10,000ug/mL THULIUM 30mL Fluodride Is the internal standard (IS)

Is the internal standard (IS) element compatible with your matrix

Cu ICP-OES 219

Oxide - GeO (readily soluble in HCl or NaOH)

Oxide-quartz (fuse in Pt0 with Na2CO3)

The PbSO4 will be transposed to the water insoluble carbonate which can be filtered off

10,000ug/mL THULIUM 30mL Fluodride Is the internal standard (IS)Element properties Thulium Location: Period 6 (lanthanoid) Atomic Weight: 168. 9342 Coordination Number: 6 to 9, 10 for some compounds Chemical Form in Solution: Tm(OH)x(H2O)y+3 x Storage & Handling: Keep tightly sealed when not in use. Store and use at 20 4C. Do not pipet from container. Do not return portions removed for pipetting to container. Chemical Compatibility: Soluble in HCl, H2SO4 and HNO3. Avoid HF, H3PO4, and neutral to basic media.