建立了饮料中痕量苯的检测方法，采用吹扫捕集浓缩饮料中的苯，使用气相色谱质谱检测器进行定性定量测定。
The method utilized purge-and-trap to concentrate benzene in beverages, gas chromatography and mass spectrometry(GC-MS) was used to determine benzene .
研究了利用有色复合物的生成及颜色差别，定性鉴别和目视比色定量测定芦荟干粉的存在和相对含量的方法。
Analyzed qualitatively and determined quantitatively the exist and relative content of aloe dry powder by visual colorimetry, which using product of coloured complex and colour difference.
低级别的伽玛射线荧光光谱仪是适用于环境中的伽玛射线发射核素(IAEA, 1989)定性和定量测定。
Low level gamma-ray spectrometry is suitable for both qualitative and quantitative determinations of gamma-ray-emitting nuclides in the environment (IAEA, 1989).
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