GB/T 7489-1987 《Water quality--Determination of dissolved oxygen--Iodometric method》 Related products

GB/T 7489-1987 "Determination of dissolved oxygen in water quality, iodometry" standard describes the method of determining the dissolved oxygen content in water samples by iodometry. The method is suitable for various types of water bodies, including natural water bodies and industrial water. The dissolved oxygen concentration in water is calculated by adding chemical reagents to the water sample, converting the dissolved oxygen to iodide, and then measuring the amount of iodine consumed by titration. This standard specifies in detail the Sample Handling before the test, the formulation of reagents, the operation steps during the test, and the method of data processing. Iodometry is a classic method of determination, although it may be replaced by more advanced techniques in modern water quality analysis, it still provides an effective method and reference standard for the determination of dissolved oxygen in some specific situations.