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

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

???? ????? ?? ????? ??? ??????? ??? ????? ???? ??? ???? ?? ??????? ???? ??? ???? ???? ????? ??, ???? ?????? ???? ?? ???? ??? ?? ???? ???? ?? ???? ????? ??? ?? ??? ?????, ?? ??? ???? ?? ?????? ???????????? ??????????? ??? ???? ??? ???? ???? ?? ?? ??? ???? ???? ????, ??? ?????? ??? ????? ?? ???? ???? ??? ???? ????? ???? ???? ????? ??????? ?? ??????? ??? ????? ????? ?? ???? ????? ???

?????? ??????? ??? FAO ??? WHO ????? ??-?????????? ???? ??? ???? ?????? ???? ??? ??, ??? ?? ?? ?? ?? ???? ?? ???? ??????? ????? ?? ??? ??????????, ?????? ???? ????, ???? ????, ???? ??????, ???? ???, ????, ???-??? ??? ??? ???????, ??? ???? ?????, ????, ??????, ??????? ?????? ??? ??????? ????? ?? ?????? ?????? ???? ????? ??? '?? ????? ????? ???

????2

?????????

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

??? ???????? ?? ???????? ??????? (GB2760-1996) ?? ??????, ?????? ??????? ??? ?????? ???? ???????? ?? ?????? ???-??? ?????? ???? ????? ?? ???? ??? ?????? ??????? ??? ?????? ?? ???? ?? ???, ????? ??? ??? ??? ??????? ???? ????? ?? ???? ??, ?? ??? ?? ??????? ???? ??? ???? ??? ???? ?? ?????? ??? ??? ???? ??, ??? ??????? ?? ??????? ???? ????? ?? ???? ??, ??? ?? ????? ?? ???? ????? ?? ???? ?? ??? ?????? ???? ??? ???? ??? ???? ????? ????? ??????? ????? ?? ??? ????, ??????? ??? ???? ???? ???? ??? ???? ??????? ???? ???? ????? ??? ?????? ??? ????, ????????? ??? ??????????? ?? ??? '??, ?? ??????? ?? ??????? ???? ??? ????? ?? ???? ??? ?????? ??????? ??? ??? ??????? ???? ????, ?????? ????, ?????? ?? ???? ??? ????? ???? ???? ???? ??????? ?????? ?? ??? ??????? ??????? ???? ???? ?? ????? ?? ???? ???

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

?????:

?????? ??????? ??? ???? ?? ???? ??? ???? ?? ????? ??????? ???? ????? ?? ???? ??? ??? ????? ??????? '?? ???? ????? ??? ??????? ?? ??????? ???? ??? ????? ?? ???? ???

??? ????:

?????? ??????? ??? ???? ??? ????? ????, ?????? ??? ?????? ??? ??? ???? ?? ?????? ?? ??? ????? ????? ???? ??? ??? ???? ?? ?????? ???? ??? ??????? ?????? (???? 90%) ??? ???? ?????? ????? ??? ???, ?????? ??????? ?? ???????????? ??? ??? ??????????? ??? ??????? ?????? ????? ????? ?? ??????? ???? ???? ????? ???? ?? ???? ???

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

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

????:

??? ??? ??????? ?????? ??? ?????, ???? ???? ??? ??? ?????? ????????? ?? ???? ?????? ??? ?????? ??????? ??? ??? ??? ??? ???? ??? ???? ??????? ?????? ??? ?????? ?? ???? ??, ???? ???? ????? ?? ???? ??, ??? ????? ?? ??????? ???? ????? ?? ???? ???

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

???? ???????????? ????? ????? ??, ??? ??? ??????? ??????? ??? ??? ?????? ??????? ??? ??? ?????? ????? ?? ??? ?? ??? ?????? ???? ???? ?? ???? ??? ???? ?????? ???? ???? ??????? ???? ???? ?? ????, ??????, ????? ????????? ??? ????? ?? ???????? ??? ??????????? ??? ??? ?????? ?? ???? ?? ??? ???? ???????? ?? ??????? ?? ?????? ??? ??? ???? ??? ??????? ??????? ??? ?????? ???? ??? ???? ??????? ???????? ??? ?????

???:

?????? ??????? ??? ??? ??? ???, ???? ??? ??? ?????? ???? ?? ????? ?? ???? ?? ??? ?? ??? ??? ????? ?? ??? ??? ???? ??? ????? ????? ?? ???; ???? ????? ??? ???? ???????, ??? ???? ?????? ?? ??????? ???? ??? ???? ???????, ???? ?? ???? ??? ????, ?????? ??? ????? ????? ??? ??? ???? ??????? ??? ???? ?? ???? ??? ?????? ??? ?? ???? ????? ???

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

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