These results allowed us to conclude that in both types of samples copper was in the +1 oxidation state
, Zn in the +2 oxidation state
, and S in the -2 oxidation state
, which also confirmed the valence (IV) for Sn.
The occurrence of absorbance peak also confirms the formation of emeraldine oxidation state
Cerium oxide nanoparticles that are made of cerium, a rare earth metal belonging to the lanthanide series, is capable of existing in a dual oxidation state
and hence is useful for various applications.
(27,28) The presence of copper carbonate in glazes, similar to malachite, can generate a wide range of hues from aqua to green to a vibrant red depending on its concentration and oxidation state
. (29) Emerald's distinctive green color in glaze can be recreated using chromium oxide.
The health hazards associated with exposure to chromium are dependent on its oxidation state
,' he said, emphasising the need for regulating food products.
TOTOX values indicate an oil's overall oxidation state
, and are calculated by measuring the Anisidine value (AV) and the Peroxide value (PV).
"Our idea was to study the history of the oxidation state
of iron in these basalts and see if we could pinpoint when the iron began to show signs of oxidation and thus when the deep ocean first started to contain appreciable amounts of dissolved O2," Stolper said in (http://news.berkeley.edu/2018/01/03/which-came-first-complex-life-or-high-atmospheric-oxygen/) a statement Wednesday.
In the XPS spectra on the [Ti.sub.2p] transition, Figure 9(a), the oxidation state
of titanium [Ti.sup.4+] is represented by the characteristic peak of [Ti.sub.2p] (458.5 eV) and the Nb substitution not resulted in modification of the Ti[O.sub.2] oxidation original state.
In recovery test for speciation analysis of Cr, As, and Se, two kinds of recovery tests were separately performed using the stock solution for lower oxidation state
of Cr(III), As(III), and Se(IV) and that for higher oxidation state
of Cr(VI), As(V), and Se(VI) to avoid the oxidation-reduction reaction among these elements.
X-ray photoelectron spectroscopy (XPS) was used to analyze the surface metal oxidation state
of the samples.
PV is a parameter commonly used to evaluate the primary oxidation state
of vegetable oils during technological treatments and storage.
The 2[p.sub.3/2] peak was shifted to higher binding energies (711.6 eV for 0.1, 0.2, and 0.5wt.% Au and 711.9 eV for 1.0 wt.% Au), indicating that the Fe oxidation state
of surface iron species is sensitive to the Au composition.