查询词典 sulfuric acid

The result shows the excellent condition was in room temperature, 1-1.5 g of potassium iodide, 5mL of 1mol/L sulfuric acid and keep static station for 30 mm.

结果表明：选择在室温下加入1~1.59碘化钾、5 mL 1mol/L硫酸，静置30 min，结果准确，精密度高。

A plastic tank for sulfuric acid in a sealed vented wood box, power supply, and optional AC unit.

一罐硫酸放在一个密闭的通风的木盒里，电源和可选择的AC电源。

The research results showed that two roll press in the alkaline pulp production or modified horizontal belt filter could be used as extraction equipment,and revealed that the optimum conversion conditions were:sulfuric acid concentration 0.2?

研究结果表明，纤维板废水的提取设备可采用碱法制浆生产中所用的双辊挤浆机或经改装后的水平带式真空洗浆机。

With Puna Chicory as raw material, the research was made on the conversion rate of inulin fructose influenced by hydrolysis time, hydrolysis temperature and the concn. of sulfuric acid through the test of single factor, and the optimal technology parameters for inulin hydrolysis were determined by orthogonal experiment integrating with variance analysis and their results were verified.

方法］以普那菊苣为材料，单因素试验研究水解时间、水解温度、硫酸浓度对菊粉果糖转化率的影响，正交试验结合方差分析确定菊粉水解的最优工艺参数，并进行验证。

The characteristics and main concerns in design are described of Chinese first high temperature pipe evaporator in sulfuric acid production by pyrites.

介绍国内第一台硫铁矿制酸高温热管蒸发器的性能特点和设计的主要思路。

It has been observed that pyrocatechol and m-phenylenediamin can sensitively inhibit the discoloration of neutral red oxidation by the H2O2 and in the presence of catalyzer Fe in dilute sulfuric acid solution but the inhibitory effects of two organic compounds can not be added. Based on this research, the advantages of artificial neural network were adopted to handle the experimental data and a new inhibitory kinetic spectrophotometry of simultaneous determination for pyrocatechol and m-phenylenediamin with artificial neural networks was established.

在硫酸性介质中，Fe能够催化H2O2氧化中性红褪色反应，邻苯二酚和间苯二胺都能阻抑该催化氧化褪色反应的速度，研究发现：两者对Fe催化H2O2氧化中性红褪色反应阻抑作用不具有加和性，根据这一现象，用人工神经网络处理非线性体系的优势进行数据处理，从而建立了一种新的测定邻苯二酚和间苯二胺混合物的人工神经网络阻抑动力学光度法。

Time 2.5h, ratio of raw material 1:0.71:0.68 (pyrolusite: pyrite: sulfuric acid)and when pH was controlled about 5.4, the leaching out rate of manganese can get to 90％, Through purification and calcium depositing, the quality of the products was conform to GB1662-82, Experiments(100kg grade)were carried out.

时间2.5小时，原料配比为1：0，71：0.68，最终pH值控制在5.4左右，锰浸出率在90％以上。溶液经净化、沉钙，产品质量符合GB1622-86标准。100公斤级扩大试验验证了小试验，结果可靠，产品质量稳定。

A novel catalytic resonance light scattering method for the determination of traces of formaldehyde in blood plasma was developed. It was based on the fact that potassium bromate reacted with pyronine Y to form association nanoparticles which gave stronger resonance light scattering effect, and formaldehyde can catalyze potassium bromate oxidizing pyronine Y resulting in decreasing of the intensity of resonance light scattering in sulfuric acid.

在稀硫酸介质中，溴酸钾与吡啰红Y能聚集成较大粒径的纳米微粒而使共振光散射增强，而甲醛能催化溴酸钾氧化吡啰红Y而导致体系共振光散射减弱，据此建立了一种灵敏、简单、快速测定血浆中痕量甲醛的新方法。

The content of the composition of polysaccharides was determined by anthranone-sulfuric acid method. Result There was no absorption at 240 nm and 260 nm. The IR spectrum graph of the polysaccharides was similar to Polygonatum odoratum, Radix Ranunculi Ternati and Agrimonia pilosa Ledeb.

结果 该有效多糖组分在240 nm和260 nm处无吸收，其红外光谱图与组方药玉竹、猫爪草和仙鹤草的红外光谱图有很大的相似性，周氏克金岩方中该多糖组分含量为1.41%。

Keywords Radix Ranunculi Ternati;sulfuric acid-anthrone chromatometry;total sugar;polysaccharides

猫爪草；蒽酮-硫酸法；总糖；多糖

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。