bisulfite

简明释义

英[ˌbaɪˈsʌlfaɪt]美[ˈbaɪsəlfɪt;baɪˈsʌlˌfaɪt]

n. [无化] 重亚硫酸盐；酸性亚硫酸盐

英英释义

单词用法

同义词

反义词

例句

1.The active cooking chemicals in the sulfite process are sulfur dioxide, sulfurous acid, and calcium bisulfite.

亚硫酸盐法制浆过程中活性化学物质是二氧化硫、硫酸以及酸性亚硫酸钙。

2.Nonylphenol polyoxyethylene ether was esterified with maleic anhydride and then sulfonated with sodium bisulfite to form nonylphenol polyoxyethylene ether sulfosuccinic acid diester sodium salt.

以壬基酚聚氧乙烯醚为原料，与顺酐酯化再与亚硫酸氢钠磺化，合成了壬基酚聚氧乙烯醚琥珀酸双酯磺酸钠。

3.It is a somewhat well known fact that sodium bisulfite will add to the carbonyl group of a ketone to form a crystalline addition product.

人们已经知道，亚硫酸氢钠可以加成到酮的羰基基团形成一个晶体加成产物。

4.To evaluate the antioxygenic property of the antioxidants, the oxidation reaction rate constants of sodium sulfite, sodium bisulfite and sodium pyrosulfite in aqueous solutions were determined.

为评价抗氧剂的抗氧化能力，测定了抗氧剂亚硫酸钠、亚硫酸氢钠及焦亚硫酸钠在水溶液中与氧反应的速率常数。

5.It was observed early that low concentrations of sodium bisulfite treatment increased net photosynthetic rate in leaves.

人们很早就已观察到低浓度亚硫酸氢钠处理能提高叶片净光合速率。

6.Sodium bisulfite, Homocysteine, a strong inhibitor of ascorbic acid, citric acid inhibition word.

亚硫酸氢钠，半胱氨酸，抗坏血酸为强烈抑制剂，柠檬酸抑制作用稍差。

7.The Formaldehyde sodium bisulfite, which has been listed as the substance with the carsinogensis in the world, can injure the liver and the kidney seriously.

吊白块已被国际上列为能引起致癌作用的物质，可使肝脏、肾脏有较大的损伤。

8.Some samples of sodium bisulfite caused part of the diphenyl-acetic acid to dissolve.

一些样品的亚硫酸氢钠引起的一部分，二苯基乙酸解散。

9.The method was based on the reaction of the vitamin K_3 (menadione sodium bisulfite) or menadione with thiosemicarbazide to form an violet compound in alkaline medium.

本文基于维生素K_3（亚硫酸氢钠甲萘醌）或甲萘醌在碱性介质中与氨基硫脲生成紫色化合物的反应。

10.The wine industry often uses bisulfite to inhibit unwanted microbial growth.

葡萄酒行业常常使用亚硫酸氢盐来抑制不必要的微生物生长。

11.The presence of bisulfite in the sample indicated that it had been treated for preservation.

样品中存在亚硫酸氢盐表明它已被处理以便保存。

12.To prevent oxidation, the chef added bisulfite to the sliced apples.

为了防止氧化，厨师在切好的苹果上添加了亚硫酸氢盐。

13.The addition of bisulfite to the solution helped preserve the freshness of the fruit juice.

在溶液中添加亚硫酸氢盐有助于保持果汁的新鲜度。

14.In the laboratory, we used bisulfite as a reducing agent in various chemical reactions.

