Benefits of a vertically oriented torch—fast, accurate results, even for your toughest samples

Importance of the Topic

The analysis of samples with high total dissolved solids is critical across environmental, mineral, and industrial laboratories. Vertical torch orientation in ICP-OES instruments enables handling of complex matrices, ensuring robust performance and low detection limits.

Objectives and Study Overview

This article evaluates the Agilent 5110 ICP-OES with vertical torch across three configurations and explores its capability to analyze high TDS samples while achieving axial view detection limits. The study highlights synchronous vertical dual view technology and assesses long term stability using a challenging brine matrix.

Methodology and Instrumentation

• Instrument Configurations
  • Synchronous Vertical Dual View (SVDV)
  • Vertical Dual View (VDV)
  • Radial View (RV)
• Key Features
  • Vertically oriented torch with plug and play loader and mass flow controllers for all plasma gases
  • Solid state RF system operating at 27 MHz with power range 750 W to 1500 W
  • Dichroic Spectral Combiner enables synchronous axial and radial emission collection
• Proof of Performance Test
  • Sample: 25% NaCl solution spiked with 0.25 mg/L As, Cd, Pb, Se
  • Mode: SVDV with high solids dual view torch and argon humidifier accessory
  • Duration: 4 hours with rinse cycles between measurements

Main Results and Discussion

The SVDV configuration demonstrated detection limits equivalent to axial viewing while maintaining the robustness of vertical torch operation in high salt matrices. Stability testing over four hours yielded relative standard deviations below 2.1 % for all elements. The SSRF system adjusted rapidly to volatile organics and high NaCl content without power limitations, ensuring consistent plasma conditions.

Benefits and Practical Applications

• Reliable analysis of high matrix samples with reduced torch cleaning and replacement intervals
• Low detection limits from axial view combined with vertical torch robustness
• Fast instrument startup and reproducible performance via automatic torch alignment
• Flexible throughput configurations, upgradable VDV to SVDV on site
• Maintenance free plasma across diverse sample types ranging from brines to acid digests

Future Trends and Opportunities

As laboratories demand higher throughput and automation, integration of advanced plasma viewing modes and AI driven optimization of parameters may further enhance performance. Expansion of dual view technology to new sample types and improved gas humidification could offer broader application in industrial and environmental analysis.

Conclusion

The Agilent 5110 ICP-OES with vertical torch and solid state RF system unites high sensitivity axial detection and rugged vertical operation. Plug and play design and mass flow controlled gas delivery streamline workflows and ensure reproducible results in challenging matrices.

Used Instrumentation

• Agilent 5110 ICP-OES with vertical torch assemblies
• Solid state RF generator (27 MHz, 750–1500 W)
• Dichroic Spectral Combiner optics
• Argon humidifier accessory

References

• Agilent Technologies Inc , 2018 , 5991-4854EN