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Titolo:
HIGH-OUTPUT GENERATION OF AEROSOLS WITH NARROW SIZE DISTRIBUTIONS
Autore:
CHEIN H; PETERS TM; LUNDGREN DA;
Indirizzi:
IND TECHNOL RES INST,CTR IND SAFETY & HLTH TECHNOL,BLDG 51,195-10 CHUTUNG HSINCHU TAIWAN RES TRIANGLE INST,CTR ENVIRONM ENGN & TECHNOL RES TRIANGLE PK NC 27709 UNIV FLORIDA,DEPT ENVIRONM ENGN SCI GAINESVILLE FL 32611
Titolo Testata:
Inhalation toxicology
fascicolo: 7, volume: 8, anno: 1996,
pagine: 709 - 722
SICI:
0895-8378(1996)8:7<709:HGOAWN>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
VIRTUAL IMPACTOR; DESIGN; PERFORMANCE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
H. Chein et al., "HIGH-OUTPUT GENERATION OF AEROSOLS WITH NARROW SIZE DISTRIBUTIONS", Inhalation toxicology, 8(7), 1996, pp. 709-722

Abstract

Two aerosol generators-a small particle generator (SPG) and a large particle generator (LPG)-were designed and fabricated to produce water-soluble particles with high mass output and narrow size distributions. The mass median aerodynamic diameter (MMAD) of solid particles produced could be varied by changing operation conditions and using different concentrations of sodium chloride (NaCl) solutions. The aerosol generation rate varied from about 0.2 to 24 mg/min depending upon the particle size produced as the geometric standard deviation (GSD) was maintained below 1.5. The SPG employed a Collison-type nebulizer with multiple nozzles and a solid-plate impactor, which removes generating droplets larger than the cutpoint diameter for the production of submicrometer aerosols with GSD <1.5. Different combinations of nebulization pressure/cutpoint diameter were selected to produce solid particles with MMAD in the range of 0.13-1.0 mu m. The LPG was consisted of a Delavansimplex nozzle installed at the bottom of the generation chamber labour 190 cm in height and 15 cm in diameter) and an improved virtual impactor located at the top of the generation chamber. Gravity was used to remove large droplets and the improved virtual impactor was employedto remove droplets less than the cutpoint diameter. Two sets of acceleration nozzle and collection probe were used to vary the impactor cutrite. The size-selective droplets were then evaporated to form solid particles with the MMAD nominally varying from 1 to 10 mu m and GSD <1.5.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/07/20 alle ore 14:25:12