Clay occlusion of respirable quartz particles detected by low voltage scanning electron microscopy, X-ray analisis
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| Tag | 1 | 2 | Valor |
|---|---|---|---|
| LDR | 00000nab a2200000 i 4500 | ||
| 001 | MAP20071017824 | ||
| 003 | MAP | ||
| 005 | 20080418115211.0 | ||
| 007 | hzruuu---uuuu | ||
| 008 | 940309e19900401gbr|||| | |00010|eng d | ||
| 035 | $a6800003421 | ||
| 040 | $aMAP$bspa | ||
| 084 | $a872 | ||
| 245 | 1 | 0 | $aClay occlusion of respirable quartz particles detected by low voltage scanning electron microscopy, X-ray analisis$cW.E. Wallace... [et al.] |
| 520 | $aRespirable-sized dust particles from a clay mine and mill were examined for aluminium and silicon content by scanning electron microscopy-energy dispersive X-ray analysis at incident electron energies of 5-20 keV. Most of the high silica content particles, those which had a silicon to silicon plus aluminium signal fraction, measured at 20 keV, of 0.9 or greater, showed a decrease in the silicon fraction of signal with decreasing incident electron energy, down to values of between 0.6 and 0.8 at 5 keV: this decrease was a function of particle size and composition. Simple models for silicon fraction of signal vs incident electron voltage suggest this behavour is due to a heterogeneous particle structure in which an aluminosilicate coating occludes the surface of a silica particle core. The coating survives incubation in a major component of pulmonary surfactant | ||
| 650 | 1 | 1 | $0MAPA20080585679$aHigiene industrial |
| 650 | 1 | 1 | $0MAPA20080605278$aContaminantes químicos |
| 650 | 1 | 1 | $0MAPA20080573324$aPolvo de cuarzo |
| 650 | 1 | 1 | $0MAPA20080542900$aArcilla |
| 650 | 1 | 1 | $0MAPA20080540760$aCuarzo |
| 650 | 1 | 1 | $0MAPA20080545192$aRayos X |
| 650 | 1 | 1 | $0MAPA20080553975$aDifracción |
| 650 | 1 | 1 | $0MAPA20080537005$aSEM |
| 650 | 1 | 1 | $0MAPA20080607609$aPartículas ambientales |
| 650 | 1 | 1 | $0MAPA20080591960$aMétodos de análisis |
| 700 | 1 | $0MAPA20080087289$aWallace, W.E. | |
| 740 | 4 | $aThe Annals of occupational hygiene | |
| 773 | 0 | $tThe Annals of occupational hygiene$dOxford [etc.]$gnº 2, April 1990 ; p. 195-204 |