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. Author manuscript; available in PMC: 2018 May 16.
Published in final edited form as: Anal Chem. 2017 Apr 28;89(10):5605–5611. doi: 10.1021/acs.analchem.7b00785

Table 3.

Comparison of dopamine detection at CNTYMEs before/after in tissue foulingα

Initial Ip,a/nA Ip,a after Fouling/nA Ip,a Ratio(Post/Pre Fouling)/% ΔEp after Fouling/V Background Current Ratio(Post/Pre Fouling)/%
Unmodified CNTYME (n=6) 5.3 ± 0.5 0.95 ± 0.05 18 ± 3 0.923 ± 0.003 103 ± 4
O2 Plasma Etched CNTYME (n=6) 15 ± 2 4.5 ± 0.2**** 30 ± 3* 0.86 ± 0.01** 99 ± 3
Anti-static gun treated CNTYME (n=6) 21 ± 3 5.3 ± 0.4**** 25 ± 3 0.860 ± 0.006**** 96 ± 5
α

Oxidation current before and after 2H fouling, the Ip,a post/pre-fouling ratio, ΔEp value after fouling, and background current post/pre-fouling ratio. Significantly different than unmodified:

*

paired t-test, p ≤ 0.05,

**

paired t-test, p ≤ 0.01,

****

paired t-test, p ≤ 0.0001.