(Table 1) Nd and Sr isotopic compositions and isotope dilution trace element ...
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Isotope dilution concentration determinations are accurate to approx. 1% for Rb and Sr, and 0.5% for Sm and Nd. Total procedural blanks averaged apporx. 1 ng for Sr and 100 pg...
同位素稀释浓度测定法（Isotope dilution concentration determinations）对铷（Rubidium，Rb）与锶（Strontium，Sr）的测定准确度约为1%，对钐（Samarium，Sm）和钕（Neodymium，Nd）则约为0.5%。总流程空白（procedural blanks）的平均值约为：锶（Sr）对应1纳克（ng），其余待测组分约为100皮克（pg）……
