Cadmium measurements in coral skeleton using isotope dilution-inductively coupled plasma-mass spectrometry

Kathryn A. Matthews, William F. McDonough, Andréa G. Grottoli

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Here a method for the precise analysis of Cd/Ca in coral skeleton using inductively coupled plasma-mass spectrometry (ICP-MS) is presented. Isotope dilution and gravimetric standards with internal standardization were used for Cd and Ca determination, respectively. Separation of alkaline earth metals from Cd using ion chromatography reduced the high total dissolved solids while maintaining a strong Cd signal. Repeated Cd/Ca measurements of a coral standard yielded a precision of ±2.2% (one standard deviation as a fraction of signal). Analyses of reference materials (BCR-1, BHVO-1, W-2, GSR-3, GSR-6, CACB-1, JCp-1, and JCt-1) fell within established ranges, with a precision comparable to other ICP-MS measurements. Advantages of this approach over existing methods for corals are as follows: (1) reduced introduction of high-concentration elements into the mass spectrometer, (2) sample requirements as low as 15 mg (i.e., ≥1 pmol Cd/sample), and (3) determination of multiple element ratios on the same sample aliquot with a precision of ±7% or better.

本文言語English
論文番号Q11021
ジャーナルGeochemistry, Geophysics, Geosystems
7
11
DOI
出版ステータスPublished - 2006 11
外部発表はい

ASJC Scopus subject areas

  • Geophysics
  • Geochemistry and Petrology

フィンガープリント 「Cadmium measurements in coral skeleton using isotope dilution-inductively coupled plasma-mass spectrometry」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル