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L—半胱氨酸与铁镍锌铅离子配位反应的热力学 被引量：2

THERMODYNAMICS OF THE COORDINATION REACTIONS OF L-CYSTEINE WITH Fe Ni Zn AND Pb IONS
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摘要 L—半胱氨酸（L—Cys）是蛋白质的降解产物之一,在体内除参与蛋白质的合成外,还参与毒物的解毒过程。本文用pH电位滴定法测定L—Cys同Fe2+、Ni2+、Zn2+、Pb2+形成配合物的稳定常数,以温度系数法获得配位反应的焓变,根据所得的热力学参数,对配位反应的推动力和配合物的结构进行讨论,并进一步用红外光谱和电子光谱对Pb2+、Ni2+两体系所得的结果予以证实。 The free energy, enthalpy and entropy changes for the formation of coordination compounds of L—cysteine with Fe, Ni, Zn and Pb ions have been determined. These results are used to discuss driving force of the coordination reactions and structure of the coordination compounds.
作者 郭德威 樊春梅 米亚娴 刘少永
机构地区 南开大学化学系 天津劳动卫生研究所 石油大学
出处 《化学研究与应用》 CAS CSCD 1993年第1期75-78,共4页 Chemical Research and Application
关键词 半胱氨酸 络合物 配位 铁 镍 铅 L—Cysteine Coordination compounds Thermodynamics
分类号 O614.81 [理学—无机化学]
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  • 1王永前,赵连城.高温形状记忆合金研究进展[J].功能材料,1995,26(4):377-379. 被引量：20
  • 2褚幼义.形状记忆合金在医学上应用研究的新动向[J].医用生物力学,1995,10(2):1-3. 被引量：4
  • 3TONG Shan-shan, JIA Qiong, SONG Nai-zong, et al. De- termination of gold ( Ⅲ) and palladium ( Ⅱ) in mine samples by cloud point extraction preconcentration cou- pled with flame atomic absorption spectrometry [ J ]. Mi- crochim. Acta ,2011,172( 1 ) :95-102.
  • 4BORKOWSKA-BURNECKA J,JAKUBIEL M ,ZYRNICKI W. Cloud point extraction as sample preparation proce- dure prior to multielemental analysis by inductively cou- pled plasma optical emission spectrometry [ J ]. Chem. Anal. ,2008,53:335-346.
  • 5WATANABE H,TANAKA H. A nonionic surfactant as new solvent for liquid-liquid-extraction of zinc (Ⅱ ) with 1 - (2-pyridylazo) -2-napthol [ J ]. Talanta, 1978,25 ( 10 ) : 585-589.
  • 6SILVA E L, ROLDAN P S. Simultaneous flow injection preconeentration of lead and cadmium using cloud point extraction and determination by atomic absorption spec- trometry [ J ]. J. Hazard. Mater. , 2009,161 ( 1 ) : 142-147.
  • 7SILVA S G, OLIVEIRA P V, NOBREGA J A Z,et al. Clot:d point extraction to avoid interferences by structured background on nickel determination in plant materials by FAAS[ J]. Anal. Methods ,2009,1:68-70.
  • 8GIOKAS D L,EKSPERIANDOVA L P,BLANK A B Z,et al. Comparison and evaluation of cloud point extraction and low-temperature directed crystallization as preconeen-tration tools for the determination of trace elements in en- vironmental samples [ J ]. Anal. Chim. Acta, 2004, 505 (1) :51-58.
  • 9BEZERRA M A,BRUNS R E,FERREIRA S L C. Statis- tical design-principal component analysis optimization of a multiple response procedure using cloud point extraction and simultaneous determination of metals by ICP OES [ J ]. Anal. Chim. Acta,2006,580 ( 2 ) :251-257.
  • 10SILVA E L,ROLDAN P S,GINE M F. Simultaneous pre- concentration of copper,zinc ,cadmium ,and niekel in wa- ter samples by cloud point extraction using 4-(2-pyridy- lazo)-resoreinol and their determination by inductively coupled plasma optic emission spectrometry [ J ]. J. Haz- ard. Mater. ,2009,171(1/3) :1 133-1 138.

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化学研究与应用
1993年 第1期

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