title: THE DETECTION AND ESTIMATION OF PART PER BILLION CONCENTRATIONS OF HYDROCARBONS.
mesh_terms: D000397:Air Pollution; D002623:Chemistry Techniques, Analytical; D002845:Chromatography; D006838:Hydrocarbons; D012044:Regression Analysis
chemical_list: D006838:Hydrocarbons
keywords: AIR POLLUTION; CHEMISTRY, ANALYTICAL; CHROMATOGRAPHY; HYDROCARBONS