Determination of water soluble chloride in feed by ion chromatography

This experiment established a method for the content determination of the water soluble chloride in feed by ion chromatography.The samples were extracted by water,then were carried out on a metrosep A supp 4-250/4.0 anion analysis column using 3.2 mmol/L Na2CO3 and 1.0 mmol/L Na HCO3 as eluent solution at a flow rate of 1.0 m L/min.The results showed that the correlation coefficient was above 0.999 in the range of 4 ~ 100 μg/m L,and the detection limit was0.04 μg/g.The recovery rate was in the range of 91.7% ~ 100.2% by adding different concentrations of standard substance.In conclusion,this method was operated easily,with very high sensitive and reliable characteristic,and it was skillful and efficient for determination of large batches of samples.