Distribution of particle and gas concentrations in Swine gestation confined animal feeding operations.

ABSTRACT:

Objectives

Dust mass concentrations, temperatures, and carbon dioxide concentrations were mapped in a modern, 1048-pen swine gestation barn in winter, spring, and summer.

Methods

In each season, two technicians measured respirable mass concentrations with an aerosol photometer and temperatures and carbon dioxide concentrations with an indoor air quality monitor at 60 positions in the barn. Stationary photometers were also deployed to measure mass concentrations during mapping at five fixed locations.

Results

In winter when building ventilation rates were low (center-barn mean air velocity=0.34 m s(-1), 68 fpm) to conserve heat within the barn, mass and carbon dioxide concentrations were highest (mass geometric mean, GM=0.50 mg m(-3); CO2 GM=2060 ppm) and fairly unifor

SUBMITTER: Peters TM 

PROVIDER: S-EPMC4777339 | biostudies-literature | 2012 Nov

REPOSITORIES: biostudies-literature