Abstract： According to the experimental principle of GB 31893—2015 “Limit and determination of the water-soluble chromium (Ⅵ) content for cement”, the rapid detection method for water-soluble chromium (Ⅵ) in cement was studied by optimizing the experimental steps. The cement sample was dispersed in a sealable plastic bottle with the water-cement ratio of 2:1, and the bottle was held upside down and shaken for 15 times. After static settlement for about 3 min, the supernatant was separated out. The filtrate was extracted by a water microporous filter with a diameter of 25 mm and a filter membrane aperture of 0.45 μm. Finally, the filtrate was collected in a syringe, then filtrate was measured with a portable visible spectrophotometer after color reaction. The test results proved that this method could expand the application range of the standard and could be used as a reference method for rapid screening and detection.
2023, Vol. 0 
