1.Twenty-six chemical constituents were identified by GC-MS.The relative content of docosane was the highest.

1.【英文】 The volatile oil was obtained from the seed of Fibraurea recisa pierre by steam distillation.

2.The method for the determination of 4,6-dinitro-cresol(DNOC) in fruits has been established with GC-MS.

2.质联(GC-MS)技术建立了水果中4,6-二硝基邻甲酚(DNOC)的测定方法。

3.Objective:To develop a GC-MS approach for the determination of tripropyltin(TPrT),tributyltin(TBT) and triphenyltin(TPhT) in fish.

3.建立水产品中三丙基锡、三丁基锡和三苯基锡的色谱-质谱(GC-MS)分析方法。

4.Abstract： Chlorobromoisocy anuric acid is the one that corrodes chromatographic column when analyzed with GC or HPLC.

4. ： 介绍了一种准确简便的测定氯溴异氰尿酸烟剂中的有效成份的分析方法——碘量法。

5.This method was compared with that of desulfonation GC and the relative deviation of LAS average molecular weight is less than 0.1%.

5.所测得的烷基苯磺酸的平均对分子质量色谱法比,对偏差不大于0.1%。

6.The oils were analyzed by GC-MS and percentages were obtained by normalized peak areas, where main components are nootkatone, D-limonene, osthole, cis-linaloloxide, furfural, and trans.

6.色谱-质谱(GC-MS)联技术分析,鉴定出主成分为圆柚酮、D-柠檬烯、王草素、顺式-芳樟醇氧化物、糠醛、反式-芳樟醇氧化物。

7.The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

7.以异丙醇为溶剂,壬醇为内标,采色谱-质谱法分析了卷烟烟总粒物中的游离乙酸,乙酸测定结果的对标准偏差小于1%,平均回收率为99。