查询词典 spectrophotometry

Objective:To develop an assay for the determination of phosphorus level in soya lecithin by spectrophotometry.

提要 目的：研究分光光度法测定大豆磷脂中磷的含量。

In this work, GC-MS, ICP-OES, UV-Visible Spectrophotometry were employed to determine the trace concentrations of the above six hazardous substances, and a standard method system for screening primarily, extraction, qualitative and quantitative analyses of the six substances was established and their factors were analyzed. By evaluating the relative standard deviation, recovery, repeatability, limit of detection, linear relation etc., the optimum parameters were given and thus the precision of analysis was equal to or higher than the IEC 62321 standard, meeting the requirement of RoHS.

针对中国电子电气业在遵守RoHS符合性实践中存在的诸多问题，本文采用GC-MS，ICP-OES，UV-Visible分光光度法等，对我国南方和香港地区各类电子电气产品中六种有害物质进行痕量分析，建立了一套标准的六种有害物质初步筛选、萃取、定性、定量分析方法，并对此方法体系的影响因素进行分析，对其相对标准偏差、回复率、再现率、检出限、线性关系等进行评估，得出了优化测试参数，在此条件下其检测的精密度达到或高于国际IEC 62321标准，满足RoHS测试要求。

Luteolin a standard for the control, by ultraviolet spectrophotometry of luteolin extraction were determined.

以木犀草素标准品为对照，用紫外分光光度法对木犀草素提取量进行测定。

In this article, the author extracted flavonoid from Hibiscus manihot L by alcohol reflux, and measure the effects of different concentration flavonoid extracts on tyrosinase activity using the Spectrophotometry.

利用乙醇回流提取法提取金花葵花中的总黄酮，采用分光光度法测定不同浓度金花葵总黄酮对酪氨酸酶活性的影响。

Using carubinose as standard, DNS as color developing reagent, the content of mannan in coconut shell was indirectly determined by spectrophotometry.

以 D-甘露糖为标准，DNS作显色剂，用分光光度法间接测定椰子壳中甘露聚糖的含量。

Objective To establish a method for rapid determination of the lead content in marine food products by fluorescence spectrophotometry.

目的 建立人工养殖海产品中铅的荧光分光光度快速测定方法。

The incubation system of chicken hepatic microsome was successfully established. The activity of cytochrome P450 was determined by ultraviolet spectrophotometry.

在建立鸡肝微粒体体外孵育体系的基础上，采用紫外分光光度法测定细胞色素P450酶系的活性。

Then the enzyme activities of CYP2E1 in the liver microsome were determined by spectrophotometry.

结果：实验组小鼠肝微粒体CYP2E1酶活性增加，于第3天达高峰，诱导率在4.96%~84.27%之间；各组CYP2E1与-βActin RT-PCR扩增条带像素灰度的比值差异无显著性。

The contents of potassium, sodium, calcium, magnesium, iron, chromium, nickel, manganese, copper and zinc in 11 kinds of traditional Chinese medicines, such as Albizia flower, milkvetch root, grassleaf sweetflag rhizome, thinleaf milkwort root, hawthorn fruit, ginkgo leaf, ginseng, Iongan pulp, cattail pollen, spine date seed and sappan wood were determined by atomic absorption spectrophotometry.

用原子吸收分光光度法检测合欢花、黄芪、石菖蒲、远志、山楂、银杏叶、人参、元肉、蒲黄、酸枣仁、苏木11种中药中钾、钠、钙、镁、铁、铬、镍、锰、铜、锌元素的含量，结合锌/铜比值、镁/钙比值，以数据极差法进行统计指标的标准化处理，以数量积法算出衡量被分类对象之间的相关系数，确定论域上的模糊矩阵。

In addition, catalytic spectrophotometry has been widely used in the determination of molybdenum because of its high sensitivity and selectivity.

此外，催化动力学光度法由于其较高的灵敏度和选择性，在微量钼的测定方面也得到了日益广泛的应用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。