浓度测定

In order to get a accurate checking result of volatilized hydroxybenzene 's amount in micro-polluted water resource,it brings forward a method of checking low-concentration volatilized hydroxybenzene ,introduces its experimental principles,experimental instruments,medicament,water sample treatment as well as its measuring method.

为了准确检测出微污染水源水中挥发酚的含量，提出了一种检测低浓度挥发酚的方法，介绍了其实验原理、实验仪器和药剂、水样处理及其测定方法，指出采用改进的方法比采用国标的方法更简单易行，提高了监测的准确度和精密度，适用于大批量生活饮用水的日常监测。

Relative partial molar free energy of NaCl in the mixed solvent of water, ethyl alcohol and acetone were calculated.

应用电导法测定了在303 K时NaCl在混合溶剂中的活度系数，计算了NaCl在混合溶剂中的相对偏摩尔自由能，讨论了NaCl电解质溶液活度系数及其相对偏摩尔自由能随浓度的变化关系。

The article presents a simultaneous determination method for three kinds of water-soluble dyes: acid red, acid brown and acid black by solving simultaneous equations using a UV-VIS spectrophotometer.

介绍了利用解联立方程组的方法，在紫外可见分光光度计上实现了对酸性红、酸性棕和酸性黑的混合染料中三种成分浓度的同时测定。

In vitro release of incorporated calcium acid phosphate bone cement was determined.

载药磷酸钙骨水泥体外释放药物浓度的测定。

Silicon in fuel oil reacts with aminosulfonic acid and form a violet component in the medium of tartaric acid and sulfuric acid. The component exhibits maximum absorption at 815nm. Beer's law is obeyed in the range of 0~250μg for silicon dioxide and linear correlation is better.

考察了测定条件：在酒石酸及硫酸介质中，最大波长位于815nm，二氧化硅浓度在0~250μg范围内符合比尔定律，线性关系较好。

The activity coefficient of NaCl in mixed solution of water and 1, 2-propanediol were measured using conductivity method, and the relationship between activity coefficient and concentration of mixed solution were discussed.

应用电导法测定了NaCl在混合溶剂（1， 2-丙二醇和水）中的活度系数，讨论了电解质溶液活度系数与浓度的关系，并计算了NaCl在混合溶剂中的相对偏摩尔自由能，对其相对偏摩尔性质的某些变化规律作了初步的讨论。

The effects of temperature, pH value, the concentrations of NaCl and NH4Cl on the adsorption of L-arginine to 732 cation exchange resin were determined, and its adsorption isotherm at 25℃ was measured.

实验考察了温度、pH值、氯化铵和氯化钠浓度对732阳离子交换树脂吸附L-精氨酸的影响，并测定了25℃时732离子交换树脂吸附L-精氨酸的吸附等温线。

In the absence of coorperative effect, the reaction between lectin molecules and their receptors on cell surface can be described as below when equilibrium is reached:In which LT denotes total lectin concentration, LF free lectin concentration, mva-lency of lectin, ni number of receptors with affinity constant Ki to lectin, CT total lectin concentration.

本文提出一个描述细胞与多价凝集素反应的平衡关系式和用紫外分光光度法测定游离凝集素浓度求受体数量及其与凝集素的亲合常数的方便方法。

The effect of several factors of air agitation such as pore distance, air distributor length Lbp,wind quantum Q,time t and the tube distance of two-tubes distribution on U was measure.

本文对槽内溶液空气搅拌的浓度场进行了研究。在一长方体的有机玻璃的空气搅拌槽内，加入色素，选择有代表性的12个点，定点、定时取样，再作光度测定。这些定性及定量的结果，为优化生产设计提供了一些经验规律和理论上的依据

In order to reduce the apple trees canker effectively,the research compared the activity of pectolases of pathogens under different concentration penicillin which cultivated between sicken trees and PA.

为有效控制苹果树腐烂病，通过对不同浓度青霉素处理后的感病植株的病原菌的果胶酶和人工培养的病原菌的果胶酶活性的测定。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

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如果有任何问题，你可以随时联系我。