Thanks a lot. ????????, 1.?????????????SPE???????????????????????????????????????????????????Why these solution were used? Did some optimization study were accomplished?
2: ???????LOD??LOQ????εó??????????????????е??????
Thank you very much. LOD ??LOQ ?????????????и??????????S/N=3,10????????????LOQ??LOD????εó???????????????????????????????????????????????о?????????enrichment??accumulation??????????????SPE?????