This standard specifies the determination method of zinc content in phosphorus-zinc pre-coating solution, that is, atomic absorption spectrometry. This standard is applicable to the determination of the zinc content range of 0.1-20mg/L in the phosphorus-zinc pre-coating solution, and also applicable to the determination of the zinc content in various industrial water, raw water and domestic water.
GB/T 16634-1996 history
2021GB/T 14637-2021 Determination of copper,iron and zinc in industrial circulating cooling water and scale—Atomic absorption spectrometric method
2007GB/T 14637-2007 Industrial circulating cooling water and scale.Determination of copper,zinc.Atomic absorption spectrometric method
1996GB/T 16634-1996 Industrial circulating cooling water--Determination of zinc for phosphorus-zinc prefilming fluid--Atomic absorption spectrometric method
GB/T 16634-1996 Industrial circulating cooling water--Determination of zinc for phosphorus-zinc prefilming fluid--Atomic absorption spectrometric method was changed to GB/T 14637-2007 Industrial circulating cooling water and scale.Determination of copper,zinc.Atomic absorption spectrometric method.