A solution containing citric acid (0.lM)
and ferric chloride (0.1M) was
irradiated by bright sunlight for 3 hr. The products of the
photochemical reaction were examined by means of paper ionophoresis using 0.05M sodium chloride as the
electrolyte. Acetone-dicarboxylic acid and acetoacetic acid separated readily
and were identified by their positions on the paper and by their red-violet
reactions on contact with a solution of ferric chloride sprayed onto the paper.
The ferrous iron
simultaneously produced during the photochemical reaction also separated during
ionophoresis and was identified on the paper.
The existence of an
anionic citrate-ferric iron complex was demonstrated by paper ionophoresis.
Study on the Photochemical Reaction Products of Biphenyl with Nox and Their Mutagenic Potency in Salmonella typhimurium TA 98 and TA 98 NR (Proceedings of the 12 th Symposium on Environmental Pollutants and Toxicology) (Regular Presentations)