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- It was based on the reaction of API with nitrite in acidic medium to form diazo salt and further in alkaline medium to form hydroxydiazene with higher fluorescence intensity. API在酸性介质中与亚硝酸根生成重氮盐化合物,进一步在碱性介质中生成相应的羟基二氮烯,使荧光强度明显增强。 基于该反应,提出了一种操作简便、灵敏度高、选择性好的亚硝酸根荧光测定方法。
- It was found that API can form diazo salt with nitrite in acidic medium and then it would form hydroxydiazene in alkaline medium, leading the significant increase in the fluorescence. 发现API在酸性介质中与亚硝酸根生成重氮盐化合物，进一步在碱性介质中生成相应的羟基二氮烯，使荧光强度明显增强。
- specialized in producing sen sitiaztion diazo salt and high efficiency metal chelating agent. 是专业生产感光重氮盐和高效金属螯合剂的化工厂。
- Salt is a common food preservative. 盐是一种常用的食物防腐剂。
- Acids react with bases to form salts. 酸与碱反应生成盐。
- He spoiled the soup by putting too much salt in it. 他放了太多的盐，把那盘汤糟蹋了。
- My hair kinked up in the salt water. 我的头发在盐水中缠在一起了。
- Add salt, pepper and a dash of vinegar. 加盐、胡椒粉和一点儿醋。
- She is economical in her use of salt when cooking. 她烹饪时用盐很少。
- She lifted the lid of the pot to add some salt. 她掀起锅盖加点盐。
- diazo salts 重氮盐类
- Add salt to correct the seasoning. 加点盐把味道调好。
- Salt has a preservative effect on food. 盐对食物有防腐作用。
- Oops! I put in sugar instead of salt. 啊！我错把糖当盐放了。
- The action of salt on ice causes it to melt. 盐作用於冰而使其融化。
- Salt water and absence wash away love. [谚]远航久别恩情疏。
- Adding salt to food improves the flavour. 食物中加盐可以提味。
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- He put salt into his tea by mistake. 他把盐误放进茶里。
- He's always confusing salt with sugar. 他老是分不清盐和糖。
