ICP-MS???????

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ICP-MS???????
??????(?)

• ????? ?????
• ??2011112005

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??ICP-MS????

• ICP-MS (Inductively coupled plasma mass
  spectrometry )?????????? ICP-MS??????????????(ICP)
  ,????????????ICP ????,??????????????????,?????????
  ?,????????????,???????,?????????????,?????????????
  ?????????????,??????????????????????????????????,?
  ?????????????,???????????10000k???????????????????
  ???????????????,???????????,??????1L/min??????????
  ???,???????,???????????????,??????10-15L/min?

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• ????????????????????????????,??????????,????????1m
  l/min,????????????
• ICP-MS?ICP??,????????????????????????,???????????
  ??

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??ICP-MS?????

• ????ICP??,???????????????????,ICP?????1KW??,??????
  15L/min,????????????1L/min,?????????????????????1m
  l/min?

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?? ICP-MS?????
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?????????(????)?????????? ???????????
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???(?????)??????????(????),??????????????,????????
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???(?????)????????(????),??????????????(??) ??????
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????(????)????????
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?????????
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???? ICP-MS
?? ?????? ?????? ?????? ????? ???????? ????(???)
?????? ???????? ?? ?????
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??????????
?? ?? ??1
GFAAS ICP-OES ICP-OES ICP-MS ???
ppt ppb ppb ppq-ppt ???? 2-3
4-6 4-6 9 ??
Moderate Many Many Few ?? Slow
Slow Fast Fast ??????
Poor Good Good Excellent ???
No Yes Yes Yes ????
No No Yes
Yes ????? uL mL mL uL or
mL ????
????
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??ICP-MS??????????
(1 ) ??????

• ??????????????????????????????????????????????????
  ???,???????????,??????????????????????????????????
  ????????????????????????????,???????????
• ?????????????????????????????????????????????

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?????????
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• ?????,?????1218 mm,?200 mm???????????????,???????
  ???????????,??????????????????????????????????????
  ???????????,????????eV??????????????????????????
  (?)??????????????????????????????????????????,????
  ??????????????????????(?????)???????????????????
  ??????????????????????????????????????????????????
  ?????????????,??????????????????????????????????
  ???????????????????????????????????,???25
  mm????????RF???????,??????????????????????????????
  ??????????

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????????
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• ??????????????????????????????????????,???U?V?????
  ???????????,?????,?????,?????????????????,?????1
  80????????????????????????,?????????????????????
  ?????????????????????,?????????????,??????m/z???
  ???????????????????????,?????????????,?????????
  ??????????,?????,???????????????????????????????
  ???????????,

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??ICP-MS???????????
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??????????????
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ICP-MS???????
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???????????
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???????????
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??ICP-MS??????????????
???????
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??ICP-MS?????
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ELAN Background Levels

• Purpose A scan of the mass range provides
• information on the following
• l Purity of deionizedwater
• l Purity of argon
• l Background ion intensities
• l Contamination in sample introduction system
• l Contamination on cones

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??ICP-MS?????

• ICP-MS???

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ICP-MS ?????????
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Components of theELAN ICP-MSSystem

• l Sample Introduction System
• l Ionization Source
• l Ion Extraction System
• l Ion Focusing System
• l Mass Filter
• l Ion Detection System
• l Control Software

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• Systematic Errors