27 December | FLUORIDE & HEALTH | admin
SULFURYL FLUORIDE = More F. Load.
The use of the fluoride-containing pesticide, sulfuryl fluoride
as a food fumigant (trade name ProFume ®) as well as the
fluoridation of drinking water, also contribute to the
release of fluoride from anthropogenic sources.
“Sulfuryl fluoride breaks down to fluoride and sulfate inside the insect’s
body. Fluoride, the primary toxin, interferes with the metabolism of
stored fats and carbohydrates that the insect needs to maintain a
sufficient source of energy (disrupts glycolysis and the citric
acid cycle). The insect then uses protein and amino acids as
an alternative source of energy; however, the metabolic
rate does not increase sufficiently, and the insect dies...
Sulfuryl fluoride (SO2F2) (* ♦ See safe alternative below) is a radiatively active industrial chemical released into the atmosphere in significant (ktonne/year) quantities. The potential for SO2F2 to contribute to radiative forcing of climate change needs to be assessed. Long path length FTIR/smog chamber techniques were used to investigate the kinetics of the gas-phase reactions of Cl atoms, OH radicals, and O3 with SO2F2, in 700 Torr total pressure of air or N2 at 296 ± 1 K. Upper limits of k(Cl + SO2F2) < 9 × 10−19, k(OH + SO2F2) < 1.7 × 10−14 and k(O3 + SO2F2) < 5.5 × 10−24 cm3 molecule−1 s−1 were determined. Reaction with Cl atoms, OH radicals, or O3 does not provide an efficient removal mechanism for SO2F2. The infrared spectrum of SO2F2 is reported and a radiative efficiency of 0.196 W m−2 ppbv−1 was calculated. Historic production data estimates are presented which provide an upper limit for expected atmospheric concentrations. The radiative forcing of climate change associated with emissions of SO2F2 depends critically on the atmospheric lifetime of SO2F2.
Further research is urgently needed – 3 + SO2F2) < 5.5 × 10−24 cm3 molecule−1 s−1 were determined. Reaction with Cl atoms, OH radicals, or O3 does not provide an efficient removal mechanism for SO2F2. The infrared spectrum of SO2F2 is reported and a radiative efficiency of 0.196 W m−2 ppbv−1 was calculated. Historic production data estimates are presented which provide an upper limit for expected atmospheric concentrations. The radiative forcing of climate change associated with emissions of SO2F2 depends critically on the atmospheric lifetime of SO2F2.
Further research is urgently needed to define the magnitude
of potential non-atmospheric sinks. !!!
The potential for residues resulting from the use of
ProFume Gas Fumigant on oilseeds, pulses and
grains, can prejudice Australian trade.
Not all countries will accept this poisonous residue.
Full text → HERE
* Sulfuryl fluoride (SO2F2) and trifluoromethyl sulfurpentafluoride (CF3SF5) are potent synthetic greenhouse gases that ARE NOT PART OF THE KYOTO PROTOCOL SUITE of SGGs (KP-SGGs). [ Our emphisis ] Sulfuryl fluoride use in Australia is growing rapidly, as a replacement for phosphine (PH3) and possibly methyl bromide (CH3Br), in grain fumigation.[*] It is unlikely that trifluoromethyl sulfurpentafluoride is used in Australia. Its occurrence in the atmosphere is largely as a by-product of the production of perfluorooctanesulfonic acid (PFOS: CF3(CF2)7SO3H), which has never been manufactured in Australia, but is a key ingredient in fabric stain repellants (e.g. 3M’s Scotchguard) …
More ⇒ HERE
♦ The safe traditional treatment for killing weevils is Co2 –
It can be used in grain silos.
(Ancient seafarers used to light a candle in each barrel
of grain before sealing it up.)
