Teflon

Upam da sem postavil v pravo sekcijo ... anywayz

Govori se, da je teflonska obloga na ponvi strupena oziroma kancerogena, če jo zaužiješ. Tako sklepam, ker slišim, da na spraskani ponvi NE SMEŠ pečt.

Kolikor sem našel na guglu je zadeva taka, da se za fino apliciranje premaza uporablja ena spojina, ki povzroča v večjih količinah tumorje pri miših. In spojina se lahko, ali pa tudi ne, v sledeh nahaja na ponvi.

Poleg tega naj bi to spojino (PFOA) našli v krvi ljudi in živali (polarni medved?) po celem svetu in se jo uporablja pri izdelovanju raznoraznih izdelkov.

Ma kdo bolj konkreten info?

lp

PFOA contaminates every continent.[41] PFOA has been detected in the central Pacific Ocean at low parts per quadrillion ranges, and at low parts per trillion levels in coastal waters.[42] Due to the surfactant nature of PFOA, it has been found to concentrate in the top layers of ocean water.[43] PFOA is detected widely in surface waters, and is present in numerous mammal, fish, and bird species.[41] However, wildlife has much less PFOA than humans, unlike PFOS[44] and other longer perfluorinated carboxylic acids;[45] in wildlife, PFOA is not as bioaccumulative as longer perfluorinated carboxylic acids.[36]

Most industrialized nations have average PFOA blood serum levels ranging from 2-8 parts per billion;[46] the highest consumer sub-population identified was in Korea--with about 60 parts per billion.[44] In Peru,[47] Vietnam,[48] and Afghanistan[49] blood serum levels have been recorded to be below one part per billion. In 2003-2004 99.7% of Americans had detectable PFOA in their serum with an average of about 4 parts per billion,[50] and concentrations of PFOA in US serum have declined by 25% in recent years.[51] Despite a decrease in PFOA, the longer perfluorinated carboxylic acid PFNA is increasing in the blood of US consumers

Zanimivo.

Vprašanje kako se to odraža na organizmih, 200 let nazaj večina ljudi ni imela ničesar podobnega v krvi, danes pa je to le ena izmed mnogih spojin.

Pogosto vidim enega tipa, ki kosi travo ob večjih prometnicah, katero sem slišal naj bi jo uporabljal za krmo živali.
Več kot 50 let smo vozli osvinčen benzin...heh. Se še spomnem kako sem v svojega bivšega ax-a moral dodat tisto zadevo proti klinkanju, ko so ukinili osvinčen benz.

Poanta je, da špricamo veliko snovi v okolje kjer "po naravi" tam nimajo kej počet.