Measurement of the Ge(d,n)As cross section from 2.1 MeV to 10 MeV.

This work reports experimental Ge(d,n)As cross sections producing Arsenic-71 (t = 65.3 h, 28% β), a potentially useful diagnostic radionuclide. Target stacks containing two Ge foils, a Ni monitor foil, and an Al degrader were irradiated with 5.

Cross-sections for Sc, Sc, and Sc from two heavy ion reactions.

Two different heavy ion reactions were used to produce Sc (t = 3.891 h), Sc (t = 4.042 h), and Sc (t = 58.

Enhancing the Thermal Mineralization of Perfluorooctanesulfonate on Granular Activated Carbon Using Alkali and Alkaline-Earth Metal Additives.

Thermal treatment has emerged as a promising approach for either the end-of-life treatment or regeneration of granular activated carbon (GAC) contaminated with per- and polyfluoroalkyl substances (PFAS). However, its effectiveness has been limited by the requirement for high temperatures, the generation of products of incomplete destruction, and the necessity to scrub HF in the flue gas. This study investigates the use of common alkali and alkaline-earth metal additives to enhance the mineralization of perfluorooctanesulfonate (PFOS) adsorbed onto GAC.

Validation of a low-cost lead hazard screening kit for the home environment.

The main sources of lead exposure for children occur in the home environment, yet no low-cost analytical methods exist to screen homes for lead hazards. Previously, an inexpensive (~$20), quantitative lead screening kit was developed in which residents collect soil, paint, and dust samples that are returned to a laboratory for lead analysis using X-ray fluorescence spectroscopy (XRF). This screening kit was initially validated in 2020; it was determined that in situ and ex situ XRF lead measurements on the same samples exhibited strong sensitivity, specificity, and accuracy.

Per- and Polyfluoroalkyl Substances in Canadian Fast Food Packaging.

A suite of analytical techniques was used to obtain a comprehensive picture of per- and polyfluoroalkyl substances (PFAS) in selected Canadian food packaging used for fast foods ( = 42). Particle-induced gamma ray emission spectroscopy revealed that 55% of the samples contained <3580, 19% contained 3580-10 800, and 26% > 10 800 μg F/m. The highest total F (1 010 000-1 300 000 μg F/m) was measured in molded "compostable" bowls.