【求助】一个问题请教大家，香水中酒精含量，希望能留下言论

1、用水稀释香精析出，但还有部分溶解在体系里吧。分析条件应考虑将所有组分洗脱出去，不要有高沸物残留在气相柱子里 。
因为含有乙醇，过滤使用有机系的滤膜或通用滤膜。
2、标品浓度和样品浓度接近，用单点外标法来定量是可以的。
至于重复性差，因素较多，分析方法、进样方式、峰形及积分参数等都有影响，还需要楼主提供更多的信息才好判断。

这个做起来比较负责啊

1, organic based filter or general usage are suitable...because inside your same still have organic solvent/ substances

2. of course you can use single point. but are you sure all of your sample tested won not differ much from your sample? for prevention, why don't you just prepare a standard curve for future use?

some more you did mention that at 700mg/ml your reading/ peak is not stable....which means your precision and accuracy got problem..is not repeatable!! so i suggest you to prepare a standard curve

1.考虑用水与甲醇体系来稀释样品，看看效果如何
2.浓度有60%，如果进色谱，误差会很大，色谱一般来做痕量的吧，想想有别的替代方法吗？