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本研究主要为废水中痕量汞的浓缩分离方法。对使用硝酸-L-半胱氨酸和使用硝酸(或硫酸)-重铬酸钾为汞的保存剂时,对活性炭的捕集效果作了比较。捕集后,从活性炭上脱出汞,使进入原子吸光分析仪测定,测定用的装置为加热气化金-汞齐捕集方式。基本操作如下:在一三角烧瓶中盛100 ml的硝酸-L-半胱氨酸或硝酸(或硫酸)-重铬酸
This study mainly concentrates and separates trace mercury in wastewater. For the use of nitric acid-L-cysteine and the use of nitric acid (or sulfuric acid) - potassium dichromate as a preservative for mercury, the capture effect of activated carbon was compared. After the capture, the mercury was released from the activated charcoal and allowed to enter the atomic absorption spectrometer for determination. The apparatus used for the determination was a heated gasification gold-amalgam trap. The basic operation is as follows: 100 ml of nitric acid-L-cysteine or nitric acid (or sulfuric acid) in a conical flask - dichromic acid