过硫酸铵也是过硫化钙 (APS)，是一种无机化合物，分子式为 (NH4)2S2O8。 它是一种无色（白色）盐，极易溶于水，比相关的钾盐更易溶解。 它是一种强氧化剂，用作高分子化学中的催化剂、蚀刻剂以及清洁剂和漂白剂。

　　Ammonium persulfate, also known as calcium persulfate (APS), is an inorganic compound with the molecular formula (NH4) 2S2O8. It is a colorless (white) salt that is highly soluble in water and more soluble than related potassium salts. It is a strong oxidant used as a catalyst, etchant, cleaner, and bleach in polymer chemistry.

　　过硫酸铵因其强大的氧化性能而被用于蚀刻印刷电路板上的铜，作为氯化铁溶液的替代品。 这个属性是多年前发现的。 1908 年，John William Turrentine 使用稀过硫酸铵溶液蚀刻铜。 在将铜螺旋放入过硫酸铵溶液中一小时之前，Turrentine 称重了铜螺旋。 一小时后，再次称重螺旋并记录被过硫酸铵溶解的铜量。 这个实验扩展到其他金属，如镍、镉和铁，所有这些都产生了相似的结果。

　　Ammonium persulfate is used to etch copper on printed circuit boards as a substitute for ferric chloride solution due to its strong oxidizing properties. This attribute was discovered many years ago. In 1908, John William Turrentine used a dilute ammonium persulfate solution to etch copper. Turrentine weighed the copper helix one hour before placing it in the ammonium persulfate solution. After one hour, weigh the spiral again and record the amount of copper dissolved in ammonium persulfate. This experiment was extended to other metals such as nickel, cadmium, and iron, all of which produced similar results.

　　空气中含有过硫酸铵的粉尘接触后可能会刺激眼睛、鼻子、喉咙、肺和皮肤。 接触高浓度粉尘可能会导致呼吸困难。

　　Dust containing ammonium persulfate in the air may irritate the eyes, nose, throat, lungs, and skin upon contact. Exposure to high concentrations of dust may cause difficulty breathing.

　　已经注意到过硫酸盐是哮喘作用的主要原因。 此外，有人提出，接触过硫酸铵会导致在美发行业工作的美发师和接待员出现哮喘病。 这些哮喘效应被认为是由半胱氨酸残基以及甲硫氨酸残基的氧化引起的。

　　It has been noted that persulfate is the main cause of asthma. In addition, some people have suggested that exposure to ammonium sulfate can lead to asthma in hairdressers and receptionists working in the hairdressing industry. These asthma effects are believed to be caused by the oxidation of cysteine residues and methionine residues.

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