Patent ID: 9448211
Filing Date: 2016-09-20
CPC Classification: G01N,Y10T

Claim Text:
1. A method of measuring non-methane hydrocarbons in exhaust gas, comprising: sampling exhaust gas, wherein said exhaust gas includes native carbon dioxide, non-methane hydrocarbons and methane; removing said native carbon dioxide present in said exhaust gas at a temperature in the range of −100° C. to 700° C. to provide a mixture of non-methane hydrocarbons and methane; oxidizing said non-methane hydrocarbons present in said mixture of said non-methane hydrocarbons and said methane at a temperature in the range of 200° C. to 400° C. to produce carbon dioxide and provide a mixture of said carbon dioxide and said methane; and measuring a concentration of said carbon dioxide in said mixture of said carbon dioxide and said methane to provide a non-methane hydrocarbon concentration.