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7697542 
Journal Article 
MEASUREMENT AND ANALYSIS OF AMMONIA EMISSION FROM A PIG FARM IN THE NORTHEAST OF CHINA 
Xu, YY; Guan, JiuN; , 
2014 
Ecological Chemistry and Engineering S
ISSN: 1898-6196
EISSN: 2084-4549 
SOC ECOLOGICAL CHEMISTRY & ENGINEERING 
OPOLE 
71-77 
WOS:000334665400014 
China is the largest swine production country in the world. The fast development has consequently brought various environmental issues which have already seriously threatened the environmental quality. This study is aimed to measure the concentrations of NH3 in the pig houses in the selected pig farm, try to conclude characteristics on the concentration change and the correlation between the concentrations and the environmental factors. The NH3 concentration was monitored in two fattening pig houses. The concentrations fluctuated between 11.0 and 26.9 ppm, 11.0 and 28.5 ppm respectively during the measurement periods, peaking at the early morning and in the afternoon before cleaning. The concentrations of NH3 correlated to the indoor temperature in winter, whereas, there was no correlation between relative humidity and NH3 concentrations.