How to prepare 50 ppm solution of zinc sulphate?
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standard solution of zinc is available from merck or sigma aldrich. If you want to run aas with standard solution for calibration purpose then you must use these otherwise if you want to prepare synthetic waste contain zinc then take zinc oxide and dissolve with some H2SO4(little amount) e.g 1g ZnO require 3-6 drops and then dilute by use DI water.But it should be Stoichiometry of 1000ppm Zn
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