. 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