nanogram method的意思|示意

Combining the isotopic dilution (ID) method with the on-line fractionation correction method, the rhenium content can be determined accurately at sub-nanogram level using the normal solution n.

溶液中加入铱元素进行铼同位素的质量分馏校正，在常规的溶液雾化进样条件下，采用同位素稀释法可准确测定纳克级的铼含量。

It presents a simple method was presented for the separation and preparation of insect pheromones at the nanogram level by using gas chromatography (GC).

报道一个用于昆虫外激素研究的简单快速气相色谱分析制备方法。