Spectrophotometric determination of silicon tetrahydride in the air of workplace.

A new, simple and sensitive method was developed for the determination of silicon tetrahydride in the air of workplace in this study. The alkaline resin-based spherical activated carbon was used to collect sample of silicon tetrahydride at workplace. Silicon tetrahydride was then desorbed from active carbon in 100°C hot water.

[The role of interleukin-1β on the pulmonary fibrosis in mice exposed to crystalline silica].

Objective: This study was designed to evaluate the role of interleukin (IL)-1β in the development of fibrosis in mice exposed to silica.

Methods: The total of 96 Male C57BL/6 mice were divided into four groups. (1) blank control group, (2) PBS group in which mice were instilled with PBS only, (3) silica + IL-1β mAb group in which mice were instilled with 2.