Because there are water exists, ammonia and oil acid oxide role will generate precipitation.
因为有水分存在时，氨与油的酸性氧化物作用会生成沉淀。
Results Utilizing lactic acid dissolution and alcohol precipitation technology could prepare granules of chitosan lactate, which had characteristic absorption peak in infrared spectrum.
结果利用乳酸溶解和醇沉淀工艺可制备出壳聚糖乳酸盐颗粒，在红外光谱中具有特征性吸收峰。
Precipitation process of the goethite from hot acid leaching solution of zinc concentrate roast dust was investigated.
研究了从锌焙烧烟尘常压热酸浸出液中沉淀针铁矿的过程。
Microspheric trans aconitic acid imprinted polymers were synthesized via a precipitation polymerization with acetonitrile as dispersion solvent.
以乙腈为分散剂，采用沉淀聚合法合成了反乌头酸分子印迹聚合物微球。
Mineral phosphate precipitation is often recognized to limit the availability of phosphorus in acid soils of tropical and subtropical forests.
热带和亚热带酸性土壤磷矿物的沉淀通常被认为会限制土壤有效磷的供应。
This paper deals with the way of purifying highly purity hyaluronic acid from ox eye by fractionation and organic solvent precipitation.
本文报道采用分级分离并结合有机溶剂沉淀法，从牛眼中纯化出高纯度透明质酸，较其他方法简便，易形成规模。
The fucoidan product was obtained by pretreatment of algae powder with high concentration ethanol, diluted acid extraction, concentration under vacuum, ethanol precipitation and lyophilization.
采用高浓度醇溶液处理羊栖菜粉、稀酸提取、减压浓缩、乙醇分级沉淀和冷冻干燥等单元操作，可以获得褐藻糖胶产品。
The application of side reaction factor to calculation of precipitation solubility was discussed thoroughly in this paper, which was affect by acid effect.
采用副反应系数，对在酸效应影响下的沉淀溶解度的计算进行了详细的讨论。
Ion balance study showed that the precipitation acidity was not decided on acid ion concentrations only, but manly decided on basic ion concentrations which neutralized acid ion in Wuhan city proper.
离子平衡分析表明，武汉城区降水的酸度高低，不仅取决于酸性离子浓度，更重要的是取决于对酸性离子起中和作用的碱性离子的浓度。
Sample preparation consisted of protein precipitation with perchloric acid.
血浆样品加高氯酸沉淀蛋白后分析。
A new process involving ultrasonic separation of electrode materials, acid dissolution, precipitation of cobalt and lithium has been applied to recover metals values from spent lithium-ion batteries.
采用超声波分离电极材料-酸浸-钴锂沉淀新工艺分离并回收了废旧锂离子电池中的有价金属。
After the precipitation was dissolved in hydrochloric acid, indium, bismuth and lead in zinc, zinc powder and zinc carrot were determined by atomic absorption spectrometer.
沉淀用盐酸溶解后，用原子吸收分光光度法(贫燃火焰)测定金属锌、锌粉和锌饼中铟、铋和铅。
The residue was washed with dilute hydrochloric acid solution, The precipitation was dried, purified, and identified by the infrared spectrometry (IR) and high mass spectrometry(HRMS)with DES-HS.
反应产物用稀盐酸溶液洗涤，将所得沉淀干燥后经分离纯化，对纯化产物进行高分辨质谱、红外光谱鉴定。
By analyzing the acid rain information and synoptic charts in South area of the Fujian form 1991 to 2003, the result shows that about half of precipitation is acid in South area of the Fujian.
通过利用1991 - 2003年闽南地区的酸雨资料和天气图进行分析，结果表明：在闽南地区有近一半的降水出现酸雨。
The major problems such as lower recovery ratio of protein, lower yield and purity of finished products existed in the process of isolating soy protein by alkali extraction and acid precipitation.
大豆分离蛋白的碱浸提酸沉淀工艺，目前普遍存在蛋白质回收率低，分离蛋白成品得率低，纯度低的问题。
The major problems such as low recovery ratio of protein, low yield and purity of finished products are found in the process of isolation soy protein by alkali extraction and acid precipitation.
大豆分离蛋白的碱浸提酸沉淀工艺，目前普遍存在成品得率低，纯度低的问题。
The contribution of acid precipitation regional sources and transfering is determined mainly by air pollution condition and meteorology of that area.
酸性降水中局地来源和传输作用的贡献，因地而异，主要取决于当地的大气污染条件和气象条件。
Analyzing the acid rain data and synoptic charts in southern Fujian from 1991 to 2003 shows that about half of the precipitation is acid rain in the area.
通过利用1991 ~ 2003年闽南地区的酸雨资料和天气图进行分析，结果表明：在闽南地区有近一半的降水出现酸雨。
Silicon oxide nanoparticle are prepared by chemical precipitation process, with sodium metasilicate and hydrochloric acid as raw material.
以工业硅酸钠和盐酸为原料，采用化学沉淀法制备出纳米二氧化硅。
Then how to use a computerized chemical equilibrium model to estimate and predict buffer capacity and susceptibility to acid precipitation of water systems are discussed.
然后讨论如何用计算机处理的化学平衡模式估计和预测水体的缓冲容量以及对酸沉降的敏感性。
The generalized oxidation and reduction reaction includes acid-base reaction, precipitation reaction, coordination reaction and ordinarry oxidation reduction reaction.
土壤化学中的酸碱反应、沉淀溶解反应、配位反应和氧化还原反应都属于广义氧化还原反应。
The changing characteristics and chemical components and origin of acid rain in Xiangtan urban area are analyzed according monitoring data of precipitation quality from 2001 to 2005.
根据2001 ~ 2005年湘潭市城区降水环境质量监测数据，对湘潭城区酸性降水的变化特征、离子化学组成、变化趋势和酸雨成因进行了分析。
The TCLP and SPLP of USEPA were designed for assessment of the impact of co-disposition of industrial waste in MSW and the impact of acid precipitation to soil and sole-disposed waste separately.
美国环境保护局（USEPA）的TCLP和SPLP方法分别针对工业废物在城市生活垃圾填埋场的共处置和酸沉降对土壤或单独处置的废物的影响而设计；
A study for preparing neodymium oxide from waste Nd-Fe-B materials was conducted by adopting acid solving-composite salt precipitation process.
利用稀土烧结钕铁硼永磁材料的废料作为原料，选用酸溶-复盐沉淀的化学法，进行了制取氧化钕的实验研究。
Oat bran protein concentrate was prepared by alkali extraction and acid precipitation.
以燕麦麸皮为原料，采用碱提酸沉法制备燕麦浓缩蛋白。
And an optimum extraction process of sesame cake protein by alkaline extraction and acid precipitation was made through response surface method to evaluate the experiment.
建立了快速测定芝麻饼粕蛋白提取率的线性方程，通过响应面优化试验，获得碱提酸沉法提取芝麻饼粕蛋白的最佳工艺。
The researchers are concerning about the effects of acid precipitation on mycorrhizae on the molecular level.
酸沉降对菌根影响在分子水平上的表现受到研究者的关注。
It includes a brief review of chemical thermodynamics that is followed by discussion of acid-base, precipitation-dissolution, coordination, and reduction-oxidation reactions.
首先是简短回顾化学热力学，接著是讨论酸碱、沉淀—溶解、配位和还原氧化反应。
It includes a brief review of chemical thermodynamics that is followed by discussion of acid-base, precipitation-dissolution, coordination, and reduction-oxidation reactions.
首先是简短回顾化学热力学，接著是讨论酸碱、沉淀—溶解、配位和还原氧化反应。
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