查询词典 oxalic acid

With the increase of soil pH, Cd desorption decreased rapidly in the presence of oxalic acid and malic acid.

随着pH值升高，草酸、苹果酸以及不含有机酸的对照溶液对红壤中Cd的解吸率都快速下降。

To explore the issue, 16 experiments to dissolve microcline have been conducted using different solutions with 2mol/L NaCl, 0.05mol/L acetic acid, 5ml crude oil or 0.05mol/L oxalic acid (the values are close to those measured in Tarim oilfield waters) and different initial pHs and temperatures.

为探讨该问题，实验配制了含2mol/L NaCl 、0.05mol/L 乙酸、5ml 原油、0.05mol/L 草酸(这些值接近塔里木盆地油田水实测值)，并控制初始 pH 0、温度，进行了16种不同条件下长石溶解作用的模拟实验研究。

One can either soak minerals in oxalic acid at room temperature, or heat them in hot acid.

一个可以浸泡在矿物草酸，在室温或加热，他们在热点酸。

The preparation routing of glyoxalic acid by electrolysis of oxalic acid was established in this paper.

由于其在有机合成中的特殊地位，近几年其用量显著提高。

Nd and Zr are separated into two groups by stripping with concentrated nitric acid and oxalic acid.

文中给出了硝酸、Nd、Zr等在各级的浓度剖面和它们在各物流中的分布。

Succinic acid had the highest content followed by citric, lactic, malic, pyruvic and oxalic acid, in descending order.

有机酸是麦汁和啤酒酸度的主要来源，对啤酒酿造与成品酒的风味具有重要意义。

" Oxalic acid: Colourless, crystalline, toxic carboxylic acid found in many plants, especially rhubarb, wood sorrel, and spinach."

草酸：无色结晶有毒的羧酸类有机化合物。许多植物中有草酸，尤其是大黄、酢浆草和菠菜。

The main intermediates of phenol degradation were benzoquinone and organic acids such as oxalic acid and maleic acid and the final product was carbon dioxide,therefore the technique could be used as a waste minimization process for recycling the treated water.

苯酚降解的主要产物为苯醌、丁烯二酸和草酸，最终产物为二氧化碳，因此该工艺可用于有机物污染最小化处理和处理水的回用。

Based on the problem of various types of catalyst and according to the features of carbonylation catalysts reactions, our team has been designed a series of new metal complexes of benimidazoles, which can be used for carbonylation catalyst of industry. Seven new benzimidazole derivatives were prepared by the o-phenylenediamine、oxalic acid、glycolic acid、monomethyl monopotassium malonate、ethyl cyanoacetate、succinic anhydride. The structures of them were confirmed by IR、Elemental analsis. The crystal structures of d and e were determined by X-ray single crystal diffraction of Germanic Bruker Smart APEX II CCD. The catalysis of them was tested by carbonylation reactions.

本文设计以邻苯二胺和草酸、羟基乙酸、丙二酸单甲酯、氰基乙酸乙酯、丁二酸单甲酯为原料采用PPA催化和无机酸催化法，合成了4种苯并咪唑-2-羧酸衍生物并进行了表征；培养了2个化合物d、e的晶体并测定和讨论了晶体结构；制备了3种未见报道的苯并咪唑金属配合物，对配合物在羰基化法制醋酐-醋酸反应的催化作用进行了初步试验。

In this paper, di-isobutyl oxalate was prepared from oxalic acid and isobutyl alcohol using NaHSO_4 and p-toluenesulfonic acid as catalysts.

以草酸和异丁醇为原料，在酸性催化剂作用下进行酯化反应合成出一种新型柴油十六烷值改进剂——草酸二异丁酯。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。