我做的是油样,采用的是FT-ICR MS,送样做的分析,产物中检测到含Na的物质,投稿后审稿人问了个问题: Why was a sodium formate solution used to calibrate internally? It seems illogical to use a sodium solution when the sodium ions are sodiating some (but not all) of the target compounds. 审稿人的意见就是:为何采用甲酸钠做内标物? |