影像科学与光化学 ›› 1998, Vol. 16 ›› Issue (4): 314-320.DOI: 10.7517/j.issn.1674-0475.1998.04.314

• 研究论文 • 上一篇    下一篇

照相明胶中硫存在形态的XPS研究

张宜恒, 李洁, 闫天堂, 俞书勤, 庄思永, 彭必先   

  1. 中国科学技术大学应用化学系, 化学物理系,合肥 230026
  • 收稿日期:1997-12-15 修回日期:1998-03-31 出版日期:1998-11-20 发布日期:1998-11-20
  • 通讯作者: 张宜恒
  • 基金资助:

    国家自然科学基金资助项目(批准号:29406049)

STUDY ON THE CHEMICAL STATE OF SULFUR IN PHOTOGRAPHIC GELATIN BY XPS

ZHANG Yiheng, LI Jie, YAN Tiantang, YU Shuqin, ZHUANG Siyong, PENG Bixian   

  1. Department of Applied Chemistry, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China
  • Received:1997-12-15 Revised:1998-03-31 Online:1998-11-20 Published:1998-11-20

摘要: 本文采用X射线光电子能谱技术,研究了国内外典型的两种照相明胶的空白样品、掺杂铁(Ⅲ)的样品中硫元素的存在形态。硫在明胶中主要以三种化学形态存在:蛋氨酸砜中的 基团,蛋氨酸亚砜中的 基团,蛋氨酸中的-S-基团。三种化学形态间的相对含量基本上反应出蛋氨酸及其两种氧化产物之间的相对比例。在我们的实验条件下,外来三价铁,引发部分蛋氨酸砜被还原为蛋氨酸亚砜,与此同时,明胶中的-CH2-基团部分氧化为 基团。

关键词: 照相明胶, 蛋氨酸, 蛋氨酸亚砜, 蛋氨酸砜, X射线光电子能谱

Abstract: In this paper, the chemical state of element sulfur in undoped, doped ferric ion samples of two typical photographic gelatins were studied by X-ray photoelectron spectroscopy. Sulfur of gelatin macromolecule contains three chemical states: group of Metson group of Metsox and-S-of Met. The ratio of these three chemical states reflects the relative amount of Metson, Metsox, Met in gelatin to a certain extent. Under our experimental conditions, the doped ferric ion induce the Metson to be reduced partly to Metsox.Simultaneously -CH2- groups of gelatin are oxidized partly to groups.

Key words: photographic gelatin, Met, Metsox, Metson, X-ray photoelectron spectrum