کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
600444 | 1454303 | 2013 | 6 صفحه PDF | دانلود رایگان |
Directly electrochemically reduced graphene oxide (ERGO) was obtained by potentiostatic reduction of exfoliated graphene oxide sheets on a glassy carbon electrode (GCE). The ERGO-modified electrode (ERGO/GCE) displayed greatly improved voltammetric response to the amino acids l-tryptophane (Trp) and l-tyrosine (Tyr) compared with the chemically reduced graphene oxide (CRGO) modified electrode. The ERGO/GCE separated the voltammetric responses of ascorbic acid (AA) and uric acid (UA) from that of Trp and Tyr. It eliminated the interference from AA and UA. The electrode showed good reproducibility and was used to determine Trp and Tyr with linear ranges of 0.2–40.0 μmol L−1and 0.5–80.0 μmol L−1, detection limits of 0.1 μmol L−1 and 0.2 μmol L−1, respectively.
.Figure optionsDownload as PowerPoint slideHighlights
► Electrochemically reduced graphene oxide (ERGO) was prepared by potentiostatic method.
► ERGO have highly catalytic activity towards the l-tryptophane and l-tyrosine.
► ERGO was used for determination of l-tryptophane and l-tyrosine.
Journal: Colloids and Surfaces B: Biointerfaces - Volume 101, 1 January 2013, Pages 183–188