光度

Methods:We determined total flavonoids contents in leaves of Acer Saccharum by ultraviolet and visible spectrophotometry.

采用紫外-可见分光光度法对糖槭叶中总黄酮含量进行测定。

objective:to determine total flavonoids content in the leaves of acer saccharum.methods:we determined total flavonoids contents in leaves of acer saccharum by ultraviolet and visible spectrophotometry.results:the flavonoids content was 1.035mg/g in the leaves of acer saccharum.conclusion:the flavonoids content is rich in the leaves of acer saccharum and the leaves have pharmic value.

目的：本文对糖槭叶中的总黄酮含量进行测定。方法：采用紫外-可见分光光度法对糖槭叶中总黄酮含量进行测定。结果：糖槭叶中总黄酮含量为1.035mg/g。结论：糖槭叶中含有丰富的黄酮类化合物，具有可观的药用开发价值。

A spectrophotometric method for the determination of raceanisodamine has been developed based on the charge transfer reaction. The reaction between raceanisodamine and Salicyl fluorone was completed in ethyl alcohol medium at 10 min at room temperature.

以消旋山莨菪碱作为电荷给体，水杨基荧光酮作为电荷受体，用分光光度法研究了它们之间形成电荷转移络合物的条件。

A method for the micro determination of germanium by flow injection－spectrophotometry with CCD diode array detector is reported, based on the color reaction between germanium and salicyl fluorone in the presence of cetyl trimethyl ammonium bromide. A good linear relationship was obtained in the range of 0～3.0 mg/L for germanium.

研究了在溴化十六烷基三甲铵存在下，锗与2，3，7－三羟基－9－水杨基荧光酮－6的显色反应，采用二极管阵列检测器，建立了检测微量锗的流动注射分光光度法。

Separation of the sapindus-saponin from natural sapindus pericarps is very difficult, a rapid and simple determination method for total-sapindus-saponin is not founded.

为解决无患子皂苷分离较困难，无快速简单的检测方法等问题，本研究采用超滤膜分离和泡沫分离等新型分离技术对无患子皂苷进行分离纯化，并采用分光光度法测定无患子总皂苷。

Measure the optical rotation of the semicarbazone derivative solution in the polarimeter, following the procedure outlined in the Techniques Manual.

用旋光仪测得缩胺基脲衍生物水溶液的旋光度。

The newly publish ed ISO Standard for determining the speed of medical X-ray films specifies the u se of X-ray beam for the exposure of the films during their sensitometric tests; though this method is precise,it requires the use of sophisticated equipment an d time consuming operations.

新颁布的测定医用X线胶片感光度的国际标准规定，用X-射线作为感光测定曝光时的光源，此法精确，但所需设备复杂，操作耗时。

Based on the shortcomings of the COD determination method revised in National Standard, some improvement measures of the standard method, including improvement of slaking phrases, research of substitution catalysts and elimination of chlorine ion disturbance, are compared and discussed. Afterwards, some common substitution COD determination methods, such as correlation coefficient analysis method, electrochemistry analysis method, spectrophotometric analysis method and flow inject analysis method, are introduced.

在论述了国标中COD标准方法不足之处的基础上，本文就标准方法的众多改进措施分类进行了比较与探讨，包括消解方法的改进、替代催化剂的研究以及氯离子干扰的消除，然后介绍了相关系数法、电化学法、分光光度法和流动注射法等COD测定替代技术。

Based on this,first part of this work has established spectrophotometer and laser induced fluorescence spectrographic methods based on the liquid-core waveguide,and made it successfully apply to detecting iron and the cupric ion concentration.

基于此，本工作第一部分建立了基于液芯光纤的分光光度法和激光诱导荧光光谱法，并成功地应用于1，10邻二氮菲对铁的检测和催化荧光动力学方法对铜离子浓度的测定。

Objective: To develop a method for the determination of phosphates in meat by microwave digestion spectrophotography.

目的：建立微波消解－分光光度法进行肉制品中磷酸盐的测定。

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。