Inorganic germanium dioxide
is toxic and accumulates in the body.
When the densities of diatoms on algal surfaces were altered by soaking the algal fragments in a germanium dioxide solution ora modified Jorgensen medium, neither treatment (increased or reduced diatom densities) affected the larval settlement percentage on M.
Germanium dioxide significantly reduced the diatom density (3,000 [+ or -] 2,000 cells / [cm.
For instance, China levies 5% tariff on the export of germanium dioxide
products; deep-processing germanium products such as monocrystalline germanium slices and germanium optical components can enjoy preferential export tax rebate by 17% and 15%.
With unfavorable export taxes China has become extremely unwilling to sell germanium dioxide
which caused considerable growth of the price.
Presently, China is still the major producer of primary germanium products such as germanium dioxide
and zone-refined germanium ingot.
There are reports of achieving high hole mobility by adopting germanium dioxide
(GeO2) in the gate stack insulating layer, but due to its low dielectric constant, there still remains the challenge of reducing the EOT to 0.