室温条件下样品在稀释剂（NMP）中不溶解，在顶空加热平衡时样品溶于稀释

The sample does not dissolve in the diluent (NMP) at room temperature, and the sample is soluble in the diluent (NMP) when the headspace is heated and equilibrated; and the NMP reagent will produce degradation peaks after sonication, which interferes with the detection of the sample: so blank solution, standard solution Ultrasound is prohibited for the sample solution.

At room temperature, the sample does not dissolve in diluent (NMP), and at headspace heating equilibrium, the sample dissolves in diluent (NMP); Moreover, the NMP reagent will produce a reduced resolution peak after ultrasound, which will interfere with the detection of the sample: therefore, ultrasound is prohibited for blank solution, standard solution and sample solution.

At room temperature, the sample does not dissolve in the diluent (NMP), but it is dissolved in the diluent (NMP) during headspace heating equilibrium. Moreover, NMP reagent will produce degradation peaks after ultrasound, which will interfere with the detection of samples: therefore, the blank solution, standard solution and sample solution are prohibited from ultrasound.