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"disinfectants" - 3 õppematerjali

NaClO-pesuvalgendi
1
docx

NaClO (pesuvalgendi)

Veepuhastina kasutatakse 12-15% sisaldusega lahust. Veel kasutatakse seda lõhna/plekieemalduseks, disinfektsiooniks. Keskkonda sattudes moodustab püsivaid kloororgaanilisi ühendeid. Satuvad nt. reoveepuhastitesse heitveena. Tugev oksüdeerija, võib kahjustada nahka või silmi. EL klassifikatsiooni järgi on ta KORROSIIVNE ja KUJUTAB OHTU KESKKONNALE http://www.ekyl.ee/public/2012/Anu/Kemikaalid1.pdf http://www.lenntech.com/processes/disinfection/chemical/disinfectants-sodium- hypochlorite.htm http://en.wikipedia.org/wiki/Sodium_hypochlorite

Keemia → Keemia
3 allalaadimist
Formaldehyde
11
doc

Formaldehyde

08 mg/m³ -Processing: 0.02 ­ 0.25 mg/m³ Workplace measurements conducted in Helsinki, Finland indicated a mean exposure level of 15.05 g/m³ or 0.012266ppm Consumer Exposure There is some natural formaldehyde in raw food and contamination may occur through fumigation, the use of formaldehyde as a preservative and through cooking. The daily formaldehyde intake from food may range between 1.5 and 14 mg. Tobacco smoke as well as urea-formaldehyde foam insulation and formaldehyde-containing disinfectants are all important sources of formaldehyde exposure. Smoking 20 cigarettes per day corresponds to an intake of 1 mg/day via inhalation (0,815ppm). Formaldehyde is used as a preservative in consumer products, such as cosmetics and household cleaning agents. The general public may also be exposed during release from some building materials such as pressed wood products. The estimates for the systemic absorption of formaldehyde

Keeled → Inglise keel
4 allalaadimist
Liha töötlemine
1168
pdf

Liha töötlemine

in a food facility. The skin, hands, hair, surfaces, and their inactivation requires anti- nose, and mouth harbor microorganisms that microbial treatments, carried out through can be transmitted through direct routes to physical means (hot water, steam, UV) or food-contact surfaces during processing, with the application of chemical substances packaging, and preparation. The transfer of (sanitizers or disinfectants), which should contaminants can also occur indirectly via be effective against microorganisms but personal equipment, such as clothing, foot- should not affect human health through haz- wear, and tools used in daily tasks. ardous residues or cause corrosion of the equipment. Cleaning and sanitation (or disinfection) Air and Water

Keeled → Inglise keel
22 allalaadimist


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