萃取气相色谱法测定水中无机碘

Extractioh Gas Chromatograph for Determining Inorganic Iodine in Drinding Water

用丁酮为衍生试剂，采用萃取气相色谱法测定饮用水中微量无机碘。结果表明：方法的检测限为０．２３μｇ／Ｌ变异系数在４．５－８．２％，回收率在８１．１－１１４％之间。用本法测定不同水样中微量无机碘，取得满意结果。

etone used as a deriative reagent,inorganic iodine in drinking water was determined bymeans of extraction gas chrornatograph.The result shows that lowest detection limit of thismethodis 0.23ug/L,the coefficient of variation is 4.5%-8.2%and that its recover rate is81.1%-114%。 It is indicated that a satisfactory result can be obtained when this method isused to determine the trace inorganic iodine in different water samples.