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

1.【英文要】 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.利用气质联用(GC-MS)技术建立水果中4,6-二硝基邻甲酚(DNOC)的测定法。

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气相色谱-质谱(GC-MS)法。

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

4. 要： 一种准确简便的测定氯溴异氰尿酸烟剂中的有效成份的法——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相对子质量与气相色谱法相比,相对偏差不大于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.用气相色谱-质谱(GC-MS)联用技术,鉴定出主要成为圆柚酮、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,采用气相色谱-质谱法卷烟烟气总粒相物中的游离乙酸,乙酸测定结果的相对标准偏差小于1%,平均回收率为99。