@article{ref1,
title="Ammonia",
journal="Medicine (Abingdon)",
year="2003",
author="Meulenbelt, Jan",
volume="31",
number="9",
pages="30-31",
abstract="Ammonia (Figure 1) is one of the most extensively used industrial chemicals. Most individuals can identify its odour at a concentration of 35 mg/m3 (1 mg/m3 is about 1.42 ppm). Occupational atmospheric exposure is usually regulated to a limit of 18-40 mg/m3. At concentrations of more than 50 mg/m3, ammonia vapour is irritant to the eyes and the upper respiratory tract. Exposure to concentrations of more than 1000 mg/m3 may lead to severe respiratory distress within minutes. Concentrations of more than 1500 mg/m3 are immediately life-threatening.<p />",
language="",
issn="1357-3039",
doi="10.1383/medc.31.9.30.27713",
url="http://dx.doi.org/10.1383/medc.31.9.30.27713"
}