# Why is copper (II) oxide used in quantitative analysis of carbon?

What is the significance of using cupric oxide in the quantitative analysis of carbon?

As far as I can tell from my research, only $\ce{CuO}$ is used to oxidize carbon to $\ce{CO2}$. Why can't we use other oxidants like $\ce{HNO3}$ or other metal oxides such as hematite? Is the use of $\ce{CuO}$ prevalent because of low cost or does it has some other special property?

• "The quantitative analysis of carbon" is done using many different procedures. Exactly what type of sample and what procedure are you interested in? – MaxW Aug 12 '16 at 15:05
• @MaxW But many sites and my textbook mention only one compound CuO for estimating the presence of carbon in an organic compound, so out of curiosity I asked this question . Could you please refer any book or website where oxidant is other than CuO? A particular sample is not mentioned and it is given in general. – JM97 Aug 12 '16 at 15:11
• For example it is common to analyze for carbon in steels and rocks. You won't use the same procedure for analyzing rocks that you use for steels. – MaxW Aug 12 '16 at 16:55