[Study on composite contamination of PM2.5 in aerosol of metallurgical plant].
OBJECTIVE
To detect whether there still have PM2.5 compound contamination on the condition of dedust equipment through the study.


METHODS
Both qualitative and quantitative analysis on the multiple contaminants and the particle radius of the sample were done by using chemical and electron microscope, electron spectrum, GC-MS, etc.


RESULTS
The ingredient of the compound contamination: H2O 22%, organics 34.75%, inorganics 43.75%. Main inorganics were Cu, C, Pb, Al, and most of their radius < or = 1.1 microm. There were over 140 kinds of organics, mainly the hydroxybenzene and PAHs. Besides heavy metals such as Pb, As, inorganics also included arsenic acid and phosphoric acid.


CONCLUSIONS
On the existing condition of existing dedust equipment, the compound contamination in aerosol of metallurgical plant were multiple kinds of heavy metals, acidic oxide and tens of kinds of organic contaminations (hydroxybenzene and PAHs), and their radius < or = 1.1 microm.
Luan
Xiangling
X
Academy of Military Medical Science, Beijing 100071, China.
Yu
Han
H
Du
Yumin
Y
Luan
Helin
H
D004391:Dust / Q000032:analysis; D004785:Environmental Pollutants / Q000032:analysis*; D008669:Metallurgy; D019216:Metals, Heavy / Q000032:analysis*; D009930:Organic Chemicals / Q000032:analysis*; D010087:Oxides / Q000032:analysis*; D010316:Particle Size
D004391:Dust; D004785:Environmental Pollutants; D019216:Metals, Heavy; D009930:Organic Chemicals; D010087:Oxides