Ease of Use: No add-on hardware needed; rapid method setup supports diverse analytical needs.

Future Trends and Potential Applications

Continued demands for faster, greener analyses may drive the integration of intelligent control algorithms and extend FS principles to other spectroscopic platforms. Automated precision tuning and real-time quality assessment could further optimize resource use.

Conclusion

Agilent’s Fast Sequential mode—with optional PROMT acquisition—transforms FAAS by reducing analysis time and gas consumption by over 60 % without extra accessories. This advancement offers laboratories a cost-effective, sustainable path to high-throughput, multi-element analysis.