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. Author manuscript; available in PMC: 2019 Feb 1.
Published in final edited form as: Int J Mass Spectrom. 2016 Mar 8;403:15–26. doi: 10.1016/j.ijms.2016.02.003

EA2.

Cation and anion exchange column pre-cleaning procedures.

(1) Fill Teflon resin bottle with Biorad resin mixed with Milli-Q water.
(2) Shake mixture and let resin settle for 15 min
(3) Decant water
(4) Fill with Milli-Q water and shake thoroughly; let resin settle and decant water
(5) Repeat twice more with Milli-Q water
(6) Repeat with 1 M Hydrochloric acid (quartz distilled)
(7) Repeat with 6 M Hydrochloric acid (quartz distilled)
(8) Repeat with 6 M Hydrochloric acid (quartz distilled)
(9) Repeat with 1 M Hydrochloric acid (quartz distilled)
(10) Repeat 3 times with Milli-Q water
(11) Repeat with 1 M Nitric acid (quartz distilled)
(12) Repeat with 6 M Nitric acid (quartz distilled)
(13) Repeat with 6 M Nitric acid (quartz distilled)
(14) Repeat with 1 M Nitric acid (quartz distilled)
(15) Repeat 3 times with Milli-Q water