Ama-quaternary ammonium salts (QAS) angama-cationic compounds aqukethe amaqembu e-alkyl ngobude be-C8–C18, angancibiliki emanzini futhi angasetshenziswa njengezibulala-magciwane ezimbonini zezindwangu.
Ama-QAS angama-compound e-ionic ane-quaternary ammonium nitrogen, amaqembu amane e-alkyl noma e-aryl axhunywe kule nitrogen, kanye ne-anionic ion efana ne-chloride noma i-bromide. Phakathi kwamaqembu amane e-alkyl, elilodwa yiqembu elide le-alkyl chain eliqukethe ama-hydrocarbon angaphezu kwesishiyagalombili futhi lisebenza njengeqembu le-hydrophobic. Amaqembu e-hydrophobic ku-QAS avame ukuthinta imisebenzi yawo yokulwa namagciwane (Tiller et al., 2001; Zhao and Sun, 2007). Ngokungabi namandla okumelana namagciwane okunamandla, imisebenzi enamandla kakhulu yokulwa namagciwane i-QAS enayo (Zhao and Sun, 2008) (Isithombe 16.1 kanye neThebula 16.1). Ama-compound amaningi e-QAS anemisebenzi ye-surfactant. Ama-QAS angama-biocide asebenzayo uma esetshenziswa ezixazululweni zamanzi kanye nanjengezibulala-magciwane eziwuketshezi. Lapho ama-QAS exhunywe ngamakhemikhali ezindaweni zefayibha imisebenzi yawo ingaphazanyiswa kuye ngokuthi axhunywe kanjani kanye nezakhiwo zokugcina ze-QAS ezindaweni. I-QAS efakwe ngokomzimba kumafayibha ingahlinzeka ngemisebenzi yokulwa namagciwane ngokuyikhipha kancane kancane ezindaweni zefayibha ngesikhathi sokusetshenziswa, okungahlinzeka ngemisebenzi ehlosiwe yezinto zokwakha.
Ukugxila kubangela ukwehla kwamagciwane ngama-log ayi-6 ngesikhathi sokuxhumana
| I-QAS | umzuzu ongu-1 (I-E. coli) (ppm) | imizuzu emi-5 (I-E. coli) (ppm) | umzuzu ongu-1 (S.aureus) (ppm) | imizuzu emi-5 (S. aureus) (ppm) |
| I-ALPC | 100 | 100 | 100 | 50 |
| I-AALPC | 100 | 100 | 100 | 50 |
| I-BADPB | 50 | 50 | 50 | 10 |
| I-NADPB | 50 | 10 | 50 | 10 |
Isikhathi sokuthunyelwe: Ephreli-16-2021