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测定水中微量氰化物的方法有:吡啶联苯胺比色法、异烟酸吡唑酮法、硝酸银容量法等。吡啶联苯胺比色法,由于使用大量的具有恶臭的吡啶,多数单位目前已不再采用该法;硝酸银容量法的灵敏度较差,只有当氰化物含量大于1毫克/升时才能应用,所以受到一定的限制;异烟酸吡唑酮法操作比较烦杂,受温度的影响较大,结果的精密度较差。我们根据有关资料,在异烟酸吡
Determination of trace amounts of cyanide in water are: pyridine benzidine colorimetry, isonicotinol pyrazolone method, silver nitrate capacity method. Pyridine benzidine colorimetry, due to the use of large amounts of malodorous pyridine, is no longer used in most units; the silver nitrate capacity method is less sensitive and can only be applied when the cyanide content is greater than 1 mg / l Subject to certain restrictions; isonicotinol pyrazolone method is more complicated operation, affected by the temperature greater, the results of the poor precision. We based on the information, in isonicotinate pyridine