aldehyde

简明释义

英[ˈældɪhaɪd]美[ˈældəˌhaɪd]

n. 醛；乙醛

英英释义

单词用法

同义词

反义词

例句

1.An aldehyde is an organic compound containing a formyl group.

醛是一种含有甲酰组的有机化合物。

2.Objective:To establish a content assay method of catechu aldehyde in salvia miltiorrhiza oral liquid by HPLC.

目的：建立丹参口服液中原儿茶醛含量的高效液相色谱法（HPLC法）测定方法。

3.The enzyme aldehyde decarbonylase helps remove this group to form a chain of hydrogen and carbon atoms--the hydrocarbon.

乙醛脱羧酶帮助醛脱去羰基形成仅有碳氢原子组成的链，即碳氢化合物。

4.The multiple aldehyde acids were used to decrease the chrome content of the tannery wastewater in chrome tanning process.

研究了在铬鞣过程中，应用多元醛酸帮助减少铬鞣废液中的残留铬含量。

5.This is of course hypothetical, but it is aldehyde fixative for fixed tissue principle.

这当然是假设，但这就是醛类固定液用于固定细胞组织的原理。

6.It was used for catalytic oxidation of crotonic aldehyde to crotonic acid.

综述了巴豆醛催化氧化合成巴豆酸的研究进展。

7.The application of traditional wet strength agent such as aldehyde is restricted because of its impact on environment.

以醛类树脂为代表的传统湿强剂因对环境有不良影响，应用受到限制。

8.The deactivation of hydrogenation catalyst of 3 - hydroxy propionic aldehyde was studied.

对3-羟基丙醛加氢催化剂的失活原因进行了研究。

9.The aromatic aldehyde compounds are a kind of fine chemicals and have the very broad market prospect.

芳香族醛类化合物是非常重要的一类精细化学品，具有很广阔的市场前景。

10.In organic chemistry, aldehydes (醛) are known for their distinctive functional group.

在有机化学中，醛以其独特的官能团而闻名。

11.Formaldehyde is a common type of aldehyde (醛) used in building materials.

甲醛是一种常见的醛，用于建筑材料中。

12.Many aldehydes (醛) are used as flavoring agents in the food industry.

许多醛被用作食品工业中的香料。

13.The smell of aldehyde (醛) can be quite strong when paints or varnishes are first applied.

当油漆或清漆首次涂抹时，醛的气味可能非常强烈。

14.The production of aldehydes (醛) is an important step in the synthesis of various pharmaceuticals.

生产醛是合成各种药物的重要步骤。

作文

Aldehydes are a class of organic compounds that have a functional group characterized by a carbon atom double-bonded to an oxygen atom and single-bonded to a hydrogen atom. This specific structure is what defines the chemical identity of an aldehyde. The simplest example of an aldehyde is formaldehyde, which is used extensively in various industrial applications and as a preservative in laboratories. The presence of the carbonyl group (C=O) makes aldehydes quite reactive compared to other organic compounds. In the world of chemistry, understanding the properties and reactions of aldehydes is crucial for many fields, including organic synthesis, biochemistry, and environmental science. Aldehydes can be produced through several methods, including the oxidation of primary alcohols. This reaction is significant because it allows chemists to convert readily available alcohols into more complex molecules that can serve as intermediates in the production of pharmaceuticals and other valuable chemicals. Moreover, aldehydes play a vital role in the fragrance industry. Many natural and synthetic fragrances contain aldehydes, which contribute to the scent profile of perfumes. For instance, the use of benzaldehyde gives a sweet almond-like aroma, while other aldehydes can impart fresh, citrusy notes. This versatility makes aldehydes essential components in creating desirable scents that appeal to consumers. However, it is important to note that not all aldehydes are safe for human exposure. For example, formaldehyde, while useful, is also known to be a potential carcinogen. This dual nature of aldehydes—being both beneficial and potentially harmful—highlights the importance of handling these compounds with care. In laboratory and industrial settings, strict regulations are often enforced to minimize exposure to harmful aldehydes and ensure worker safety. In addition to their industrial uses, aldehydes also occur naturally in the environment. They can be formed during the breakdown of organic matter and are present in various plants and fruits. This natural occurrence contributes to the aroma of many foods, enhancing our sensory experience when consuming them. For example, the characteristic smell of ripe apples is partly due to the presence of certain aldehydes. To summarize, aldehydes are a fascinating group of compounds that serve multiple purposes in our daily lives, from their roles in industrial applications to their contributions to the fragrance and food industries. Understanding the chemistry of aldehydes, including their reactivity and potential hazards, is essential for anyone working in related fields. The balance between utilizing their beneficial properties while managing their risks is a key aspect of modern chemistry and industry. As research continues, we may discover even more applications for aldehydes, further solidifying their importance in both science and everyday life. In conclusion, aldehydes (醛) are not just simple organic compounds; they are integral to many aspects of our lives, from the scents we enjoy to the materials we use. Their unique properties and versatility make them a subject of ongoing study and application in various scientific fields.

醛是一类有机化合物，其特征是一个碳原子与一个氧原子双键结合，并与一个氢原子单键结合。这个特定的结构定义了醛的化学特性。醛的最简单例子是甲醛，它在各种工业应用中被广泛使用，并作为实验室中的防腐剂。由于羰基（C=O）的存在，使得醛相比其他有机化合物更具反应性。在化学世界中，理解醛的性质和反应对许多领域至关重要，包括有机合成、生物化学和环境科学。醛可以通过几种方法生产，包括对初级醇的氧化。这一反应非常重要，因为它允许化学家将易得的醇转化为更复杂的分子，这些分子可以作为药物和其他有价值化学品生产的中间体。此外，醛在香水行业中也扮演着重要角色。许多天然和合成的香料都含有醛，这些醛对香水的香气特征起着重要作用。例如，苯甲醛的使用赋予了甜杏仁般的香气，而其他醛则可以带来清新、柑橘的气息。这种多功能性使得醛成为创造消费者喜爱香气的必不可少的成分。然而，重要的是要注意，并非所有醛对人类暴露都是安全的。例如，尽管甲醛有用，但它也是一种潜在的致癌物。这种醛的双重性质——既有益又可能有害——突显了小心处理这些化合物的重要性。在实验室和工业环境中，通常会实施严格的法规，以尽量减少对有害醛的暴露，确保工人的安全。除了工业用途外，醛也自然地存在于环境中。它们可以在有机物质分解过程中形成，并存在于各种植物和水果中。这种自然存在使得许多食物的香气得以增强，提升了我们在消费时的感官体验。例如，成熟苹果的特征性气味部分归因于某些醛的存在。总之，醛是一组迷人的化合物，在我们的日常生活中发挥着多重作用，从工业应用到香水和食品行业的贡献。理解醛的化学性质，包括它们的反应性和潜在危害，对于任何在相关领域工作的人来说都是至关重要的。利用其有益特性与管理其风险之间的平衡是现代化学和工业的关键方面。随着研究的持续，我们可能会发现醛的更多应用，进一步巩固它们在科学和日常生活中的重要性。最后，醛（醛）不仅仅是简单的有机化合物；它们在我们生活的许多方面中都是不可或缺的，从我们享受的香气到我们使用的材料。它们独特的性质和多功能性使它们成为各个科学领域持续研究和应用的主题。