??? ??????

???????? 70%

?????? ????

15 ?????? 2020

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

15 ?????? 2020

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

1 ????? 2022

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

GB 7658--2007

??????

???????

?????

????

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

?????

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

69.0-71.0

70.31

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

≥70.0

76.5

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

5.0-7.5

5.9

??????? ??????? (2020)

1.285-1.315

1.302

????????%

≤0.21

0.03

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

≤8.0

6.12

??????? ??? ??????%

≤0.10

0.04

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

≤0.0005

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

≤0.0001

?? (??? ???? ??)?%

≤0.0002

?????? (????? ??? Cl)??

≤0.001

??????? (????? ??? SO4)??

≤0.005

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

≤0.0002

???????

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

???????

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