ʻO nā paʻakai amonium Quaternary (QAS) nā cationic compound i loko o nā hui alkyl i kahi kaulahao o C8 – C18, nā wai e hiki ke hoʻoheheʻe ʻia a hiki ke hoʻohana ʻia e like me nā mea disinfectants i nā ʻano hana lole.
ʻO QAS he mau ionic i hoʻohui ʻia me kahi nitrogen amonium quaternary, ʻehā mau hui alkyl a i ʻole arl e pili ana i kēia nitrogen, a me kahi ion anionic e like me chloride a bromide paha. Ma waena o nā hui alkyl ʻehā, ʻo kekahi he hui kaula alkyl lōʻihi i piha ʻoi aku ma mua o ʻewalu mau hydrocarbons a lawelawe pū ʻia ma ke ʻano he hui hydrophobic. Hoʻololi nā hui hydrophobic ma QAS i kā lākou hana antimicrobial (Tiller et al., 2001; Zhao and Sun, 2007). Me ka hydrophobicity ʻoi aku ka ikaika, nā hana antimicrobial ʻoi loa ka mana o ka QAS (Zhao and Sun, 2008) (Fig 16.1 a me ka Papa 16.1). Nui nā hanana QAS i loaʻa nā hana heʻenalu. QAS he biocides maikaʻi ke hoʻohana ʻia i nā wai wai a me nā disinfectants wai. Ke hoʻohui kemika ʻo QAS i nā ʻili puluniu hiki ke pale ʻia kā lākou hana ma muli o ka pili o lākou a me nā kūkulu hope loa o QAS ma nā papa. Hoʻohui kino QAS i nā olonā hiki ke hāʻawi i nā hana antimicrobial e ka hoʻokuʻu liʻiliʻi ʻana iā lākou mai nā ʻili o ke fiber i ka wā e hoʻohana ai, hiki ke hāʻawi i nā hana i manaʻo ʻia o nā mea.
ʻO ka noʻonoʻo e hoʻoemi i kahi 6-log hoʻoliʻiliʻi o nā bacteria i ka manawa pili
| QAS |
1 min (E. coli(ppm) |
5 min (E. coli(ppm) |
1 min (S. aureus(ppm) |
5 min (S. aureus(ppm) |
| ALPC |
100 |
100 |
100 |
50 |
| AALPC |
100 |
100 |
100 |
50 |
| BADPB |
50 |
50 |
50 |
10 |
| NADPB |
50 |
10 |
50 |
10 |
Ka manawa o ka manawa: Apr-16-2021