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1. Analysis techniques
In a mineral analysis laboratory, most elemental assays (element concentration in a given sample) are performed using atomic spectroscopy techniques. The instrumentation market for these types of analysis essentially offers equipment originally designed for solution analysis. Only a few manufacturers still offer equipment designed for direct analysis of solid samples: X-ray fluorescence spectroscopy (XRFS) and arc/spark atomic emission spectroscopy (AES). These two techniques enjoyed considerable growth between 1950 and 1970. At present, however, they are barely able to meet the analytical requirements currently being demanded. Indeed, research programs linked to the quality of the environment, the food chain or human health require the determination of trace and ultratrace elements, i.e. concentration levels that are practically inaccessible using these analytical techniques. However,...
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Analysis techniques
Definition of analyzed media
Bibliography
References
Website
American site devoted entirely to sample preparation (Duquesne University)
Standardization
Unlike the Environmental Protection Agency (EPA) in the United States, French standardization (AFNOR) was only very late in taking an interest in the preparation of environmental samples. This is probably due to the excessive diversity of samples and the division of standardization committees. However, some of them, such as metallurgy, fertilizers and fertilizer materials, drew up standards as early as 1965 to 1975. In...
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