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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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What’s in your Dubai chocolate? Nuclear scientists test pistachios for toxins
For the uninitiated, Dubai chocolate is a candy bar filled with pistachio and tahini cream and crispy pastry recently popularized by social media influencers. While it’s easy to dismiss as a viral craze now past its peak, the nutty green confection has spiked global pistachio demand, and growers and processors are ramping up production. That means more pistachios need to be tested for aflatoxins—a byproduct of a common crop mold.
Wallace Davis, Jr.
Nuclear Science and Engineering | Volume 14 | Number 2 | October 1962 | Pages 174-178
Technical Paper | doi.org/10.13182/NSE62-A28117
Articles are hosted by Taylor and Francis Online.
Some of the published data on the extraction of nitric acid from aqueous solutions, containing ≦5 M acid, by tributyl phosphate-hydrocarbon diluent solutions were tested for their agreement with a mathematical description presented in Part 1. In all cases the agreement of the literature data with this description ranged from adequate to very good, thereby adding support to the interpretation of the parameters of the equation in terms of the equilibrium constant, , for the extraction reaction and the two activity coefficients y′T and . The form of the mathematics suggests that TBP and TBP·H2O are indistinguishable in their reaction with HNO3 and that y′T is an approximate mean molar activity coefficient of these two in the water-saturated system; similarly, is an approximate mean molar activity coefficient of the two species TBP·HNO3 and TBP·HNO3H2O. The quantity has a value of ∼1.5 in molar units for diluent-free TBP; its extrapolated value in the pure diluent Amsco 125-82, or odorless kerosene, is ∼0.23, while its value in n-hexane is ∼0.27.
