ALS Geochemistry’s unique super trace ICP-MS methodology is now paired with a four acid digestion, providing the lowest detection limits in the industry for near-total analysis.
Four acid multi-element analysis has been gaining popularity in exploration because of it’s ability to provide a full pathfinder element suite and a cost-effective proxy for mineralogy. Our new super trace four acid package, ME-MS61L, provides robust results at levels well below the lowest regional backgrounds for most elements – allowing an unprecedented level of detail in major and trace element geochemistry on every sample.
The precision of a measurement depends on detection limit, method tolerance, and concentration. Lowering detection limits removes analytical noise and may reveal anomalous patterns at levels previously unattainable, as with the example of arsenic below.
ME-MS61L data is highly versatile. In addition to the traditional mapping of base metal and trace element anomalies, major element results across an entire drill program can be used in lithogeochemical modelling when combined with standard whole rock analysis techniques on a smaller sample set. ME-MS61L can also be used for low-cost bedrock lithomapping in residual soils.
The rich information gained from near-total multi-element analysis adds value to minerals projects well beyond exploration and into geometallurgy and environmental planning.
Leading the field in analytical innovation.
The expert method development team at ALS Geochemistry have achieved dramatic detection limit improvements with a state-of-the-art combination of collision/reaction cell ICP-MS and an advanced sample introduction system designed in-house. Benefits of this technology include higher signal to noise ratios, fewer oxide and polyatomic interferences, and low carry over effects. A major source of uncertainty in ICP-MS analysis is the formation of oxides in the plasma. The super trace methodology at ALS results in oxide formation of <0.5%, compared to ~3% achieved with other instrumentation.
In other words, the usual problems preventing ultra low detection limits in ICP-MS analysis of geological materials are minimized, allowing a greater separation of geochemical anomaly from background and the ability to more finely detail changes in alteration and lithology using multivariate analysis.
ME-MS61L – Super trace 48 elements by four acid and ICP-MS/ICP-AES
Analytes and ranges (ppm)
|Analytes and ranges (ppm)|
Four acid digestion dissolves nearly all minerals in the majority of geological samples. ME-MS61L provides extensive coverage of trace elements as well as major element proxies for mineralogy using ICP-MS and ICP-AES analysis. The rare earth elements, which are not fully extracted in a four acid digestion, may be added to this package on request. Mercury must be analyzed separately.
Super trace detection limits dramatically improve the precision of geochemical data at low concentrations, giving you confidence in subtle anomalies and variance throughout the drill program.