anions

简明释义

英[ˈeɪnaɪənz]美[ˈænˌaɪənz]

n. [化学]阴离子（anion 的复数形式）；[化学]负离子

英英释义

单词用法

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例句

1.When the anions were added, all DNA's characteristic bands have enhancement on the basis of the SERS of DNA.

阴离子的加入使DNA的特征拉曼信号在原来基础上有了新的增强。

2.The soil macro-aggregates can check the leaching of the cations and anions in fertilizer salt and are favourable to use of fertilizer.

土壤大团聚体可以抑制施肥盐阴，阳离子的淋溶，有利于提高对肥料的利用。

3.The instrument is suitable for determing of anions, alkali metals and alkali earth metals in nuclear fuel reprocessing solution and high level liquid waste.

该仪器适用于核燃料后处理工艺溶液和高放废液中的阴离子和碱金属与碱土金属离子的色谱分析。

4.The positively-charged ions in the solution are called cations, and the negatively-charged particles are called anions.

溶液中带正电荷的离子称为阳离子，带负电荷的离子称为阴离子。

5.The result showed that 1 binds well with the halide anions, and forms 1:1 stoichiometric complexes.

结果表明，这个类肽能很好地识别卤素负离子，并与其形成1∶1的络合物。

6.Unlike other types of anions, anionic electrons do not behave as if they were simple charged spheres.

和其它类型的阴离子不同，作为阴离子的电子不像那些简单的带电球体。

7.In a saltwater solution, the presence of anions (阴离子) such as chloride ions helps to conduct electricity.

在盐水溶液中，氯离子等阴离子的存在有助于导电。

8.The laboratory experiment demonstrated how different anions (阴离子) can affect the pH level of a solution.

实验室实验展示了不同的阴离子如何影响溶液的pH值。

9.During the chemical reaction, the anions (阴离子) are attracted to the positively charged electrode.

在化学反应中，阴离子被带正电的电极吸引。

10.In biological systems, anions (阴离子) like bicarbonate play a crucial role in maintaining acid-base balance.

在生物系统中，碳酸氢根等阴离子在维持酸碱平衡中起着关键作用。

11.When dissolved in water, sodium sulfate dissociates into sodium cations and sulfate anions (阴离子).

当溶解在水中时，硫酸钠会解离成钠阳离子和硫酸阴离子。

作文

In the world of chemistry, understanding the behavior of ions is crucial. Ions are charged particles that result from the loss or gain of electrons. Among these ions, there are two main types: cations and anions. Cations are positively charged ions, while anions（阴离子） are negatively charged ions. This distinction is important because it influences how these ions interact with each other and with other molecules.The formation of anions occurs when an atom gains one or more electrons, resulting in a net negative charge. For example, when a chlorine atom gains an electron, it becomes a chloride ion, which is represented as Cl-. This transformation is not just a theoretical concept; it has practical implications in various fields, including biology, environmental science, and materials science.One of the most significant roles of anions is in biological systems. For instance, in cellular processes, anions such as phosphate (PO4^3-) and bicarbonate (HCO3-) are essential for energy transfer and pH regulation. Phosphate groups are critical components of ATP (adenosine triphosphate), which is the energy currency of the cell. Without the presence of these anions, life as we know it would not be sustainable.In addition to their biological importance, anions also play a vital role in environmental chemistry. For instance, the presence of nitrate (NO3-) and sulfate (SO4^2-) ions in water bodies can indicate pollution levels. These anions often come from agricultural runoff and industrial discharges, leading to problems such as eutrophication and acid rain. Monitoring the concentration of these anions is essential for maintaining the health of ecosystems and ensuring safe drinking water.Moreover, anions are integral to various chemical reactions and processes. In electrochemistry, anions participate in redox reactions, where they can either donate or accept electrons. This behavior is utilized in batteries and fuel cells, where the movement of anions and cations between electrodes generates electrical energy. Understanding the properties and behaviors of different anions allows scientists to design better energy storage systems and improve efficiency.Furthermore, anions are also used in the synthesis of materials. For example, in the production of polymers, specific anions can serve as initiators or catalysts. The choice of anions in these reactions can significantly affect the properties of the final product, such as its strength, flexibility, and thermal stability. Researchers are continually exploring new anions to enhance material performance and create innovative applications.In conclusion, anions（阴离子） are more than just negatively charged particles; they are fundamental components that influence a wide array of scientific disciplines. From their essential roles in biological systems to their impact on environmental health and their applications in technology, understanding anions is key to advancing our knowledge in chemistry and related fields. As we continue to explore the intricacies of ions, the significance of anions will undoubtedly remain at the forefront of scientific research and discovery.