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分别用半熔法、热解法、碱熔法，酸蒸馏法分解地质样品，极谱法测定痕量碘。比较了４种分解方法的效果。指出了半熔法为最佳。
The semi-melting method, pyrolysis method, alkali melting method and acid distillation method were respectively used to decompose geological samples. The polarographic method was used to determine trace iodine. The effects of four decomposition methods are compared. Pointed out that the half-melting method is the best.