nitrite

简明释义

英[ˈnaɪtraɪt]美[ˈnaɪtraɪt]

n. 亚硝酸盐

英英释义

单词用法

同义词

反义词

例句

1.What is the safe dose of sodium nitrite?

什么是安全剂量的亚硝酸钠？

2.Nitrite is used for curing meat.

亚硝酸盐一般用于加工肉类食品。

3.Nitrite, which is used in cured meats, also functions as a bacteriostat.

用于俺肉的亚硝酸盐也具有抑菌剂的功能。

4.In water, nitrogen exists in form of organic nitrogen, ammonia nitrogen, nitrite and nitrate.

在水中，氮是以有机氮、氨态氮、亚硝酸氮和硝酸氮的形式存在的。

5.Results There nitrite was detected from the gastric juice of the poisoning patients.

结果在患者的洗胃液及呕吐物中均检出亚硝酸盐。

6.Both schemes indicate that the nitrite ion is not produced by the reduction of the nitrate ion.

这两种方案都表明亚硝酸根离子不是由硝酸根还原生成的。

7.The presence of nitrite in drinking water can indicate contamination.

饮用水中存在亚硝酸盐可能表明污染。

8.Food preservatives often contain nitrite to prevent bacterial growth.

食品防腐剂通常含有亚硝酸盐以防止细菌生长。

9.High levels of nitrite can be harmful to aquatic life.

高浓度的亚硝酸盐对水生生物是有害的。

10.Some cured meats contain nitrite for color preservation.

一些腌制肉类含有亚硝酸盐以保持颜色。

11.Testing for nitrite levels is essential in aquaculture.

在水产养殖中，检测亚硝酸盐水平是至关重要的。

作文

Nitrites are chemical compounds that play a significant role in various biological and industrial processes. They are often found in food preservation, agriculture, and even in our own bodies as part of metabolic processes. The term 'nitrite' refers specifically to the anion NO₂⁻, which is derived from nitrous acid. Understanding the function and implications of nitrites is crucial for both health and environmental reasons. In the context of food preservation, nitrites are commonly used in curing meats. They help to inhibit the growth of harmful bacteria, particularly Clostridium botulinum, which can cause severe food poisoning. The use of nitrites in processed meats, such as bacon and sausages, not only enhances the flavor but also gives these products their characteristic pink color. However, there has been growing concern over the safety of consuming nitrite-treated foods. When nitrites are exposed to high heat during cooking, they can form nitrosamines, which are potentially carcinogenic compounds. This has led to debates about the acceptable levels of nitrites in food products and the need for regulations to ensure consumer safety. On the agricultural front, nitrites are utilized in fertilizers to enhance plant growth. They serve as a source of nitrogen, which is essential for the synthesis of proteins and nucleic acids in plants. However, the excessive use of nitrogen-based fertilizers can lead to environmental issues, such as water pollution and eutrophication. When rainwater washes these fertilizers into rivers and lakes, it can cause algal blooms that deplete oxygen levels, harming aquatic life. Therefore, understanding the balance between using nitrites for agricultural benefits and minimizing their environmental impact is vital for sustainable farming practices. Moreover, nitrites also occur naturally in our bodies as a result of the metabolism of nitrates, which are found in various vegetables, especially leafy greens. Nitrates are converted into nitrites by bacteria in our mouths and intestines. Interestingly, this process has been linked to several health benefits, including improved cardiovascular health. Nitric oxide, which is produced from nitrites in the body, helps to relax blood vessels, improving blood flow and reducing blood pressure. This highlights the dual nature of nitrites; while they can pose risks in certain contexts, they can also provide health benefits when consumed through natural sources. In conclusion, the compound known as nitrite (亚硝酸盐) is a double-edged sword. It serves essential functions in food preservation and agriculture, contributing to food safety and plant growth. However, the potential health risks associated with its consumption in processed foods and the environmental concerns related to its agricultural use cannot be overlooked. As consumers and citizens, it is important to stay informed about the role of nitrites in our lives and advocate for practices that prioritize health and sustainability. Balancing the benefits and risks of nitrite (亚硝酸盐) will be key to ensuring a safe and healthy future for ourselves and the environment.