Saturday, November 6, 2010
Sand form of kuarsa that not circular within reason ordinary dirt. Below/Under microscope, sand of kuarsa that see to have sharp-pointed back part. This it is of course can hurt bronchi, eye, even husk. " Become the particle of it is true endanger."
easiest to Respiration it is true affect by ash of vulkanik. But the him of dusty impact of vulkanik in fact base on a number of factors, like particle concentration on the air which better less than 10 micron in diameter, presentation llama and frequency, obstetrical of ash, weather, and also the condition of health of someone.
Simple way avoid dusty presentation is to avoid the source of pollutions evacuateed. People with disease of respiration or only symptom have to leave high presentation area of ash of vulkanik. If silica concentration exceed recommended boundary: more than 50 mikrogram per meter cubic.made Masker surgical operation of cloth or paper which circulating many in fact only closing over areas about nose. that Type Masker have limitation of filtrasi caused by gap around conducive mouth and nose remain to entry of and germ of polutan which exist on the air. Respirator more give protection compared to surgical operation masker. Respirator more protect and filter fairish particle one micron. This appliance is attached snugly in face and function to prevent leakage.