Now, after killing some American kitties via food last year, melamine have just induced kidney stones inside a small, compared with the whole of China, population of babies, via milk.
Why, in the field of anal. chem. or biochem., level of protein is equal to that of the N element and therefore that of melamine? Is this the cutting-edge technology of determination of protein concentration in the century of biology? Or, no, this is because it’s in China. Anything can happen in China.
Don’t be a jerk. You don’t like here, you can go abroad.
Let me ask you: why the Americans didn’t use “the cutting-edge technology of determination of protein concentration in the century of biology” back in 2007 on the pet-food protein? It’s simply because Kjeldahl and Dumas tests are the standard tests to determine the protein levels under the assumption that no other sources of N are available in the substance in question, and they are widely used in the industry around the world.
Industrial approaches are not like your “bottom-up approaches to construct nano-scale materials”. It’s simply not practical to pinpoint every atoms all the time. Don’t be that narrow-minded.