学科：地球化学 词目：同位素稀释剂 英文：isotopic spike 释文：通过人工方法制备或自然界提取高度富集某种同位素的元素制剂，用于该元素含量的质谱法定量测定。这一制剂称为同位素稀释剂，如高度富集235U、如5Pb、84 Sr、38Ar的制剂。
铅同位素“双稀释剂”同位素定年法是当前应用较广的一种铅同位素定年方法。双同位素稀释法的目的在于校正质量鉴别效应，提高测定精度。
"Double spike" isotopic dating method of lead isotope is one of the dating ways of lead isotope, its aim is to correct mass differentiation effect and enhance the precision of measure.
仪器的质量分馏校正是提高同位素分析数据精度的关键。“同位素双稀释剂”的测定方法可实现严格的仪器质量分馏校正。
The key to increasing the accuracy of isotope measurement is the proper mass fractionation of instrumental mass discrimination calibrated by double spike.
应用推荐