UD6000AT+

Analysis of Volatile Organics by ICP-AES and ICP-MS

Volatile organic solvent analysis by ICP-AES or ICP-MS is compromised by numerous factors. Organic solvent vapors have the ability to destabilize and/or extinguish the plasma, carbon-based interferences may inhibit analyte detection, and carbon may build up on the hardware components such as the ICP torch or ICP-MS sampling interface. The U6000AT+ effectively removes organic solvent vapors allowing improved analysis of organics.

General Operating Conditions for Organics

When considering volatile organics, the desolvation cooling temperature is generally reduced to -10ºC to -15ºC. This decreased temperature reduces the organic vapor loading to the membrane desolvator. Nebulizer gas flow (0.5 L/min – 1.1 L/min) and sweep gas flow (1.5 L/min – 4.0 L/min) may be adjusted throughout a wide range to attain the best performance.

Optional Blend Gas Accessory

An optional blend gas accessory (CETAC BGX-100) is available for the U6000AT+. The BGX-100 comes equipped with a precision mass flow controller for the addition of oxygen gas to the sample aerosol exiting the membrane desolvation module. Oxygen addition helps to prevent carbon buildup on the ICP torch and/or ICP-MS sampling interface. This accessory is recommended for the analysis of non-oxygenated solvents such as toluene and hexane. Generally the flow rate of oxygen required is only 10-20 mL/min.