But most of the drugs has tew fluorescence quantum yield, so some reagents must be added to produce fluorescence. 間接測定法是由于大部分藥物本身無(wú)熒光或者在水溶液中的熒光量子產(chǎn)率低，無(wú)法直接測定藥物熒光，必須通過(guò)加入其它試劑提高藥物的熒光量子產(chǎn)率而建立的熒光分析法。
Covalent bonds between chromogen and macromolecule chains enhance their photochemical stability, increase their whitening performance and fluorescence quantum yield. 發(fā)色團與高分子鏈間的共價(jià)鍵使其光化學(xué)穩定性大大增強，增白性能和熒光量子產(chǎn)率顯著(zhù)提高。
