DZ/T 0064.62-2021 Methods of analysis of groundwater quality - Part 62: Determination of silicic acid by silicon molybdenum yellow spectrophotometric method (English Version)
1970DZ/T 0064.62-2021 Methods of analysis of groundwater quality - Part 62: Determination of silicic acid by silicon molybdenum yellow spectrophotometric method
1993DZ/T 0064.62-1993 Groundwater Quality Testing Method for Determination of Silicic Acid by Silicon Molybdenum Yellow Colorimetric Method