How to detect K, Na, Ca, Mg with flamespraying wasresearched. To adjustflame andto add certain saltsto eliminatethe disturbanceofalkalimetalionscanreach asatisfied analysisresult. Thedetectionlimitof K, Na, Ca, Mg were 0.005 mg/L, 0.01mg/L, 0.10 mg/L and 0.01 mg/L. Samplerecovery were 93%,106%,84% and 112%. |