Abstract
A micromethod to determine nitrogen in organic compounds of 1–1.5 mg has been studied by the combustion method where oxygen is flushed into an empty combustion tube heated at 850 °C. The flushing nozzle is consisted of two silica filters in a L-tube and oxygen flowing out of the nozzle rapidly oxidizes the organic vapor gasified in a sample heater. Excess oxygen and nitrogen oxides are absorbed and reduced with reduced copper heated at 500–600 °C.
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