In situ optical measurements of hydrofluoric acid aerosols

A Study of Optical, Physical and Chemical Properties of Aerosols Using in Situ Measurements

Title of Document: A STUDY OF OPTICAL, PHYSICAL AND CHEMICAL PROPERTIES OF AEROSOLS USING IN SITU MEASUREMENTS Zahra Chaudhry, Ph.D., 2009 Directed By: Professor Zhanqing Li, Department of Atmospheric and Oceanic Science Using a simple sampling apparatus, aerosol particles were collected on a polycarbonate substrate in various locations around the world. The focus of this study was Xianghe, Chi...

Hydrofluoric acid.

Measurements of optical properties of atmospheric aerosols in Northern Finland

Three years of continuous measurements of aerosol optical properties and simultaneous aerosol number size distribution measurements at Pallas GAW station, a remote subarctic site in the northern border of the boreal forest zone, have been analysed. The scattering coefficient at 550 nm varied from 0.2 to 94.4 Mm−1 with an average of 7.1±8.6 Mm−1. Both the scattering and backscattering coefficien...

Etching with Hydrofluoric Acid

Photoresists, wafers, plating solutions, etchants and solvents ... Phone: +49 731 977343 0 www.microchemicals.eu [email protected] Etching of SiO2, Quartz, and Glasses with HF Hydrofluoric acid is the only etchant which attacks amorphous SiO2, quartz, or glasses at significant high etch rate. However, HF is not only a strong corrosive, but also highly toxic towards higher concentrations: ...

Hydrofluoric Acid Exposure

A 21-year-old male was admitted to the emergency department with bleeding skin burns. He had been exposed to 70% hydrofluoric acid (HF) through his nitrile hand gloves during an etching glass procedure at work. He had painful lesions, which included bleeding skin abrasions due to seconddegree burns on the first and second fingertips on the right hand, and white spots on the left first finger, w...