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本文叙述了一个测定天然水，岩石、土壤和植物中碘的方法。本方法是根据谢德尔—柯尔蜀夫反应，即碘对As~(3+)和Ce~(4+)之间反应的催化作用。此方法已被泰克尼柯自动分析仪所采用。此方法有足够的速度，每星期（40小时）可测定100—125个样品。样品用碳酸钠—碳酸钾与MgO熔融后不作预先浓缩可测定少至0.04ppm的碘。方法的精密度为当岩石样品含0.22ppm碘时，偏差系数是25.9％，当岩石样品含4.46ppm碘时，偏差系数是5.08％。该法很理想地适用于地球化学探矿。
This article describes a method for the determination of iodine in natural water, rock, soil and plants. The method is based on the Scheidell-Korschoff reaction, ie the catalytic effect of iodine on the reaction between As ~ (3+) and Ce ~ (4+). This method has been used by Technicon Auto Analyzer. This method is fast enough to measure 100-125 samples per week (40 hours). As little as 0.04 ppm of iodine can be measured without the prior concentration of the sample after it is fused with sodium carbonate-potassium carbonate and MgO. The precision of the method was 25.9% for the rock sample containing 0.22 ppm iodine and 5.08% for the rock sample containing 4.46 ppm iodine. This method is ideal for geochemical prospecting.