Rapid testing method for testing content of chloride ions in sand

• Main Authors: ZHANG JIE, YANG BAIQING, XU ZHENHUA, CHAI MINGMING, WU BIN, JIANG RONGQI, JIN QI, WANG FENGLIN, XUE WENYUN, JI QUHUAN, JIN WEIPING, WANG SONGLIN, ZHANG YAO, ZHAO YUAN, XU KE, DING SHUANGSHUANG, LI JUNCHENG, XU WEIXIA
• Format: Patent
• Language: Chinese; English
• Published: 31.01.2020
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The invention discloses a rapid testing method for testing the content of chloride ions in sand. The testing method comprises the following steps: uniformly stirring dry sand to be detected, and weighing 500g of the dry sand as a detection sample; adding the detection sample into 500mL of distilled water to prepare a sand-water mixed solution, fully and uniformly stirring, standing for 0.5-2 hours, and preparing a silver nitrate reagent with a corresponding concentration according to the detection temperature, the standing time of the sand-water mixed solution and the qualified chloride ion concentration required by customers; putting 50mL of supernatant filtrate of the sand-water mixed solution into a conical flask; adding 1mL of potassium chromate indicator with the concentration of 5% (W/V) into the conical flask, shaking the conical flask, slowly adding 5mL of silver nitrate reagent with the preparation concentration corresponding to the detection condition at the same time, and observing and recording th