Cadmium isotopes Dotaz Zobrazit nápovědu
A116Cd-106Cd double-spike method in combination with thermal ionization mass spectrometry (TIMS) was applied to obtain cadmium (Cd) mass fractions and stable isotope compositions in seven biogenic certified reference materials (pine needles, tomato leaves, spinach leaves, lichen, mussel tissue, oyster tissue, and pig kidney). This sample set was supplemented by the analysis of two manganese nodules and one soil reference material for which the Cd isotopic data has already been reported. The intermediate measurement precision of the whole protocol as determined for the NIST SRM 3108 Cd standard solution yields an excellent value of δ114/110Cd of -0.005 ± 0.029‰ (2SD, n = 47). The Cd isotopic compositions of the biogenic materials, reported as δ114/110Cd relative to NIST SRM 3108, range from -0.52 to +0.50‰. Plants show δ114/110Cd mean values ranging from -0.09 to +0.45‰ whereas the δ114/110Cd value of -0.17‰ was detected in the lichen and the values of -0.51, -0.52, and +0.47‰ were gathered for the oyster, mussel, and pig kidney tissues, respectively. The observed large variation of the δ114/110Cd values in the biogenic reference materials indicates a potential to use the natural mass-dependent Cd isotope fractionation in environmental, biogeochemical, and physiological studies.
- MeSH
- dieta MeSH
- injekce subkutánní MeSH
- izotopy rtuti MeSH
- izotopy zinku MeSH
- kadmium krev metabolismus MeSH
- krysa rodu rattus MeSH
- radionuklidy MeSH
- rtuť krev metabolismus MeSH
- selen farmakologie MeSH
- zinek krev metabolismus MeSH
- zvířata MeSH
- Check Tag
- krysa rodu rattus MeSH
- ženské pohlaví MeSH
- zvířata MeSH
