滴定法

The value of reference solution is measured by gravimetric titrimetry in this paper. The process of evaluating uncertainty is established according to JJF1059-1999 Evaluation and Expression of Uncertainty in Measurement.

本文应用质量滴定法为硝酸银标准溶液定值，按照国家颁布的国家计量技术规范《测量不确定度评定与表示》JJF1059——1999的规定建立了硝酸银标准溶液不确定度的评定步骤。

Nevertheless, the more classical methods based on titrimetry, colorimetry, spectrophotometry, single or multiple partitions, or changes in physical constants lose none of their previous validities.

但无论怎样，以滴定法、比色法、分光光度法基础的比较经典的方法，单个或多个分类、或物理常数方面的改变（或任何其他形式的检测或分析），并未失去它们原有的有效性。

The molar ratio of sulfate ions to carboxylate ions is determined by conductometric titration method and the molecular weight is tested by high performance gel permeation chromatography. The precision of these two methods is also studied. To improve the detection sensitivity, guanidine hydrochloride is used as the best derivation reagent of 911. A systematic research is done on the optimum derivatization condition of 911 and Guanidine hydrochloride. The M /G ratio of 911 has direct relation to its biological activity.

论文首先对911的基本理化性质进行了系统的分析，以电导滴定法和高效凝胶渗透色谱法分别测定了分子中硫酸根羧酸根的比值和911的分子量，并探讨了两种分析方法的精密度。911分子没有紫外吸收，为提高检测灵敏度，本文采用荧光标记法，通过对三种荧光试剂与几种寡糖和多糖衍生效果的综合比较，最终确定了盐酸胍为最佳衍生试剂，并以911为代表详细探讨了衍生化反应的最优条件。911糖链结构与褐藻胶主链结构类似，以甘露糖醛酸和古罗糖醛酸的嵌段形式存在，分子中M/G比值与911的物理化学性质和生物活性有直接关系。

Antioxidant activity of extract of Eleocharis Tuberosa peel were studied by pyrogallol autoxidation method Feton reaction and Na2S2O-I2 titrimetric method.

用邻苯三酚自氧化法、Feton反应法、Na2S2O3-I2滴定法研究了荸荠皮提取物的抗氧化活性。

The average valence of copper in high temperature superconductor was determined by double iodometric titration,then oxygen content also can be calculated.

双碘滴定法是通过定高温超导氧化物中铜的平均价态，计算出氧化物中氧含量的一种方法。

Three common lipase activity determination methods including alkaly titrition method,ρ-nitrophenol method and copper soap method, aiming at consuming time, accuracy and repeatability, are compared.

比较了碱滴定法、对硝基苯酚法和铜皂法等三种常用的脂肪酶活力测定方法的测定时间、准确性和重复性。

Results: Methods of titration, TLC-scanning and acid dye colorimetry used to analyse of effective constituents has definite limitation.

结果：滴定法、薄层扫描法及酸性染料比色法用于苦参有效成分的分析均具有一定的局限性。

In comparison with the volumetric Karl Fischer titration, coulometry is a micro-method.

与卡尔费休容量滴定法比较，库仑分析法是微量法。

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。

Three common lipase activity determination methods including alkaly titrition method,p-nitrophenol method and copper soap method,aiming at consuming time,accuracy and repeatability,are compared.

比较了碱滴定法、对硝基苯酚法和铜皂法等三种常用的脂肪酶活力测定方法的测定时间、准确性和重复性。

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