Flow analysis of silicate rocks for zirconium

Area of Science:

• Analytical Chemistry
• Geochemistry
• Environmental Science

Background:

• Accurate determination of trace elements like zirconium is crucial in geological and environmental studies.
• Traditional methods for zirconium analysis can be time-consuming and require large sample amounts.
• Developing efficient pre-concentration techniques is essential for trace element analysis.

Purpose of the Study:

• To develop and validate a flow analysis system for the on-line enrichment and determination of trace zirconium.
• To quantify zirconium concentrations in silicate rocks and minerals at parts per million (ppm) levels.
• To establish a robust method for analyzing geological samples with high sensitivity.

Main Methods:

• Utilized a flow analysis system with an on-line anion-exchange column for zirconium pre-concentration.
• Sample decomposition via fusion with boric acid and lithium carbonate, followed by dissolution in hydrochloric acid.
• Spectrophotometric detection at 665 nm using Arsenazo III for color development.

Main Results:

• Successfully enriched and determined trace zirconium concentrations ranging from several ppm to hundred ppm levels.
• The developed flow system demonstrated efficiency in handling small sample aliquots (1-4 ml).
• The method provided accurate quantification of zirconium in silicate rock and mineral samples.

Conclusions:

• The on-line anion-exchange flow analysis system is effective for trace zirconium determination in silicate matrices.
• This method offers a sensitive and efficient approach for geological sample analysis.
• The system is suitable for routine analysis of zirconium at ppm levels in rocks and minerals.