查询词典 spectrometric

Ten variously substituted benzoyl peroxides were synthesized for Raman spectrometric identification both in solution (CCl 2FCClF 2) and solid state. Different to infrared spectra, Raman spectra have been proved to be a useful characterization of the highly symmetric peroxy bond in diacyl peroxides. The ν OO value ranged from 850 to 899 cm -1 varies regularly with the substituent on the phenyl ring.

合成了全氟和其它对位、间位取代的共10种过氧化苯甲酰，测定了它们的固体和溶液(溶剂为F113， CCl2FCClF2)的激光拉曼光谱，首次发现这类化合物中高度对称的过氧键有较强的特征谱带，即νOO在850至899 cm-1之间，并随取代基不同而呈现规律变化。

The spectrometric properties of the purified RE-pheophytins (RE＝La, Nd and Tb) was investigated. It was found that the RE-pheophytins prepared in acetic acid medium were in fact the modified pheophytin complexes with rare earths.

4利用硅胶薄层色谱对所制备的稀土叶绿素进行分离纯化；系统比较了不同稀土叶绿素之间以及它们与天然叶绿素的光谱性质和色谱保留行为的差别。

Edta titrimetric method and flame atomic absorption spectrometric method.

乙二胺四乙酸滴定法和火焰原子吸收光谱测定法

A high-performance liquid chromatography-tandem mass spectrometric method was established for the determination of residue of malachite greenin Trionyx sinensis .

建立了中华鳖中孔雀石绿残留量的液相色谱。串联质谱检测方法。

In contrast, mass spectrometric measurement containing ESI-MS and MALDI-MS not only allows posttranslational modification characterization but also reveals the number of acetyl groups attached to the protein.

软电离生物质谱技术ESI-MS和MALDI-MS能很好地应用于翻译后修饰的鉴定研究，不仅能检测到翻译后修饰蛋白，且能得到具体的修饰位点信息。

The annealing behavior of V_2 in CZSi introduced by fast neutron irradiation was investigated by Flourier infrared spectrometric analyzer, and the effect of the dose of the fast neutron irradiation on the formation of V_2 was also studied in detail.

通过傅立叶红外光谱仪技术研究了由快中子辐照直拉硅中引入的辐照缺陷——双空位(V2)退火行为，主要研究了不同中子辐照剂量对双空位的影响。

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。

An inductively coupled plasma-atomic emission spectrometric method for the determination of trace thorium in uranium dioxide was established.

采用717型阴离子交换树脂分离试液中钍，建立了电感耦合等离子体原子发射光谱法测定二氧化铀中痕量钍的新方法。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。