分光光度测定

A method for the determination of high-content of copper in copper materials by flame atomic absorption spectrophotometry using sub-sensitive spectral line at 249.20 nm is reported in this paper.

中文摘要：利用铜的原子吸收光谱次灵敏线249.20 nm，并适当偏转燃烧器角度，原子吸收分光光度法测定含铜物料中的高含量铜。

5 % vanillin acetum and perchloric acid as color developer, the content of ursolic acid of kudingcha growed in Hainan province was determined at 548 nm.

用5％香草醛冰醋酸及高氯酸显色，在波长548nm处用分光光度法测定了海南苦丁茶中的熊果酸含量。

Amounts of the glycyrrhizic acid were determined by ultraviolet spectrophotometry at 252 nm wavelengh. Result The best extraction conditions from decoct method were that amount of affusion wate was 200 mL, extract 2 times, boiling time was 5 min, crash time was 20 s.

利用正交试验4因素3水平选择最佳提取条件(包括加水量、提取次数、煮沸时间、粉碎时间、溶剂量、振荡时间、氨水浓度)，用紫外分光光度法在252 nm波长处测定甘草酸含量。

To examine the capacity of alkaline resistance of Albizzia julibrissin Durazz seedlings,the contents of MDA,soluble sugar and proline,and the activity of POD and SOD in Albizzia julibrissin durazz tree body were measured by means of visible spectrophotometry.

为检测合欢幼苗的抗碱胁迫能力，文章试验利用可见分光光度法测定了碱胁迫下合欢幼苗体内的丙二醛、可溶性糖、脯氨酸含量及POD、SOD活性，分析这些生理指标在不同处理浓度、不同处理时间下的变化规律，探求碱胁迫下合欢幼苗的抗逆生理机制。

To explore physiological mechanism of how alkaline stress affects the growth of the Albizzia julibrissin Durazz seedlings, the concentrations of malonaldehyde, soluble sugar and proline, and the physiological indexes as peroxidase and superoxide dismutase were measured by means of visible spectrophotometry.

为探求碱胁迫影响合欢幼苗生长的生理机制，采用可见分光光度法测定合欢幼苗体内丙二醛含量、可溶性糖含量、脯氨酸含量及过氧化氢酶、超氧化物歧化酶活性等生理指标。

Determination of amino acid content in products by spectrophotometric method was investigated in this paper.

采用分光光度法对富含氨基酸类成分的制品中氨基酸含量的测定方法进行了研究探讨。

Methods The acid-base titrations was used for determination of benzoic acid and salicylic acid,UV was used for determination of salicylic acid.

用中和法测定两酸的总量，用紫外分光光度法测定水杨酸的含量，从总量中减去水杨酸的含量即为苯甲酸的含量。

In addition, the effect of different experiment conditions on the determination of nonionic sfrfactants was discussed.

介绍了几种聚氧乙烯型非离子表面活性剂的KI-I2分光光度法测定，讨论不同实验条件对测定的影响。

Methods The thyroid gland inspection was conducted with touch method, arsenic cerium catalysis spectrophotometric method was adopted to detect urine iodine, and the iodine salt determination was conducted by the direct titrimetric method.

甲状腺检查用触摸法，尿碘测定用砷饰催化分光光度法，碘盐测定用直接滴定法。

Methods The insecticide film was used to identify the resistance of German cockroach to four kinds of insecticides.

采用药膜法测定德国小蠊对4种常用杀虫剂的抗性水平，采用分光光度法测定酶活性。

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