Slangen P, Martinez C, Weber G, Lion Y
Appl Opt. 1993 Oct 20;32(30):6132-6. doi: 10.1364/AO.32.006132.
X-ray fluorescence was applied to the determination of the chromium-ion content in developed dichromated gelatin after exposure. It was found that the Cr(3+) ions irreversibly linked to the gelatin molecules do not exceed one half of the original concentration of the ions. A similar study was carried out on the hardening of dichromated gelatin during dark reaction: as long as the degree of hardening of the gelatin allowed the chromium ions to migrate out of the film during development, the final Cr(3+) content was less than or equal to one half the original concentration.
利用X射线荧光分析法测定曝光后显影的重铬酸盐明胶中的铬离子含量。结果发现，与明胶分子不可逆结合的Cr(3+)离子不超过离子原始浓度的一半。对重铬酸盐明胶在暗反应过程中的硬化情况进行了类似研究：只要明胶的硬化程度允许铬离子在显影过程中从膜中迁移出来，最终的Cr(3+)含量就小于或等于原始浓度的一半。
