December 22, 2024, 10:18:13 PM
Forum Rules: Read This Before Posting


« previous next »
Pages: [1]   Go Down

Topic: stripping analysis question  (Read 8385 times)

0 Members and 1 Guest are viewing this topic.

Offline Abilio

  • Regular Member
  • ***
  • Posts: 17
  • Mole Snacks: +0/-0
  • Gender: Male
stripping analysis question
« on: September 18, 2007, 09:15:04 AM »
Why do you have to apply a deareation step before a stripping analysis on mercury film electrodes?

And, if you know, why this step is not necessary when you use bismuth film electrodes?
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27885
  • Mole Snacks: +1815/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: stripping analysis question
« Reply #1 on: September 18, 2007, 09:32:43 AM »
Why do you remove oxygen from solution in almost every polarographic/voltamperometric technique?
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Abilio

  • Regular Member
  • ***
  • Posts: 17
  • Mole Snacks: +0/-0
  • Gender: Male
Re: stripping analysis question
« Reply #2 on: September 20, 2007, 12:00:46 AM »
I think it's done to reduce the current associated with oxygen reduction... But if it is as i think, why BiFE protocols don't need deareation?
Logged

Offline Borek

  • Mr. pH
  • Administrator
  • Deity Member
  • *
  • Posts: 27885
  • Mole Snacks: +1815/-412
  • Gender: Male
  • I am known to be occasionally wrong.
    • Chembuddy
Re: stripping analysis question
« Reply #3 on: September 20, 2007, 03:02:02 AM »
Overpotential perhaps? Wild guess.
Logged
ChemBuddy chemical calculators - stoichiometry, pH, concentration, buffer preparation, titrations.info

Offline Abilio

  • Regular Member
  • ***
  • Posts: 17
  • Mole Snacks: +0/-0
  • Gender: Male
Re: stripping analysis question
« Reply #4 on: September 21, 2007, 11:01:50 PM »
Maybe... But i really want to know why  ::)
Logged
Pages: [1]   Go Up
« previous next »
Sponsored Links