
[无化] ************
The application of CCD near infrared spectrophotometry (NIR) method to the analysis of red-fuming nitric acid is described.
从化学计量学角度研究了CCD近红外光谱技术在无机物领域分析中的应用。
According to the trait of rocket propellant a kind of protective gloves made of composite fluorine rubber is developed which can be used to protect the skin of red fuming nitric acid worker.
针对火箭推进剂作业的特点,研制了一种以复合氟橡胶为主体材料的防护手套,可用于红烟硝酸作业人员的皮肤防护。
The sample is dissolved in nitric and fluoric-hydro acid adding sulfuric acid, and heating up to fuming, then the matrix element titanium is separated with sodium hydroxide.
试样用硝酸—*********溶解,硫酸冒烟后强碱分离钛、铁、镍离子,其余干扰离子用酒石酸钾钠掩蔽。
This method has been used for many times and similar operation time and product are obtained as that using the treatment with a mixture of sulfuric acid, nitric acid and fuming sulfuric acid.
经过多次试用,其操作时间和得到的结果,与以前使用的硫酸、硝酸加************的方法基本相同。
发烟硝酸(Fuming Nitric Acid) 是一种强氧化性的无机酸,指浓度高于无水硝酸(100% HNO₃)的硝酸溶液。其核心特征在于会释放出可见的棕红色二氧化氮(NO₂)气体,形成“烟雾”或“发烟”现象。以下是详细解释:
发烟硝酸的氧化性源于以下平衡反应:
$$ 2HNO₃ rightleftharpoons N₂O₄ + H₂O
$$
$$ N₂O₄ rightleftharpoons 2NO₂ $$
游离的NO₂作为强氧化剂参与反应,例如与苯反应生成硝基苯:
$$ C₆H₆ + HNO₃ xrightarrow{text{NO₂}} C₆H₅NO₂ + H₂O $$
权威参考来源:
发烟硝酸(Fuming Nitric Acid)是一种高浓度的硝酸溶液,具有强腐蚀性和氧化性。以下是其详细解释:
发烟硝酸指浓度超过86%的硝酸溶液,因其挥发出的二氧化氮(NO₂)气体与空气中的水蒸气反应生成酸雾,呈现明显烟雾现象而得名。根据颜色和成分可分为:
如需更详细的技术参数或应用案例,可参考化学数据库(如)或专业文献。
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