Electronic absorption spectrum of nitrate ion and boron trihalides

Evaluated kinetic and photochemical data for atmospheric chemistry: Volume II – gas phase reactions of organic species

“…They are also in reasonable agreement with the absorption spectrum reported by and with the cross-sections reported by Maria et al (1973). The results of Taylor et al (1980) are consistently higher than the values from the other studies Rattigan et al, 1992;Talukar et al, 1997;Maria et al, 1973), by as much as a factor of two in the region 290 nm to 330 nm.…”

High-resolution, vacuum-ultraviolet absorption spectrum of boron trifluoride

“…3, the cross sections are small over the range of the measurements, 10 −20 cm 2 at 130 nm falling to less than 10 −21 cm 2 from 160 nm to 210 nm. This figure also shows the comparison of our data with the previous photoabsorption measurements of Maria, et al, 14 Hagenow, et al, 15 and Suto, et al 16 The data of Maria, et al cover a limited wavelength range and show some overlap with our data in the region of 155 nm to 160 nm. Electron energy loss data by Durrant, et al 17 show a broad feature at around 155 nm.…”

Analysis of ash suspension obtained from Piper aduncum that claimed to cure cancer in Papua New Guinea

“…When the qualitative analysis was done using silver nitrate test [25], only curdy white precipitate was formed which dissolved completely in aqueous ammonia indicating the presence of only chloride and not bromide and iodide. The UV-visible spectra of the clear salt solutions indicated the absence of nitrate ion because no bands were observed at the expected regions of 300 and 190 nm, the latter one being assigned to π* ← π transition of the nitrate group [26]. To support further, when the solids were heated in a dry test tube over Bunsen flame, no reddish brown fumes due to nitrogen dioxide were noticed [25] (Equation 1).…”