|
2016?1'5???27???
é??????????¨??????????o·?????1?????¤é???????????è????§????????¤??a???????????-????????????????????????????¤§è|??¨?è?2??-??????è????§??a??????é????????è?2??-???è?2????????'é?????????§??????a???é??è§??±o?????????????????????è???????|?????????????????????é????o?3??oo???è?2??-???é??????????-???è???·??????????????§???????é????????è?2??-???é??????????????????¤§????????????é????§???????????????????????o??¤??¨??a?????????é???????-?????????è§????????????????????§?é???????????é?¨é?? é??????????¨??????é????? ????'?????????????é?2è?¤?1?????-?????????????è?±???????????????????????????
é?????????????????é????§??o???
è?2???????§? é???????????é?¨é??
 ???????????¨???????°'?¨2 é??????????¨??????é???????§???é?2è?¤??????????°?é?????é????????é???????-?????????è3a???é???±???????è§???????è??????????¨??§??????
?????·???????????????è?2?????????????·????èa???????????????????????'??????????é??????¤????????????????è???????|????????????????????????é??????¨??o???????è?¨??????è¨?è??????????|?????????é¤?????????§????????????è3a???????????????????o·????????±é????????é?????????????a??1???????????????è|???aé??é???±???????????????|??????????'???a????????????é?????????????§??????
????????§???????±3??????é????§???????????????????±3????????????????????|??????????'????????????2???????¤??????a?????¨?????????????????1???????'??????¤?????|????????·è??é?????é-????é????a????????????????????±?????aé??????????????????????|???????????????????'??????????????¨?é?????????????|?oo???????????±é???????°??a????????§????????????????????¨??????é??????????a??????????????¨??§?????o?????§?????????é???????a???????¤§??o?o???¤???????o|?????????è-°è??????????|????????????
????±3??????????????|??????????'??????????é??????????°???????????|?????°??a?????'??????????????????????????????????±3????2??±3?????¨???????????¨??????èa???????????????????????????¨???????????¨??§????¤????????????????
?o???2?????????è?|???
?????¨?????°???????'?????o|???????????§?????????????o|?????-????o|???é??????o|???????'????????????????????±3???????????????????'??±3??????é?????????????????90 % ?2??±3???????????????95 % ?2??±3????????????????'??±3??????????'??±3?????????????????a??????10 é????????????????????????????3???????????|??????????????????????????????????'??????????é???????????????????????????±3?????-?????????????????|?????|????????¨??¨è¨??????????é???????a???????¤§??o?o???¤???????-??????§???????????????é??è|??????1??2??????????????|?????????????????????????????°é????a????????¨??????????'????????????|??????????????????????'???§????±3 0.35 ppm ??¨??a????o????????2??±3 0.2 ppm ????????????????????????????????????????·?????'?????????¤?????-?3????è§???¨ ICP-MS???èa??°???????????????o???è3aé????????è¨??????§???????-|??????????'??????????é???????????é?¨??????è§???¨ HPLC???é??é????2????????-????????°???????????????- ICP-MS ?3???§è???????|????????????
?????????????????????????????????é????§????-????????????????è????¨??a???????????????????????-????????·??¨??3??·????????1????????3??°??????è??è?|é¨?????????????????????|??????????????????????????????????????????è3a??????????o|???????????????????????|??????é?????????????????????????????é????????????????????????????????????3???§???????????|??????????????¨??§???è?|é¨???¤???????????|????????¤????¤§????????°??a????????¨?????a??????????????????????????§??????
??????è??è?|é¨?????????????é???????|???????????????é?????????????¤??????é????§?????o??????????????¨?????§?????????????????a?????????????????????????????¨???è?2???????§????é??è|???a??-?????§??????
 ??????????????§?????|??????è????? ????????????????????????????????¨???????o???????????????1??2?????????????1?????§???????????????????????????????????????????????oo???????o·????????????é????§???é??????????????????????????????????????????????????????????????é????§?????¨????????|???????????¨??§???????????? |