采用气相色谱-质谱（GC-MS）分析技术，选择离子检测法（SIM），开发出一种准确可靠、灵敏度高的测定奶粉及奶制品中三聚氰胺的新方法。
A new method for determination of melamine in milk powder and milk products by gas chromatography-mass spectrum with selected ion monitor(GC-MS/SIM) was established in this paper.
挥发油的化学成分。方法用气相色谱-质谱（GC/MS）联用技术，应用峰面积归一化法测定各组分的相对含量。
Methods The chemical components of volatile oil were analyzed by gas chromatography-mass spectraphy (GC/MS), and their relative contents were determined by peak area normalization.
通过两次吸附分离，然后采用低压电离，高分辨质谱直接进样技术对重馏份油中的含氮多环芳烃进行定性测定。
The qualitative analysis of N polyaromatics in heavy oil was made by a double adsorption separation followed by the application of low voltage ionization and high resolution MS direct sampling.
应用气相色谱-质谱联用技术对姜黄属中草药郁金和姜黄中挥发油的化学成分进行了测定。
The chemical compositions of the volatile oils obtained from two traditional Chinese medicines, rhizomes of Curcuma aromatica and C.
方法：使用四级串联质谱（MS/MS）的多反应监测（MRM）技术测定。
Methods:Using multi-reactions monitoring (MRM) technology of triple-quadrupole tandem mass spectrometer to determine.
方法采用高效液相色谱法测定中药保健品中掺入盐酸西布曲明的含量，并用薄层色谱、高效液相色谱、红外光谱以及质谱技术进行定性鉴别。
METHODS an HPLC method was established to determine the contents of the organic extract of TCM preparations. Sibutramine hydrochloride was also identified by TLC, HPLC, IR and MS.
方法采用高效液相色谱法测定中药保健品中掺入盐酸西布曲明的含量，并用薄层色谱、高效液相色谱、红外光谱以及质谱技术进行定性鉴别。
METHODS an HPLC method was established to determine the contents of the organic extract of TCM preparations. Sibutramine hydrochloride was also identified by TLC, HPLC, IR and MS.
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