(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...
同位素稀释法浓度测定对于铷（Rb）与锶（Sr）的准确度约为1%，对于钐（Sm）与钕（Nd）则约为0.5%。全程分析过程空白的平均值约为1纳克（ng，针对锶样品）与100皮克（pg）……
