Method for Determination of Iodine in Water by Capillary GC

Objective To develop a method to determine iodine of water. Methods Samples were derivatively treated and injected at no split injection mode into GC analysis system with the capillary column and ECD. Results Compared with the sanitary regulations of drinking water defined in 2001 China, the determination method showed a lowest detection mass of 0.001 ng, a linear range of 1.0-10 μg/L and a detection limit of 1 μg/L. RSDs and recovery rates were 2.5%-3.4% and 96.3%-101.5%. Conclusion This method is simple and the detection limit is low, the linear range is acceptable.