分光光度测定

A novel determination method of trace chromium in waste water by dual-wavelength spectrophotometry was established based on the fact that chromium can react with alizarin blue S to form red complex in H2SO4 medium.

在H2SO4介质中，铬与茜素蓝S形成红色产物，据此建立了双波长分光光度法测定废水中痕量铬的新方法。

This paper determined the content of urinary MTs and cadmium in different crowd by RLS method using alizarin red and graphite furnace atomic absorption spetrophotometry respectively.

用本文建立的茜素红共振光散射法和石墨炉原子吸收分光光度法分别测定了不同环境人群尿中MTs和Cd的含量。

Methods:Spectrophotometry was selected to determine the phosphorus level in soya lecithin,based on the formation of the blue complex by phosphate with ammonium molybdate and Fiske-Subbarow reagent in acid solution.

将样品中的有机磷酸化合物分解转化为无机磷酸盐，再利用在酸性溶液中磷酸盐与钼酸铵及Fiske-Subbarow试剂作用生成蓝色的化合物，在660nm处用分光光度法测定。

Potassium persulfate was used to digest the sewage sludge from municipal wastewater treatment plant in the high pressure sterilizer at 120 ℃, and the ammonium molybdate spectrophotometric method was used to determine total phosphorus content in the sewage sludge.

在高压灭菌器中于120℃下，用过硫酸钾溶液消解城市污水处理厂污泥，采用钼酸铵分光光度法测定污泥中总磷的含量。

Methods The pyrogllol auto-oxidation was adopted to produce superoxide anion O(superscript - subscript 2; the system H2O2/Fe(superscript 2+) was used to produce hydroxy radical through Fenton reaction; and spectrophotometry was used to detect the clearing functions of drugs with different concentrations against O(superscript - subscript 2) and OH.

采用邻苯三酚自氧化法产生超氧阴离子自由基O(上标-下标 2，采用H2O2/Fe(上标 2+)体系通过Fenton反应产生羟自由基，用分光光度法分别测定不同浓度的药物对O(上标-下标 2)是和OH的清除作用。

In this paper,the method for measuring water soluble Sulphate in soil by Barium Chromate Spectrophotometry is discussed as well as the experiment conditions about the rate of water soil and vibration time.

介绍铬酸钡分光光度法测定土壤中水溶性硫酸盐的分析方法，并讨论了水土比、振荡时间等实验条件。

Methods A series of improved experiments on barium chromate spectrophotometry without heating and the experiments of precision and accuracy,as well as comparison of experimental data between the improved method and the National Standard Method were carried out.

方法采用不加热方法，对铬酸钡分光光度法进行一系列改进实验，并进行了精密度及准确度试验，与国家标准方法的测定结果进行了比较实验。

With a high accuracy, the biuret in compound fertilizer is determined from the color reaction between biuret and copper by copper double salt spectrophotometry, meanwhile the remove of PO43-,Ca2+, Mg2+and NH3 interferences is described without other and new interfering matters.

利用缩二脲铜的色泽反应，采用铜复盐分光光度法测定复合肥中的缩二脲，并介绍除去PO43-，Ca2+，Mg2+，NH3干扰的方法，并且在此过程中不能引入新的干扰物质。该方法精密度较好。

AITC content of pungent products was determined by ultraviolet spectrophotometry, and compared with sensory evaluation. Results suggested that AITC content of pungent products was positively corelated to score of sensory evaluation of pungent degree.

然后选用紫外分光光度法对辛辣风味制品的AITC含量进行测定，同时探讨其与感官评价粗略定量之间的关系，结果表明辛辣程度感官评分与AITC含量呈正相关关系。

Methods Atomic absorption spectrometry was applied to determine the lead content in the air and dust in the main trunk roads around the primary schools in that region.

采用原子吸收分光光度法，对该区小学内及周围交通干道空气和尘土中的铅含量进行测定。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了