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Aluminum
Location: Group 13, Period 3
Atomic Weight: 26.98154
Coordination Number: 6
Chemical Form in Solution: Al(H2O)6+3
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, HF and H2SO4. Avoid neutral media. Soluble in strongly basic NaOH forming the Al(OH)4(H2O)21- species. Stable with most metals and inorganic anions. The phosphate is insoluble in water and only slightly soluble in acid.
Stability: 2-100 ppb levels stable for months in 1% HNO3 / LDPE container. 1-10,000 ppm solutions chemically stable for years in 2-5% HNO3 / LDPE container.
Al Containing Samples (Preparation & Solution): Metal (is best dissolved in HCl/ HNO3); α - Al2O3 (Na2CO3 fusion in Pt0); γ - Al2O3 (soluble in acids such as HCl); Ores (carbonate fusion in Pt0 followed by HCl dissolution); Organic Matrices (Sulphuric / peroxide digestion or nitric / Sulphuric / perchloric acid decomposition, or dry ash and dissolution in dilute HCl.
Atomic Spectroscopic Information: (red text indicates severe at ~ concs.)| Technique / Line | Estimated D.L.* | Order | Type | Interferences |
| ICP-OES 394.401 nm | 0.05/.006 µg/mL | 1 | atom | U, Ce |
| ICP-OES 396.152 nm | 0.03/.006 µg/mL | 1 | atom | Mo, Zr, Ce |
| ICP-OES 167.078 nm | 0.1/.009 µg/mL | 1 | ion | Fe |
| ICP-MS 27 amu | 30 ppt | n/a | M+ | 12C15N, 13C14N, 1H12C14N, 11B16O, 54Cr2+, 54Fe2+ |
| *ICP-OES D.L.'s are given as radial / axial view |
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