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用１３１Ｉ示踪和中子活化法测定了碘在生物样品酸消解和灰化处理中的回收率。结果表明：在不同酸消化条件下碘的回收率差别很大。当ＨＮＯ３和ＨＣｌＯ４作消化液、用冷却水回流消解时，生物样品中碘的回收率可达９５％以上。用ＫＯＨ在６５０℃灰化时，回收率可达９０％以上。
Recoveries of iodine in acid digestion and ashing treatment of biological samples were determined by 131 I tracer and neutron activation. The results showed that the recovery rate of iodine under different acid digestion conditions varies greatly. When HNO3 and HClO4 as digestion solution, with cooling water reflux digestion, the recovery of iodine in biological samples up to 95%. With KOH at 650 ℃ ashing, the recovery rate of up to 90%.