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＜departmental bulletin paper＞
Studies on Electrochemical Behaviors of Cysteine and Cystine with Cathodic Stripping Voltammetry

Creator
Creator Name
坂根, 康秀
Sakane, Yasuhide
Affiliation
Affiliation Name
九州大学農学部食品分析学教室
Laboratory of Food Analysis, Faculty of Agriculture, Kyushu University
Author PID
K001554
Creator Name
松本, 清
Matsumoto, Kiyoshi
Affiliation
Affiliation Name
九州大学農学部食品分析学教室
Laboratory of Food Analysis, Faculty of Agriculture, Kyushu University
Creator Name
筬島, 豊
Osajima, Yutaka
Affiliation
Affiliation Name
九州大学農学部食品分析学教室
Laboratory of Food Analysis, Faculty of Agriculture, Kyushu University
Language
Japanese
Publisher
九州大學農學部
Faculty of Agriculture, Kyushu University
Date
1981-03
Source Title
Science bulletin of the Faculty of Agriculture, Kyushu University
Vol
35
Issue
1/2
First Page
37
Last Page
44
Publication Type
Version of Record
Access Rights
open access
JaLC DOI
https://doi.org/10.15017/22268
Related DOI
九州大學農學部學藝雜誌 || 35(1/2) || p37-44
Science bulletin of the Faculty of Agriculture, Kyushu University || 35(1/2) || p37-44
http://www.agr.kyushu-u.ac.jp/
Related URI
九州大學農學部學藝雜誌 || 35(1/2) || p37-44
Science bulletin of the Faculty of Agriculture, Kyushu University || 35(1/2) || p37-44
http://www.agr.kyushu-u.ac.jp/
Relation
九州大學農學部學藝雜誌 || 35(1/2) || p37-44
Science bulletin of the Faculty of Agriculture, Kyushu University || 35(1/2) || p37-44
http://www.agr.kyushu-u.ac.jp/

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Details

Record ID
22268
Peer-Reviewed
Unrefereed
Subject Terms
液出波ポーラログラフ法
システイン
シスチン
電気化学的挙動
ボルタモグラム
還元波
電極反応
ISSN
0368-6264
NCID
AN0005519X
Notes
The electrochemical behaviors and the quantitative analyses of cysteine (RSH) and cystine (RSSR) have been studied with cathodic stripping voltammetry (c.s.v.). The electrode reactions of RSH and RSSR were rather complicated and each voltammogram had two kinds of reduction waves (RSH: first wave; E.=-0.425V, pH 6.0, second wave; Ep=-0.475V, pH 6.0. RSSR: first wage; Ep=-0.455V, pH 6.0, second wave; Ep=-0.97V, pH 6.0). Their electrode reaction schemes were discussed. Concentration effects of c.s.v. were observed with RSH second wave and RSSR first wave. Although these two waves behave adsorptively, RSH second wave didn't have simple saturation characteristic, which indicated the transition of adsorbed species at electrode surface. Furthermore, copper (II) was added to the solutions of RSH and RSSR, respectively, and the electrochemical behaviors of these copper-related waves were also investigated. It is possible to determine RSSR directly with c.s.v. On the other hand, it might be effective to determine RSH indirectly with copper-related wave.
システイン(RSH),シスチン(RSSR)の電気化学的挙動,および溶出波ポーラログラフ法による定量を検討した.RSH,RSSR の電極反応は非常に複雑であり,それぞれのボルタモグラムには2種類の還元波が得られた.その電極反応は式(1)～(8)であると推定された.溶出波ポーラログラフ法による濃縮作用が認められるのはRSH の第2波(Ep=0.475V, pH6.0)とRSSR の第1披(Ep=-0.455V,pH6.0)であった. これら2つの波は吸着的に挙動したが,RSH の第2波は単純な飽和特性を示さず,電極表面での吸着種の変化が示唆された.RSSR は溶出波ポーラログラフ法による直接近景が可能である.一方,RSH については直接定量より2価の銅との波を利用した間接定量が有効であることが判明した.
Created Date 2012.06.30
Modified Date 2022.11.11