色质

Keywords Radix Cudramiae;steam distillation; vola tile oil;GC-MS

穿破石；水蒸气蒸馏；挥发油；气相色谱-质谱联用

A simple,sensitive and reproducible high performance liquid chromatography-electrospray ionization mass spectrometry method for simultaneous separation and determination of adenosine and uridine is developed.

本文报道采用电喷雾离子化，用高效液相色谱质谱联用法同时分离和测定冬虫夏草及其代用品中主要活性成分尿苷和腺苷的方法。

The technical conditions for extracting oil from Xanthoceras sorbiflia Bunge seeds by microwave were studied.

以文冠果籽为原料，研究了微波辅助提取文冠果籽油的工艺条件，通过单因素试验和正交试验，探讨了溶剂种类、微波功率、提取时间、温度、料液比对文冠果籽油提取率的影响；并采用气相色谱－质谱联用方法分析了文冠果籽油的组成。

A method is described for simultaneous analysis of simazine, atrazine, acetochlor, alachlor, prometryne, pyridaben, quizalofop-ethyl residue in strawberry using gas chromatography-mass spectrometry.

建立了气相色谱-质谱法，选择离子技术对草莓中乙草胺、西玛津、哒螨酮、禾草克、阿特拉津、扑草净、甲草胺多残留进行同时检测的方法。

The volatile compounds of silkies on feeding medlar and feeding stuff were extracted and identified with solidphase micro extraction and gas chromatography-mass spectrum 79 from silkies on feeding medlar and 61 from silkies on feeding stuff.

采用固相微萃取法，结合气相色谱－质谱技术对甘肃景泰条山农场的枸杞园散养和饲料笼养乌骨鸡肉的挥发性物质进行检测分析。

Aroma components of grape from F1 generation of two selfing and one crossing combinations were analysed with Gas chromatography-Massspectrum-Computer System.

利用气相色谱-质谱-计算机联用系统对两个自交组合、1个杂交组合亲本及其后代的香气成分进行研究。

According to the relative rented times and the relative area resultants in chromatographic fingerprint, a comparison is conducted with fuzzy cluster analysis.

采用热裂解色谱／质谱法研究茶叶的指纹图谱，考察了热解温度、热解时间对指纹图谱的影响。

The compound was pyrolyzed in He atmosphere and analyzed by GC/MS.

通过甲醇提取，常压、中压和高压制备色谱分离，从津巴布韦烤烟烟叶中提取出3-氧代-α-紫罗兰醇-β-D-吡喃葡萄糖苷，得率0.0034%，并进行了质谱、紫外、红外和核磁共振结构鉴定，以及在氦气中的热裂解-GC/MS分析。

Effects of different pyrolytic temperatures on the formation of aromatic substances were investigated by pyrolysis chro-matography-mass chromatography when β-carotene was pyrolysed at high temperature under nitrogen protection.

利用裂解色谱-质谱联用仪对β-胡萝卜素在不同温度下进行裂解时所生成的香味物质进行了研究。

This project will mass produce high purity paralytic shellfish toxins using a combination of photobioreactor, HPLC-MS and NMR approaches, and develop novel PSTs detection method based on fluorescent characteristics of crown ethers, and finally apply this product and method for PSTs monitoring in

本项目将分离纯化中国沿海典型麻痹性贝毒C1/C2，GTX1/4，GTX2/3和GTX5，运用液相色谱-质谱联用技术和核磁共振等方法定量毒素纯度和含量，制备高纯度毒素标样，建立麻痹性贝毒的大规模生物生产技术；合成筛选适宜的毒素化学传感器—冠状醚，优化毒素和冠状醚的反应体系，结合多重时间分辨荧光技术，建立麻痹性贝毒多重时间分辨荧光检测技术，并用于水产品中麻痹性贝毒的检测。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