提取剂

Chapter two systematical analyzed on the blue ball point writing inks with TLC, Analysed 45 various blue ball-pen ink produced by various country or area. Then classify the ball-pen into three classes and 9 sub-classes.

第二章研究了薄层色谱法鉴别蓝色圆珠笔油墨的种类，选择了合适的提取剂和展开剂，对市售的46种不同国家和地区生产的蓝色圆珠笔油墨字迹进行分析，根据圆珠笔中所含的不同类的染料将其分为分三大类，共九小类。

Based on this, a rapid,simple and accurate method for the determination of hexavalent chromium in alkalescent soil has been developed.

结果表明，用0.4mol／LKCl为提取剂，离心分离提取液，可简单、快速、准确地测定土壤中Cr6＋，所建立的方法适用于北方偏碱性土壤。

Accelerated solvent extraction and Soxhlet extraction were used to extract capparis spinosa seed oil with he-xane and ethyl ether.

采用加速溶剂萃取及索氏提取法，用正己烷和乙醚为提取剂从野西瓜种子中提取油脂，经浓H2SO4催化，甲醇甲酯化处理后，以气相色谱-质谱联用技术鉴定出野西瓜种子中的脂肪酸主要组成为：油酸、亚油酸、硬脂酸等，其中不饱和脂肪酸总量占91.4%，主要成分油酸占73.3%。

Measurements of protein concentration and the sodium dodecyl sulphate-polyacrylamide gel electrophoresis showed that 60%τ-butanol plus 4% DTT at a sample-weight to extraction-solution ratio of 1:8 was optimum for kafirin extraction.

蛋白浓度测定和SDS-PAGE电泳表明，DDT浓度为4%的60%叔丁醇溶液，样品质量比提取剂用量为1：8是提取高粱种子醇溶蛋白的最佳条件。

Based on single factor experiment, the extraction conditions were optimized by orthogonally rotational combination design.

从4种常用试剂中选出乙醇作为提取剂，并在单因素试验的基础上，通过二次回归旋转组合设计试验，优化白藜芦醇提取的工艺参数。

Ethanol was chosen as the extract solvent from four kinds of solvents. Based on single factor experiment, the extraction conditions were optimized by orthogonally rotational combination design.

从4种常用试剂中选出乙醇作为提取剂，并在单因素试验的基础上，通过二次回旋转组合设计试验，优化白藜芦醇提取的工艺参数。

Water samples were extracted and purified and collected by solid-phase extraction LC-18 column. Soil samples were extracted by ethyl acetate/petroleum ether (2:1, by vol) and purified by sulphonation. Wheat sample was extracted by acetonitrile/water (4:1, by vol) and purified and collected by SPE- Florisil column.

水样直接用LC-18固相萃取小柱分离、净化和富集；采用乙酸乙酯／石油醚（体积比2：1）振荡提取，磺化法净化，测定土壤中氯氟吡氧乙酸残留量；以乙腈／水（体积比4：1）为提取剂，氟罗里硅土固相萃取小柱分离、净化，测定小麦样品中氯氟吡氧乙酸的残留量。

The results showed that if appropriate mobile phase was chosen, the adoption of acetone, ethanol and isopropyl alcohol as organic agents for melamine extraction could also got good results.

结果显示，选择合适的流动相，使用丙酮、乙醇或异丙醇为提取剂可以获得较好的提取效果。

Pesticides were extracted from tea with hexane-acetone (volume ratio is 1:1) in an ultrasonic bath and cleaned up on a Florisil and neutral alumina column, then were determined by gas chromatography with negative chemical ionization mass spectrometric detection in the selected ion monitoring mode, and with heptachlor epoxide as the internal standard. Spiked blank samples were used as standards to counteract the matrix effect observed in the chromatographic determination.

茶叶试样用V/V=1/l混合提取剂超声提取，经Florisil矽藻土和中性氧化铝混合层析柱净化后，以环氧七氯为内标物，采用GC-NCI-MS的选择离子监测方式分析；探讨了茶叶试样的基体诱导色谱响应增强影响所产生的分析误差及其减小的措施，用空白试样基体匹配校准曲线法定量分析。

The total contents of rice prolamine of 300 lines were determined with ultraviolet absorbing.

用醇溶蛋白提取剂提取了300个水稻品系的醇溶蛋白，紫外吸收法测定了水稻种子中醇溶蛋白的总含量。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失