Schulten H R, Ziskoven R, Lehmann W D
Z Naturforsch C Biosci. 1978 Mar-Apr;33(3-4):178-83. doi: 10.1515/znc-1978-3-404.
Quantitative ultratrace analysis (10 nmol to 10 mumol/l) of cesium in biological samples such as human body fluids and animal tissues is performed without any prior purification or concentration steps. The normal level of cesium ions in heart cells was determined. After poisoning these cells with high concentrations of the alkali cation much higher levels were found inside the cells then had been suggested previously. It is demonstrated that field desorption mass spectrometry is a unique tool for the qualitative and quantitative investigations of metal cations in biological material.
无需任何预先净化或浓缩步骤，即可对人体体液和动物组织等生物样品中的铯进行定量超痕量分析（10纳摩尔至10微摩尔/升）。测定了心脏细胞中铯离子的正常水平。在用高浓度碱金属阳离子使这些细胞中毒后，发现细胞内的铯离子水平比之前所认为的要高得多。结果表明，场解吸质谱法是对生物材料中金属阳离子进行定性和定量研究的独特工具。
