Analytical Periodic Table
Iridium Expanded View

Iridium Print | Periodic Table ]

Location:  Group 9, Period 6
Atomic Weight:  192.22
Coordination Number:  6
Chemical Form in Solution:  IrCl6-2

Storage & Handling:  Keep tightly sealed when not in use. Store and use at 20 ± 4°C. Do not pipet from container. Do not return portions removed for pipetting to container.

Chemical Compatibility:  Soluble in HCl, HNO3, H2SO4, and HF aqueous matrices. May cause AgCl precipitation when mixed with Ag+. Stable with all other metals.

Stability:  2-100 ppb levels. 2-100 ppb levels stable for months in 1% HNO3 / LDPE container. 1-10,000 ppm solutions chemically stable for years in 10% HCl / LDPE container.

Ir Containing Samples (Preparation & Solution):  Metal (elevated temperature with aqua regia or HCl / Cl2 {gas} ); Ores (HF / H2SO4 digestion followed by aqua regia digestion); Platinum scrap (aqua regia digestion).

Atomic Spectroscopic Information:  (red text indicates severe at ~ concs.)
Technique / LineEstimated D.L.*OrderTypeInterferences
ICP-OES 224.268 nm0.03 µg/mL1ionCu, Nb, Hf
ICP-OES 212.681 nm0.03 µg/mL1ionTa, Yb, Au, V
ICP-OES 205.222 nm0.06 µg/mL1atomFe
ICP-MS 191 amu2 pptn/aM+175Lu16O
*ICP-OES D.L.'s are given as radial / axial view

Iridium (Ir) Single-Element Standard
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