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Fenton's reagent is a solution of hydrogen peroxide (H 2 O 2) and an iron catalyst (typically iron(II) sulfate, FeSO 4). [1] It is used to oxidize contaminants or waste water as part of an advanced oxidation process. Fenton's reagent can be used to destroy organic compounds such as trichloroethylene and tetrachloroethylene (perchloroethylene).
The isotopic ratio of 18 O to 16 O, usually in foram tests or ice cores. High values mean low temperatures. Confounded by ice volume - more ice means higher δ 18 O values. Ocean water is mostly H 2 16 O, with small amounts of HD 16 O and H 2 18 O. In Standard Mean Ocean Water (SMOW) the ratio of D to H is 155.8 × 10 −6 and 18 O/ 16 O is ...
The δ values and absolute isotope ratios of common reference materials are summarized in Table 1 and described in more detail below. Alternative values for the absolute isotopic ratios of reference materials, differing only modestly from those in Table 1, are presented in Table 2.5 of Sharp (2007) [1] (a text freely available online), as well as Table 1 of the 1993 IAEA report on isotopic ...
Archaeological materials, such as bone, organic residues, hair, or sea shells, can serve as substrates for isotopic analysis. Carbon, nitrogen and zinc isotope ratios are used to investigate the diets of past people; these isotopic systems can be used with others, such as strontium or oxygen, to answer questions about population movements and cultural interactions, such as trade.
The formation free energy of carbon dioxide (CO 2) is almost independent of temperature, while that of carbon monoxide (CO) has negative slope and crosses the CO 2 line near 700 °C. According to the Boudouard reaction , carbon monoxide is the dominant oxide of carbon at higher temperatures (above about 700 °C), and the higher the temperature ...
Iron-rich solution was added to 64 km 2 area which led to an increase in phytoplankton primary production. [21] As a result an extended Redfield ratio was developed to include this as part of this balance. This new stoichiometric ratio states that the ratio should be 106 C:16 N:1 P:0.1-0.001 Fe
Furthermore, this metric is of interest to the pharmaceutical industry where development of carbon skeletons is key to their work. The atom economy calculation is a simple representation of the “greenness” of a reaction as it can be carried out without the need for experimental results.
Cementite (or iron carbide) is a compound of iron and carbon, more precisely an intermediate transition metal carbide with the formula Fe 3 C. By weight, it is 6.67% carbon and 93.3% iron. By weight, it is 6.67% carbon and 93.3% iron.