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MICROCLEANING - Cleaning living and working spaces of microscopic particles.To eliminate and control the constant influx of dust, several cleaning technologies can be employed as well as filtration technologies and the co-utilization of HVAC systems. In additon, some life style changes are inherent in the micro particle control and removal system of a building. Lets see what we are cleaning. Wikipedia describes the content of dust. From Wikipedia:Domestic dustDust in homes, offices, and other human environments consists of human skin cells, plant pollen, human and animal hairs, textile fibers, paper fibers, minerals from outdoor soil and dust, and many other materials which may be found in the local environment.[1] The precise composition of domestic dust can vary widely:
According to the German Environmental Survey, approximately 6 mg/m²/day of house dust is formed in private households,[3] depending primarily on the amount of time spent at home. Nearly 1000 dust particles per square centimeter settle on domestic surfaces every hour.[1] Some dust consists of human skin; it is estimated that the entire outer layer of skin is shed every day or two at a rate of 7 million skin flakes per minute, which corresponds to a mass emission rate of about 20 mg/minute.[4] Insects and other small fauna found in houses have their own subtle interactions with dust that may have adverse impact on the health of its regular occupants. Thus, in many climates it is wise to keep a modicum of airflow going through a house, by keeping doors and windows open or at least slightly ajar. In colder climates, it is essential to manage dust and airflow, since the climate encourages occupants to seal even the smallest air gaps, and thus eliminate any possibility of fresh air entering. House dust mites are on all surfaces and even suspended in air. Dust mites feed on minute particles of organic matter, the main constituent of house dust. They excrete enzymes to digest dust particles; these enzymes and their feces, in turn, become part of house dust and can provoke allergic reactions in humans. Dust mites flourish in the fibers of bedding, furniture, and carpets. The particles that make up house dust can easily become airborne, so care must be exercised when removing dust, as the activity intended to sanitize or remove dust may make it airborne. One way to repel dust is with some kind of electrical charge, but house dust can be removed by many methods, including wiping, swiping, or sweeping by hand, or with a dust cloth, sponge, feather duster, or broom, or by suction by a vacuum cleaner or air filter. The device being used traps the dust; however, some may become airborne and come to settle in the cleaner's lungs, thus making the activity somewhat hazardous. "Dust bunnies" are little clumps of fluff that form when sufficient dust accumulates. Dust is known to worsen hay fever. Avis Lieberman and Lachman estimated each adult looses 6 - 14 grams of dead skin material each day. The complete outerlayer is shed every four days. Each skin scale is a haven for bacterial growth. The innermost layer of skin is primarily composed of the protein collagen. As the gernminal layer pushes cells outward, the cells undergo changes. The outerlayers are composed of the insoluble protein keratin. These keratinized cells are continuously shed. The skin cells are not the most serious issue, but the sebum secreted by the skin, composed of primarily fatty acids, can adhere to sterile instruments and surfaces. Microbial Contamination - The most common inhabitants of the skin are micrococcaceae, cornybacteria, streptococci, spore-forming bacilli, yeasts and organisms from the Propionibacterium acnes, group. Staphylococci, streptococci.
1) Wikipedia, www.wikipedia.com 2)Pharmaceutical Dosage Forms: Parenteral Medications By Kenneth E. Avis, Herbert A. Lieberman, Leon Lachman, 1993, ISBN:0824787714
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