分光光度测定

A fully automated simultaneous determination of nitrate and nitrite in water samples by sequential injection analysis based on the Griess diazo-coupling reaction and the formed azo dye for nitrite at 540nm and reduction to nitrite using coppered cadmium column.

用顺序注射分光光度法，通过一次进样。同时测定硝酸根和亚硝酸根。亚硝酸根是根据格里斯重氮－偶联反应，形成偶氮染料后在波长540nm下进行检测。而硝酸根则通过镀铜镉粒还原柱还原为亚硝酸根后进行测定。

Methods 32 rats were euthanized and femurs were removed by disarticulated. The left femurs were heated for 3 minutes, 5 minutes, 10 minutes and 15 minutes with the microwave and the histochemical assay for special lactate dehydrogenase activity was evaluated. The rat bone's biomechanics and the content of calcium tests were carried out.

应用 微波对实验组股骨分别加热3、5、10、15min后，用特殊的乳酸脱氢酶活性染色，判断骨、软骨细胞的活力；用Instron万能材料试验机测定股骨的生物力学并同步记录；用原子吸收分光光度仪测定股骨钙的含量。

Those methods can be used to determine the content of naringin, pectin and biofavonoids in the peel or the extraction in those ranges of linear line.(2) The process of extraction, discoloring, separation of pectin is studied in detail.

同时建立了样品中生物类黄酮的分光光度法测定方法和样品中果胶含量的咔唑显色法测定分析方法。

To determinate the concentration of TiO_2 in functional fiber for labeling purpose,the sample was nitrified with burning and dissolved in mix acid as pretreatment and then its concentration of TiO_2 was determined by spectrophotometric method with ascorbic acid as shelter reagent of Fe~(3+) and Cu~(2+) and diantipyryl methane as developer at wavelength λ=390 nm.

针对功能纤维中添加TiO2的含量测定问题，对功能纤维样品采用高温消化、混酸溶解的前处理方式，以抗坏血酸作Fe3+、Cu2+的掩蔽剂，二安替比林甲烷作为显色剂，用分光光度法在λ=390 nm波长处测定功能纤维中纳米TiO2的含量。

Methods: Spectrophotometric determination of the condiment amino nitrogen, the results of the impact analysis of factors, and with formaldehyde titration method of comparison.

采用分光光度法测定调味品中的氨基酸态氮，对影响测定结果的因素进行分析，并与甲醛滴定方法进行了比较。

Aiming at the problems occurred in the analytical process of determining the total phosphorus in industrial circulating cooling water by ammonium molybdate spectrophotometry and based on the experience summary,the original analytical method has been improved.

针对用钼酸铵分光光度法测定循环冷却水中的总磷在实际分析过程中遇到的一些问题，经过总结经验，改进了原有的分析方法，降低了测定中的干扰因素，提高了一次分析结果的准确可靠性，使分析结果更为准确可靠。

METHODS:The measurment procedure was carried out using pH 8 phosphate salt buffer as solvent.Phenol red was determined by dual wavelength spectrophotometry at 558 nm and 570 nm. Tinidazole was determined by multiple regression spectrophotometry at 290,300,318 nm and 340 nm.

以pH 8磷酸盐缓冲液为溶剂，采用双波长法在558 nm和570 nm测定酚红，以多元回归分光光度法在290，300，318，340 nm测定替硝唑。

The content of conjugated dienes in petroleum products is determined by ultraviolet spectrophotometry.

在化学反应－气相色谱法联合测定含烯汽油中共轭二烯烃质量分数的基础上，建立了用紫外分光光度法测定油品中的共轭二烯烃的含量。

The color surface, texture, the size of pith and the arrange of vascular bundle was observed with freshed, dried drugs and the transverse section, the effective component of echinacoside and acteoside was analyzed with hplc and the amylose was anlyzed with ultraviolet spectrophotometry.

药材性状和结构直接观察肉苁蓉新鲜及晒干或阴干的表面颜色和质地，以及横切面颜色、质地、中心髓部大小及维管束排列等；高效液相色谱法测定药材有效成分松果菊苷及毛蕊花糖苷的含量；紫外分光光度法测定药材粗多糖含量。

Chlorine contents of the representative composition of MSW are quantitatively analyzed by using silver nitride volumetric analysis method, mercury thiocyanate spectrophotometer method and ion chromatography method etc, the results have been tabled and the determination methods are confirmed.

文章首先分析了入炉垃圾中PVC类的主要赋存形态，常见塑料的用途和种类，选用有代表性的垃圾组分采用离子色谱法、硝酸银容量法和硫氰酸汞分光光度法测定垃圾组分含氯量，得到了常见垃圾组分的含氯量数据，确定了不同垃圾组分的含氯测定方法。

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