Unveiling the Sources of Chromium in Pictorialist Photographs: Gum-Dichromate Process or Paper Sizing?

Anna Vila , Silvia A Centeno, Nora W Kennedy, Lisa Barro

Research output: Contribution to journalJournal articleResearchpeer-review


For this issue of Hand Papermaking devoted to paper sizing, we offer a review and
extension of pertinent results obtained in our investigations of the gum-dichromate
photographic process, commonly known as the gum-bichromate process.1 We have
published three articles to date on our findings; this article is derived mainly from
“Understanding the Gum Dichromate Processes in Pictorialist Photographs:
A Literature Review and Technical Study,” which appeared in Studies in
Conservation in 2013.
Original languageEnglish
JournalHand Papermaking
Issue number2
Pages (from-to)24-29
Number of pages5
Publication statusPublished - 2015


  • sizing, paper, photography

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