1, ????? reagents ?? ??? ????

??? ?? ???? ??? ????

????? ? ????? ?????? ??? ????? ????? ??? ????? (??? ?????? ????) ????? ??? ???? ????? ??? ??? ?? ???? ?? ????? ???? ????? ?????? ???? ????? ????? ?????

????????? ????? ???, ????? ? ?????? ?? ???? ion??? ??????? ?????? ??? ???? ??? ?? ?????? ????.

? Redox Reaction ?? ????

?????? ? ???? ?????? ??? ??? ??????? ???? (??? ??????? ??) ?? ???? ?? ??????? ????? ???? ??? ???? ??? ?? ?????

2, ????? ????? ?? ??????? ?????

???? ???? ???? ????

??????? ????; UV spectrophotometry, ???? ????? ??? ??? ??????? (HPLC) ??? ????? ???? ?? ????? ??? ???? ?????? ? ??? ????? ?????, ????? ????? (??? ???? ?????) ?????.

???? ?? ??????? ????; ?????? ?? ????? ?? ?????? ?? ?????? ????? ?? ?????? ??? ???? ????? ??????? ??? ??? ??????? ????? ????? ??????

????? ????? ???

????? ????? (??? ???? ?? ??? ????) ????? ????????? ???? ?? ???? ???? ?????? ????? ???? ??? ???? ?????? ? ??? ????

3. ????? ??? ?? ????? ???

?????? ???? ??? ?????

?????? ? ?????? ????? ????? ???? ????? ?????? ???? ?? ????? ??????? ?????? ???? ????? ???-???? ?????? ?????? ??????

?????? ?? ?????? ????? ??? ????? ????? ?????? ?? ?????? ?? ??? ???? ???? ?????

???? ???? ?? reagent ?? ????

?????? ???? ???? ?? (??? ????? ? ???? ??) ??????? ??????? ??? ???? ?? ????? ??? ?? ?????? ???? ???? ??????

4, ???? ????? ?? ???? ????

?? ?????

????? ???? ??? ????? (?????? ???? 95.6% ~ 101.0%) ????? ???? ??????? ??????

?????? ???????? ?????? ??? 2,4-dinitrophenylhydrazine colorimetric ?? ?? iodometric ?? ?? ????? ????? ?????.

???-???? ?????? ?????

???? ????? ??? ???? (??? ?????? ??) ???????? ????? (??? ??? ?? ???? ??? ??) ???? ?????? ?????

??????- ????? ? ?????? ??? ???? reagent ???? ?? ????? ??? ????? ???. ??? ????? ?????? ????? ??? ?? ???? ??? ?? ???? ???????? ???? ???? ?? ???? ???? ??? ????? ??? ?????

http://www.jvvw.cn/ascorbic-acid-is-also-known-as-vitamin/