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首页> 外文期刊>Journal of Imaging Science and Technology >The Interaction between Photographic Gelatins and Chemical Sensitizers
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The Interaction between Photographic Gelatins and Chemical Sensitizers

机译：摄影明胶和化学增敏剂之间的相互作用

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摘要

The interaction between two kinds of photographic gelatin and chemical sensitizers was studied by X-ray Photoelectron Spectroscopy After the gelatin samples were immersed into the chloroauric acid solution fOr 5 min, methionine and methionine sulfoxide in gelatins were oxidized to methionine sulfone, reducing most parts of An3+ to Au which was coordinated by gelatin macromolecule. According to the ratio of Au3+ to Au in gelatins, it is shown that the reducing power of Rousselot gelatin is stronger than that of Baotou gelatin. When sodium thiosulfate was added to gelatins, methionine sulfoxide was reduced to methionine. Sodium thiosulfate, which is a reductant stronger than both methionine and methionine sulfone, could coexist steadily with methionine and methionine sulfone in the gelatin. Two kinds of photographic gelatins added with sodium thiosulfate could reduce Au3+ to colloid gold. In this redox reaction, the main reductant is sodium thiosulfate, but not methionine in the gelatin. The addition of sodium thiosulfate enhanced the reducing power of the photographic gelatin.
机译：用X射线光电子能谱研究了两种照相明胶与化学增敏剂之间的相互作用。将明胶样品浸入氯金酸溶液中5分钟后，明胶中的蛋氨酸和蛋氨酸亚砜被氧化成蛋氨酸砜，还原了大部分蛋氨酸。 An3 +对Au的作用是由明胶大分子协调的。根据明胶中Au3 + / Au的比例，可知Rousselot明胶的还原能力强于包头明胶。当将硫代硫酸钠添加到明胶中时，蛋氨酸亚砜被还原为蛋氨酸。硫代硫酸钠是一种比甲硫氨酸和甲硫氨酸砜都强的还原剂，可以与明胶中的甲硫氨酸和甲硫氨酸砜稳定地共存。两种照相明胶加硫代硫酸钠均可将Au3 +还原为胶体金。在该氧化还原反应中，主要的还原剂是硫代硫酸钠，而不是明胶中的蛋氨酸。硫代硫酸钠的加入增强了照相明胶的还原能力。

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