土壤和沉积物挥发性卤代烃的测定吹扫捕集/气相色谱一质谱法
SoiI and sed iment-Determinat ion of vol at i le ha l hydrocarbonsPur ge and trap gas chromatogr aphy mass spectr ometry
SoiI and sed iment-Determinat ion of vol at i le ha l hydrocarbonsPur ge and trap gas chromatogr aphy mass spectr ometry