Our semi-quantitative screening includes about 70 elements. This comprehensive analysis is useful for a number of applications such as:
- Estimating background levels in environmental samples such as water, biota, sediment, etc.
- The elemental screening is also useful in cases where it is uncertain which elements to expect in an analytical sample. Data from our screening analyses are often used in deciding which metals to analyze quantitatively on a routine basis.
The screening analysis can also be offered quantitatively for all elements included. Please contact us for more information or to request a quotation.
Reporting limits (LOQ)
The semi-quantitative screening can be offered for all imaginable sample matrices, and the standard LOQs will therefore also vary. Typically, LOQs for trace elements can vary from 0.00005 µg/L to 0.01 µg/L in liquids or from 0.00005 mg/kg to 0.05 mg/kg in solids. Lab will do all necessary to provide customer with best achievable LORs. Standard pricing refers to analysis without matrix separation or analyte pre-concentration. Using those, it is possible to lower LOR by approximately factor 10.
ALS offers the most sensitive analytical technique avaialable for trace-element analysis, High Resolution ICP-MS (ICP-SFMS). Our laboratory in Luleå, Sweden is custom-built, and our routines optimized, for this purpose. By ordering the screening analysis of elements you can be sure that ALS will attempt to keep the LOQs as low as possible for your specific analysis. Please contact us for more information.
The semi-quantitative screening can be performed on very low sample amounts, typically from 20mg for solid samples and few ml for liquids. The recommended sample amount will depend on sample matrix, please contact us for more information.
In cases of extremely low sample amounts, LOQs may be affected and the appropriate sampling procedure as well as containers should be discussed with the laboratory.
Scope of analysis
Certain elements may have to be excluded due to matrix interferences.
The analysis is not accredited.