Analysis of metal chelates by electrospray ionization mass spectrometry
Conference
·
OSTI ID:210610
- Pacific Northwest Lab., Richland, WA (United States)
Solubilized metal ions pose a potential environmental threat for many waste-disposal sites. Understanding the behavior of metal ions in complex organic matrices and the possible metal-chelate complexes that could form may aid in developing remediation techniques. For example, waste tanks on the Hanford Site are known to contain large amounts of chelators such as ethylenediaminetetraacetic acid (EDTA). These chelators may be responsible for difficulties in removing some of the radioactive metals, such as {sup 90}Sr. One possible method for examining these metal-chelate complexes is electrospray ionization mass spectrometry (ESI-MS). The goal of this project is to examine the behavior of strontium (Sr) in complex mixtures containing a variety of inorganic and organic components that simulate tank waste constituents. Preliminary results presented suggest that ESI-MS can be used to study the behavior of chelators, such as EDTA, N-(2-hydroxyethyl)ethylenediaminetriacetic acid (HEDTA), and nitrilotriacetic acid (NTA), in the presence of metals such as iron (Fe) and Sr.
- OSTI ID:
- 210610
- Report Number(s):
- CONF-9505261--
- Country of Publication:
- United States
- Language:
- English
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