Basic Training 4th Annual ICP Conference

Silicon in silicone oils

3 – Sample Measurement Optical Emission or Mass Spec?

ICP-OES

ICP-MS

1. Detection limits

N/A

N/A

2. Matrix (complex) 3. Wavelengths / Masses 4. Standard compatibility

good options

~monoisotopic, interferences

N/A

N/A

ICP-OES good choice due to matrix and interference concerns

Sulfur in steel

1 – Planning Carbon/alloy steel - ~90%+ Fe - ~10% C, Ni, Cr-Mo - Sulfur limit 0.05% – 0.3% Detection limits/uncertainty Chemical composition

IDLs: OES = 50 – 200 ppb MS = 1 – 20 ppb

Sulfur = 500 – 3000 ppm before dilution