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Measurement of labile Cu in soil using stable isotope dilution and isotope ratio analysis by ICP-MS
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nolan, Annette L. Ma, Yibing Lombi, Enzo McLaughlin, Mike J. |
| Copyright Year | 2004 |
| Abstract | Isotope dilution is a useful technique to measure the labile metal pool, which is the amount of metal in soil in rapid equilibrium (<7 days) with the soil solution. This is normally performed by equilibrating soil with a metal isotope, and sampling the labile metal pool by using an extraction (E value), or by growing plants (L value). For Cu, this procedure is problematic for E values, and impossible for L values, due to the short half-life of the 64Cu radioisotope (12.4 h), which makes access and handling very difficult. We therefore developed a technique using enriched 65Cu stable isotope and measurement of 63Cu/65Cu ratios by quadrupole inductively coupled plasma mass spectrometry (ICP-MS) to measure labile pools of Cu in soils using E value techniques. Mass spectral interferences in detection of 63Cu/65Cu ratios in soil extracts were found to be minimal. Isotope ratios determined by quadrupole ICP-MS compared well to those determined by high-resolution (magnetic sector) ICP-MS. E values determined using the stable isotope technique compared well to those determined using the radioisotope for both uncontaminated and Cu-contaminated soils. |
| Starting Page | 789 |
| Ending Page | 797 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| DOI | 10.1007/s00216-004-2816-6 |
| PubMed reference number | 15517206 |
| Journal | Medline |
| Volume Number | 380 |
| Alternate Webpage(s) | https://digital.library.adelaide.edu.au/dspace/bitstream/2440/41458/1/McLaughlin_442_final.pdf |
| Alternate Webpage(s) | https://doi.org/10.1007/s00216-004-2816-6 |
| Journal | Analytical and bioanalytical chemistry |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
