Generation of correlated UV and visible rainbows

Basic UV/Visible Spectrophotometry

Determination of Sulfamethoxazole and Trimethoprim in Pharmaceuticals by Visible and UV Spectrophotometry

A method for the simultaneous determination of sulfamethoxazole (SMX) and trimethoprim (TMP), based on a direct determination of SMX after diazotization and coupling with 2-naphthol by visible spectrophotometry and an indirect determination of TMP in the UV region by difference was developed. By the suggested procedure, it was possible to analyze SMX and TMP in pharmaceutical preparations witho...

Determination of Sulfamethoxazole and Trimethoprim in Pharmaceuticals by Visible and UV Spectrophotometry

A method for the simultaneous determination of sulfamethoxazole (SMX) and trimethoprim (TMP), based on a direct determination of SMX after diazotization and coupling with 2-naphthol by visible spectrophotometry and an indirect determination of TMP in the UV region by difference was developed. By the suggested procedure, it was possible to analyze SMX and TMP in pharmaceutical preparations witho...

UV-visible aerosol optical thickness

Validation of UV-visible aerosol optical thickness retrieved from spectroradiometer measurements C. Brogniez, V. Buchard, and F. Auriol LOA/CNRS, Université des Sciences et Technologies de Lille, France Received: 18 January 2008 – Accepted: 21 January 2008 – Published: 26 February 2008 Correspondence to: C. Brogniez ([email protected]) Published by Copernicus Publications on behal...

7 Visible Light and UV Radiation

The sun is the most important source of visible and ultraviolet (UV) radiation. Even though the distance from the sun to the Earth is large – about 150×10 km – the fluence rate of solar radiation on Earth, the solar constant, is about 1 360 W/m 2 . Approximately 40% of this radiation is reflected back into space. The remaining 60% is the driving force of all life on Earth. A number of pigments ...