Evaluation of some oxygen, sulfur, and selenium substituted ninhydrin analogues, nitrophenylninhydrin and benzo[f]furoninhydrin

Six ninhydrin analogues containing oxygen, sulfur, and selenium substituents at the C-5 position, 5-(4-nitrophenyl)ninhydrin, and benzo[f]furoninhydrin were evaluated as fingerprint development reagents. The analogues all showed good fingerprint color development but were not superior to ninhydrin in this respect. The benzo[f]furoninhydrin complex was strongly luminescent at room temperature following zinc complexation, while the remaining analogues required cooling to -196 degrees C to produce optimum luminescence. The benzo[f]furo, nitrophenyl, and methyl selenide analogues showed the best potential as fingerprint reagents with the benzo[f]furo analogue comparing favorably with DFO.     

A petro-formula and its world: calculating profits,labour and production in the assembling of Anglo-Iranian oil

Abstract

The paper explores how the calculative work of three different formulas shaped the history of oil in Iran in the first half of the twentieth century. British investors, Iranian government officials, oil workers and other actors battled over the construction and employment of a formula during the course of three different but interconnected disputes over oil profits, labour and production rates. Opening up the dynamics of a petroleum formula exposes how, on each occasion, certain political possibilities were opened or closed in the co-assembling of the Iranian state and Anglo-Iranian Oil Company. Scholarship on oil and Iran has not been able to account for the kinds of non-human actors, tools and machinery involved in the building of such a large-scale political project as an oil industry. Thus the paper draws on the current research on formulas and markets in science and technology studies but takes a different direction by looking at their political construction in the resolution of not just financial and economic problems, but social and political ones.