在实验室中，我们使用亚硫酸氢盐作为各种化学反应中的还原剂。

作文

The world of chemistry is filled with various compounds that play significant roles in our daily lives. One such compound is bisulfite, which is a salt or ester of bisulfuric acid. Understanding bisulfite and its applications can provide insights into both industrial processes and natural phenomena. In this essay, I will explore the properties, uses, and importance of bisulfite in different fields.Firstly, let’s delve into the chemical structure of bisulfite. The term bisulfite refers to the anion HSO3−, which consists of one sulfur atom, three oxygen atoms, and one hydrogen atom. This unique structure gives bisulfite its distinct properties, making it a versatile compound. It is often found in the form of sodium bisulfite or potassium bisulfite, which are commonly used in various applications.In the food industry, bisulfite is widely recognized for its role as a preservative. It helps to prevent spoilage and discoloration in dried fruits, wines, and other perishable items. By inhibiting the growth of bacteria and fungi, bisulfite extends the shelf life of these products. However, it is essential to note that some individuals may have sensitivities to sulfites, including bisulfite, leading to allergic reactions. Therefore, food manufacturers are required to label products containing sulfites to ensure consumer safety.Moreover, bisulfite is also employed in the textile and paper industries. In textile manufacturing, it is used in dyeing processes to create vibrant colors while preventing unwanted reactions that could affect the final product. Similarly, in the paper industry, bisulfite is utilized in the pulping process to produce high-quality paper by breaking down lignin in wood fibers. This application highlights the compound's significance in enhancing the quality of everyday materials.Beyond its industrial uses, bisulfite has important implications in environmental chemistry. It is involved in the treatment of wastewater, where it acts as a reducing agent to remove harmful contaminants. By converting toxic substances into less harmful forms, bisulfite plays a crucial role in maintaining environmental health. Its ability to neutralize chlorine in water treatment processes further emphasizes its importance in ensuring safe drinking water.In addition to its practical applications, bisulfite also serves as a valuable tool in biochemical research. Scientists utilize bisulfite in molecular biology to study DNA methylation patterns. By treating DNA with bisulfite, researchers can distinguish between methylated and unmethylated cytosines, providing insights into gene regulation and expression. This application underscores the relevance of bisulfite in advancing our understanding of genetics and epigenetics.In conclusion, bisulfite is a multifaceted compound with diverse applications across various fields, including food preservation, textile manufacturing, environmental protection, and biochemical research. Its unique chemical properties enable it to serve as an effective preservative, reducing agent, and research tool. As we continue to explore the complexities of chemistry, understanding compounds like bisulfite will be essential in harnessing their potential for innovation and sustainability. Through ongoing research and responsible usage, we can appreciate the vital role that bisulfite plays in our world today.

化学世界充满了各种在我们日常生活中发挥重要作用的化合物。其中一个化合物是亚硫酸氢盐，它是亚硫酸的盐或酯。理解亚硫酸氢盐及其应用可以为我们提供关于工业过程和自然现象的深入见解。在这篇文章中，我将探讨亚硫酸氢盐的性质、用途和在不同领域的重要性。首先，让我们深入了解亚硫酸氢盐的化学结构。术语亚硫酸氢盐指的是阴离子HSO3−，它由一个硫原子、三个氧原子和一个氢原子组成。这种独特的结构赋予了亚硫酸氢盐独特的性质，使其成为一种多用途的化合物。它通常以亚硫酸氢钠或亚硫酸氢钾的形式存在，这些化合物在各种应用中被广泛使用。在食品工业中，亚硫酸氢盐因其作为防腐剂的作用而广受认可。它有助于防止干果、葡萄酒和其他易腐烂产品的变质和褪色。通过抑制细菌和真菌的生长，亚硫酸氢盐延长了这些产品的保质期。然而，值得注意的是，一些人可能对亚硫酸盐，包括亚硫酸氢盐，有敏感反应，导致过敏反应。因此，食品制造商需要对含有亚硫酸盐的产品进行标识，以确保消费者的安全。此外，亚硫酸氢盐还用于纺织和造纸工业。在纺织制造中，它被用于染色过程中，以创造鲜艳的颜色，同时防止可能影响最终产品的不必要反应。同样，在造纸工业中，亚硫酸氢盐用于制浆过程，通过分解木纤维中的木质素来生产高质量的纸张。这一应用突显了该化合物在提高日常材料质量方面的重要性。除了工业用途外，亚硫酸氢盐在环境化学中也具有重要意义。它参与废水处理，作为还原剂去除有害污染物。通过将有毒物质转化为较无害的形式，亚硫酸氢盐在维护环境健康方面发挥着关键作用。它在水处理过程中中和氯的能力进一步强调了它在确保安全饮用水中的重要性。除了实际应用外，亚硫酸氢盐还是生物化学研究中的宝贵工具。科学家们利用亚硫酸氢盐在分子生物学中研究DNA甲基化模式。通过用亚硫酸氢盐处理DNA，研究人员可以区分甲基化和未甲基化的胞嘧啶，从而提供基因调控和表达的见解。这一应用突显了亚硫酸氢盐在推动我们对遗传学和表观遗传学理解中的相关性。总之，亚硫酸氢盐是一种多面化合物，在食品保存、纺织制造、环境保护和生物化学研究等各个领域有着广泛的应用。它独特的化学性质使其能够作为有效的防腐剂、还原剂和研究工具。随着我们继续探索化学的复杂性，理解像亚硫酸氢盐这样的化合物对于利用它们的潜力实现创新和可持续发展至关重要。通过持续的研究和负责任的使用，我们可以欣赏到亚硫酸氢盐在当今世界中扮演的重要角色。