查询词典 oxalic acid

Methods 7 kinds of antibiotics, dexamethasone phosphate disodium salt and salicylic acid were separated on a C18 column using methanol: acetonitrile-aqueous solutions:0.01mol/L oxalic acid=l1:22:67 as the mobile phase at a flow rate of 0.8ml/min, with the column temperature 25℃ and detection wave 240nm and 268nm.

采用C18色谱柱(4.6mm×250mm， 5μm)，以甲醇：乙腈：0.01mol/L草酸＝11：22：67为流动相，流速为0.8ml/min，检测波长为240和268nm，柱温为25℃，在此色谱条件下进行检测。

Primary by-products range from benzoquinone to maleic acid and oxalic acid.

中间产物主要为苯醌、马来酸、草酸等，

Malic acid and oxalic acid and their mixed solutions all increased the adsorption of Cd from soil.

混合有机酸交互作用不显著，对Cd解吸的影响约等于各个单独酸的作用之和，但在一些酸度条件下，可存在颉颃作用。

The corrosion behavior of sintered NdFeB in nitric acid,hydrochloric acid,vitriol,phosphate and oxalic acid was studied.

研究了烧结钕铁硼在硝酸、盐酸、硫酸、磷酸及草酸介质中的腐蚀特征。

Cess conditions,parameters and improvement on the production equipments for sythesizing oxalic acid under the oxidizing reaction by nitric acid with the waste mother liquid of gulonic acid as the raw material.

以古龙酸废母液为原料，在硝酸的氧化下生产草酸，开发了废水综合利用的新工艺。

The pot experiment was carried out to study the effect of different organic acids, EDTA, citric acid, oxalic acid and malic acid, on mobilization of Cu in soil and Cu uptake by Leersia hexandra Swartz.

文章采用盆栽试验研究了EDTA、柠檬酸、草酸和酒石酸对土壤中Cu的活化和李氏禾吸收Cu的影响。

The results indicated that the concentration of Cu in the soil is 220.16 mgkg^(-1) contrast to the CK 500.31 mgkg^(-1) significantly decrease when the concentration of EDTA in the soil is 2 mmolkg^(-1) that explains EDTA treatment significantly decreased soluble Cu content in soil because of translating into Cu of water distill floating on the surface of soil and most accumulating around root. Contemporary, application of EDTA to the soil significantly enhanced mobilization of Cu in soil and increased Cu uptake in shoot of Leersia hexandra Swartz., the highest concentration in the leaves 336.54 mgkg^(-1) is 4 times higher compared with the ck 80.34 mgkg^(-1). However, citric acid, oxalic acid and malic acid inhibited mobilization of Cu and less significantly affected shoot Cu accumulation.

结果表明，当向土壤中施加质量摩尔浓度为2mmolkg^(-1)的EDTA时，土壤中Cu质量分数为220.16mgkg^(-1)与空白土壤中500.31mgkg^(-1)相比明显减少，说明EDTA可以极显著的降低土壤中的铜质量分数，使其转化成水提取态的Cu浮于土壤表面，并大部分聚集在根部周围，同时向土壤中施加EDTA不但促进了对Cu的活化而且显著提高了李氏禾对Cu的吸收，叶中最高质量分数达到336.54mgkg^(-1)是对照中80.34mgkg^(-1)的四倍；而柠檬酸、草酸和酒石酸则抑制了Cu的活化，但对李氏禾地上部分的Cu质量分数影响不大。

A new method for synthesis of rosolic acid is introduced in this thesis: under solvent-free conditions, grinding the mixture containing phenol, oxalic acid and copper salt catalyst and then irradiated by MW to produce rosolic acid .

本文主要介绍了一种新的制取玫红酸的方法：在无溶剂的条件下，通过研磨将苯酚，草酸和催化剂混合均匀，再由微波作用，直接合成玫红酸。

The degradation of 2, 4-dichiorophoxyacetic acid (2, 4-D) by ozonation combined with sonication (03/US) was investigated. Based on the authors' first paper about the synergistic effect of ozone and US, this paper presents intermediate products of 2, 4-D degradation. The main intermediates were 2, 4-dichiorophenol, benzopuinone, hydroquinone and organic acids, such as maleic acid and oxalic acid and soon.

利用臭氧超声波联合工艺对苯氧羧酸类除草剂2，4-D进行降解研究，在前文探讨臭氧超声波之间协同效应的基础上，确定其中间产物种类主要有2，4-二氯苯酚、苯醌、氢醌以及小分子酸如顺丁烯二酸、草酸、甲酸、乙酸等。

The content of the three samples-acetic acid ,oxalic acid and citric acid was determined by second- time derivative.

利用二级微商法对醋酸、草酸、柠檬酸等3种样品含量进行了测定，对此分析结果表明，该方法是一种理想的、快速简便的、准确度高的电位滴定方法

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。