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重新考察了影响比色法测定氰化物结果的各种因素，发现滴加酸中和碱这一操作步骤和水浴温度及时间对测定结果影响最大，略去滴加酸操作并严格控制水浴温度和时间可使测定结果的相对标准差从１０％～２２．８％降至＜５％。
Re-investigated the impact of colorimetric method for the determination of cyanide results of various factors and found that dropping acid and alkali operation steps and water bath temperature and time on the determination of the greatest impact on the results, omitted the acid addition and strict control of the bath temperature and Time allows the relative standard deviation of the measurement results to be reduced from 10% to 22.8% to <5%.