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

???? ????? ??? ??? ???????? ??????, ???? ??? ?? ????? ????? ???? ??? ???????. ?????, ???? ?????? ???? "?????", ??? ????? ????? ?? ????? ?????? ????? ?????? ?????? ???. ????? ???? ?? ????? ???? ??????? ?????????. ?? ????? ???????? ????? ?????, ???? ???? ???? ????? ???????, ????? ?????? ?????? ?????? ??????. ?????? ?? ????? ??????? ?? ??? ???? ??????? ?? ?? ?????? ????? ????? ????? ?????.

??? ????? ???

???? ?????

??????????

???? ????? ???? ???? ??? ?????? ????? ????? ?????. ??? ???? ?????? ???? ????? ???? ????.

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

???? ????? ????? ?? ??? FAO ?-WHO ????? ???? ??? ?????, ???? ??? ???? ?????? ???? ??? ???? ????? ???? ???? ????? ???, ???? ????, ???? ????????, ?????? ????, ???? ????????, ?????, ????? ???????? ?????, ??????, ??????, ???, ???????? ??????? ?????? ?????? ???????.

?????2

?????????

??????? ?????????:

?? ?? ???? ???????? ?????? ???? (GB2760-1996), ???? ?????? ????? ????? ??????? ????? ????? ????? ??????. ???? ?????? ????? ????? ???? ????? ??????, ??????? ?????? ??? ?????, ?? ????? ?????? ?? ??? ?????? ??? ????? ????? ???? ?? ????, ???? ?? ????? ????? ????, ???? ?? ??? ????? ???? ??????? ?? ???? ??????. ??? ???? ?????? ??? ???? ?????, ??????? ????? ??? ????. ????? ????, ????? ??????, ?? ???? ???? ??? ???? ?? ????? ???????. ???? ????? ???? ???? ?? ????? ????? ?????? ??????? ??????? ???? ????? ????? ?????, ???? ???????, ???? ???????? ????? ?????.

??? ???:

????? ?? ???? ????? ????? ???.

????????:

???? ????? ???? ???? ?????? ???? ?? ????? ???. ?????? ??? ?????? ??? ????? ???? ???? ??? ???? ?? ?????? ?? ?????? ?????.

????????:

????? ?? ???? ????? ????? ????? ?????? ???? ?????, ????? ?????? ???? ???????? ?? ?????? ??? ????? ?????? ?????? ??? (?-90%) ????? ???. ???? ???, ???? ???? ???? ?? ????? ????? ??????? ???????????? ?? ???? ????? ???? ?????? ???????? ?? ??????? ?????.

?????? ?????? ???:

?????? ?? ???? ???? ???, ????? ?????? ????? ???? ??? ?-8% (???? ??? 6-7%) ????? ?????? ????? ??????? ?? ????? ???. ?? ???? ???? ??? ???? ????? ???? ?????????, ???? ????? ?? ????? ????? ???? ???? ?? ??????? ????? ???? ????? ???? ??.

????????:

????? ?????? ????? ??????, ??????? ???? ????? ?? ????? ?????? ?? ?'?. ????? ????? ?? ???? ????? ????? ?????? ?? ????? ??'? ??????? ???, ???? ?? ???? ????? ?? ????? ?????.

????? ??? ????:

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

?????:

???? ?????? ????? ????? ?? ?????? ??????, ???? ???? ??????? ?????? ??????? ?????? ????; ??? ???? ???????, ????? ?????? ??????? ??????, ?????? ????? ????, ????? ??????? ?????? ?????? ???? ?????.

???? ????

????? (????? ???):	90.0% ????
???????:	2.0% ???????
?????:	??????? 6.0%
??????:	??????? 6.0%
?????	1.0% ???????
?????? (15% 20°C):	200~3000mPa.s
PH:	6.0~7.5
????? ?????? ??????	30000/? ??? ?????
????? ????	40/100 ??? ???????
???? ???? (??? Pb):	20 ?????? ???? ???????
??????:	2 ?????? ???? ???????
????????:	?? ????