Headspace single-drop microextraction was performed with a commercially available 10-L syringe containing a guided-PTFE
plunger (Hamilton model 1701 RN, 10 AL).
Iodine generation was carried out in a 40mL amber-vial with a silicone rubber septum.
A domestic microwave oven, Samsung, Model M 9245 (Seoul,South Korea), with a 2450MHz microwave frequency and an output power of 1000W was used for pre-treatment of aqueous samples prior to iodate determination.