查询词典 titration

Results The IgY solution obtained from water dilution method has specific binding with Naja atra and the titration increased coinciding with purity.

结果鸡卵黄经水溶法的粗提物与中华眼镜蛇毒即有较明显沉淀反应，其效价随着纯度的提高而增强。

Objective To establish a method for uncertainty evaluation in nonaqueous titration with perchloric acid.

摘 要 目的通过高氯酸液滴定药物含量不确定度的评价，建立普遍适用于滴定法测定药物含量的不确定度评定方法。

By use of titration analysis, the thesis investigated various factors such as isocyanate, PE molecular weight, reacting substance molecular ratio, reacting temperature and time etc. influencing upon prepolymerization step. It was found that 2, 4-tolulene diisocyanate and 4, 4'diphenylmethane diisocyanate is more rapidly reacted with PE600 than HDI. With PE molecular weight increasing, the reacting temperature or time should be raised or extended relevantly. Thus PE2000+2HDI pre-polymerization should be better carried out under some catalyst, for example, Triethylene diamine , Dibutyltin dilaurate and Tin octoate were used.

首先采用滴定分析方法对WRPU预聚反应的影响因素进行了研究：芳香族二异氰酸酯TDI、MDI比脂肪族二异氰酸酯HDI反应活性高，其中TDI在反应初始阶段的反应速率比MDI快，不过随着反应的进行，MDI比TDI反应速率加快，这主要是因为TDI分子中的两个-NCO反应活性差异大所致；二元醇分子量越大，反应速度越慢；聚醚二元醇比聚酯二元醇的反应速度快；当分子量超过2000的二元醇与HDI进行预聚反应时，需借助适当的催化剂来加快反应速度，从而使预聚反应能够顺利进行，分别选择DABCO、TOA和DBDTL三种催化剂进行催化反应，发现不同的催化剂，其催化效果相差较大。

The effects of different methods and conditions on the structure and surface properties were studied by XRD, nonaqueous solution titration, and decoloring performance on orcein dye.

用XRD、非水溶液滴定法及对红色染料的脱色能力等研究了制备方法及条件变化对蒙脱石层间结构、表面性质的影响。

A new oscillographic titration method for the determination of phosphorus content in laundry powder is described.

报告了洗衣粉中磷测定的示波滴定新方法。

The thesis studied a new method, oscillographic titration to determine protein content in milk powder.

研究了乳粉中蛋白质含量的示波滴定法。

The comparison for advantages and application scopes of both methods were carried out. The results show that the former is quicker, but the adding amount of oxalic acid needs to be controled in the range of 1.2-1.7 times of theoretical value and the content of iron in the alloy is required to be below 0.5%. While the later is overelaborate, but it can completely separate magnesium from iron with sharp titration end point.

分析对比了两种方法的适用范围，结果表明，草酸分离稀土方法简便快速，但草酸用量需控制在理论用量的1.2~1.7倍，且合金中铁含量要求小于0.5%；氢氧化铵分离稀土方法分析流程比前者长，但可将主要干扰杂质铁分离完全，终点敏锐。

The paper studies the color range of papaver rhoeas red pigment under pH values, and compares it with the other indicators by the acid-base titration.

本文研究了虞美人色素在不同pH值溶液中的颜色变化，并通过虞美人色素和其它指示剂进行酸碱滴定的比较，结论为：虞美人色素能准确指示酸碱滴定的终点，其变色范围pH 6.33~8.25，颜色由紫红色变为棕色

Using the KMnO4 titration method to detect the catalase activity and the sulfosalicylic acid method to detect the free proline content, the changes of catalase activity and free proline content of plants in Kaili area under air pollution were studied with the representative plants such as Camellia oleifera, Pinus massonina, Cunninghamia lanceolata, Woodwardia japonica and Dicranopteris pedata in Kaili area as research subjects.

方法］以凯里地区的代表性植物（油茶、马尾松、杉树、狗脊蕨和铁芒萁）作为研究对象，采用KMnO4滴定法测定过氧化氢酶的活性，采用磺基水杨酸法测定游离脯氨酸的含量，研究大气污染影响下凯里地区植物过氧化氢酶活性、游离脯氨酸含量的变化情况。

In this method, titration with standard solution of perchloric acid in glacial acetic acid was used.

建立了在非水条件下快速测定食品中糖精钠的方法，以冰乙酸为溶剂，用高氯酸的冰乙酸标准溶液滴定，经过反复试验，相对标准误差0.92%~2.93%，加标回收率97.13%~100.3%，结果表明；该法定量分析准确，精确度高，可靠性和重现性好。

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。