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. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: Anal Chem. 2010 Jan 1;82(1):343–352. doi: 10.1021/ac902038d

Table 1.

Emitted-intensity changes at 660 nm from a single MSPRS during substrate interaction with a GOx-functionalized surface (see Figure 4a).

substrates
(100mM in PBS)		 L-Glu
(reference)		 2Do-Glu D-Man D-Glu
Ibaseline
(counts/s)		 22757 22725 22746 22737
Isubstrate
(counts/s)		 22236 22190 22168 21974
signal (Ibaseline–Isubstrate)
(counts/s)		 521 535 579 763
noise
(counts/s)		 25 9 16 20
S/N 21 (13.2 dB) 57 (17.5 dB) 36 (15.5 dB) 37 (15.7 dB)
Ssubstrate–SL-Glu
(counts/s)		 0 14 58 242
relative rate ± error 0.00 ± 0% 0.06 ± 65% 0.24 ± 28% 1.00 ± 8%