Overview of Analytical

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INSTRUMENTAL

INDUCTIVELY COUPLED PLASMA OPTICAL EMISSION SPECTROSCOPY (ICP-OES)

Two, Agilent 5800 Vertical Dual View (VDV) ICP-OES instruments suitable for simultaneous, quantitative, multi-element analysis of solid, solution and organic samples. Dual view configuration allows viewing of plasma in both axial and radial orientation, to increase sensitivity for achieving lower detection limits, and to facilitate analysis of more complex matrices. A seven-port Advanced Valve System (AVS) reduces sample introduction and rinse times, thus increasing sample throughput.

Analysis packages include;

• Base metals
• Precious metals (Ag, Au)
• Platinum group metals (PGM)
• Rare earth elements (REE)
• Semiquantitative IntelliQuant scan to provide assessment of relative elemental composition in unknown samples.

 Experience in a wide range of ore types. We can tailor ICP:OES programs to meet the client’s requirements for specific sample matrices.

 Sample Preparation

• Hamilton auto dilution system
• Milestone microwave digestion system
• Peroxide fusion
• Acid digestion

Fire Assay

• Traditional and with solvent extraction

Ion selective electrode (ISE)

• Fluoride
• Ammonium

 Chemical and Physical Analysis

• Titration – Acid, hydroxide, Cu²⁺, Ni²⁺, Fe²⁺
• Colorimetric analysis – NH₃, Cl^–, SO₄^2-
• pH
• Redox (Eh)
• Conductivity (EC)
• Turbidity (NTU)
• Density (SG)

Gravimetric

• Total dissolved solids (TDS)
• Total suspended solids (TSS)
• Moisture

Quality Control (QC)

Quality control measures to ensure accuracy and precision of analytical data for the analysis of solid samples and solution samples submitted for inductively ICP:OES analysis.

• ICP-OES calibration and control standards prepared from custom made, Ultraspec, multi-Element, aqueous standards, manufactured by de Bruyn Spectroscopic Solutions. Elemental concentrations are traceable to NIST Standard Reference Material.
• Blank & QC samples are analysed after calibration repeated after every 15 samples.
• Automated in-line addition 10 mg/L Yttrium (Y) – Internal standard to account for matrix interferences.
• Blank, certified reference materials (CRMs) and/or in-house references analysed with each sample batch.