Simultaneous Determination of Sulfate and Phosphate in Sodium Chloride by ICP-OES
Objective:To establish a method for simultaneous determination sulfate and phosphate in sodium chloride by ICP-OES.Methods:The established method was proved by methodology validation such as precision,recovery,precision and linearity.Finally,3 batches of samples which derived from two factory were determined by the established method and the original method.Results:The calibration curve was liner over the range of 0µg·mL-1～14µg·mL-1(r=0.9977)for sulfate,0µg·mL-1～14µg·mL-1(r=0.9989)for phosphate.The average recoveries of sulfate and phosphate were 107.1%and 100.2%.Conclusion:The established ICP-OES method is specific,simple,and rapid.It is the suitable of Simultaneous determination of sulfate and phosphate in the sodium chloride.
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