1、 Experimental purpose

Detection of chloride ions and sulfate ions by ion chromatography

2、 Experimental content and principle

Sample pretreatment, zirconium carbonate solid acidification, dissolution, neutralization, filtration, and constant volume; Machine testing.

3、 Main instruments and equipment

YC3000 ion chromatograph (Qingdao Eren Chromatography Technology Co., Ltd.), EGP-8 positive pressure exhaust device, XZ-1 vacuum pump.

4、 Operation method and experimental process

Sample pretreatment: Accurately weigh 2.0000g of solid zirconium carbonate powder and place it in a 500ml beaker. Slowly add 8ml of nitric acid solution with a mass concentration of 65% -68%, stir with a glass rod until the solid is fully dissolved and the solution is clear and transparent. Titrate with a prepared saturated potassium hydroxide solution until the solution becomes neutral, and a white flocculent precipitate appears in the solution. Drain with a glass rod, pour the product from the beaker into the XZ-1 vacuum pump, clean three times, filter, and dilute the solution in the conical flask to 1000ml by 2.5 times before testing.