1 、 ?????? ??? ?????????? ???????????

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???????? ????????? ????????????? ?????? (????? ??? SAIB90, SAIB80), ??? ????????? ??????????? ??? ????? ??????????, ????????? ??? ?????????????????? ??????????? ????? ??? JECFA, FCC, CAC, ???"? ?. ?? ????? ????? (≤ 0.2 ?????? / ?) ??? ????? ?????? ??????? (≤ 5ppm) ????? ?????? ??????????? ??? ????? ??????.

????? ??????? ???????? (???????? ??????????? ???????????????????) ??? ?????? ?????????? ???? ???????? ????????????????, ??? ????? ?????????????????? ??? ????? ?????????? ??? ?? ??????????? ?????? ????? 99.47%, ???????? ???????? ?????????.

????? ?? ????? ??????? ??? ????????? ? ????????? ?????????? ????? ????????? ?????????? (GB 2760-2025) ?????????? ???? ?? ???????? ??????, ?? ?????? ????????? ??? ????? ?????????? (????? ??? ??????? ?????????????????) ??????? ?? ????????? ?????????? ???????? ??? ???????-??????????? ??? ???????????????? ???????????.

2 、 ??????????? ????? ??? ?????? ????????????

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

?? ?? ????????? ?????????? ???? (????? ??? 0.04-0.5 ? / ?? ????????? ?????? ??? ???????????), ???????? ????????? ????????????? ??? ???? ????????? ??????????? ????? ?????? ????????, ??? ????? ??????? ????????? ???????? (400 ?????????? / 100 ?) ??? ??????? ????? ?????? ????????? ?????.

???? ???????????, ?? ??? ??????????? ??????????? ????? ???? ?? ????-??? ???????????????, ???? ?? ?????-?????? ?????? ?????? ????? ??????? ????, ????????? ??????? ????????? ????? ???????????? ??????????? ????? ?????.

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

?????? ?????? ??? ???? ??????????? ?? ????? ?????????? ??? ?????????? ?????????? ??????????????? (????? ??? ?????????, ?????) ????? ?????????? ?????????? (????? ??? ??????), ????? ???? ???? ????????? ?? ?????????? ???? ????? ????????.

3、 ???????????????? ?????????? ??? ???????? ?????????

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

??? ?? ??????????? ????????????? ????? ?????? ???????????, ?? ????????? ???????? ??? ??????? ??? ???? ???????????? ??????????? ??? ???????????, ???????? ????????? ??????????????, ????? ???????? ?????????????????? ????????? ??? ?????? ?????????? ????? ??? ???????? ???????????.

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

???? ?????? ??? ?? ??????????????? ??? ????? ??? ?????? ??????????, ?? ??? ?????? ?? ?????? ?????????? ?? ???????? ????????????? ?? ???????? ?? ??????????? ??? ?????-?????????? ???? ?? ????????????????? ??? ????? ??????? ???? ???? ???????????? ????? ??????? ??? ?????????? ???????????????.

?????: ???????? ????????? ????????????? ??? ???? ????????? ????????? ?????? ???? ????????? ?????????? ?????? ????????? ????, ????? ??????????? ????? ??????? ?? ???? ?????? ???? ????? ?????????? ?????????, ???????? ????????????????? ??? ???????? ????????.