目前,测定微量碘的方法有比色法,电化学法,气相色谱法等。其中比色法操作复杂;电化学法干扰因素多;气相色谱法多用剧毒且不易得到的硫酸二甲酯为衍生试剂。我们根据文献报道的方法,用丁酮为衍生试剂,提出了一种简单、快速、可靠、实用的测定水中微量碘的方法。 At present, the method of determination of trace iodine colorimetry, electrochemical methods, such as gas chromatography. Which colorimetric method is complex; Electrochemical interference factors; gas chromatography with highly toxic and difficult to get dimethyl sulfate derivative reagent. According to the methods reported in the literature, butanone was used as a derivatization reagent, a simple, rapid, reliable and practical method for the determination of trace amounts of iodine in water was proposed.