ICP-OES Torches

ICP torches are designed with appropriate settings of gas flow rates to give toroidal (or doughnut) or annular plasma at 40 MHz frequency which allows reproducible 

A Practical Approach to Quantitative Metal Analysis of Organic Matrices 

For torches to provide maximum excitation and atomisation, the following parameters must be known for each analyte-matrix-atomiser combination  

Demountable torches are also available where individual parts can be easily removed for cleaning or replacement. The major disadvantage of the demountable torch is that reassembling precisely to ensure maximum sensitivity requires special skills. The sample/gas flow from the inner tube is designed to give the correct power to penetrate the bottom of the plasma and to push itself through without extinguishing it. 

---

Figure 2.20 List of common spray chambers used in ICP-OES torches. (Reproduced with kind permission from E-POND S.A., C.P. 389, CH-i800 Vevey, Switzerland)...

This book is devoted to the analysis of organic materials with emphasis on the compatibility of the ICP-OES torch with a range of solvents. Selected suitable solvents can be used as part of non-destructive sample handling for the metal analysis of a range of organic liquids and semi-solids and contributes to eliminating tedious sample-preparation procedures. 

---