The pre-disposal equipment of sulphide in water with spectrophotometer was improved, and it is convenient to be operated. The recycling rate can reach at 92-99%.

• 对亚甲基蓝分光光度法测水中硫化物的预处理装置进行改进,改进后的装置操作较为简便,回收率达92%25-99%25。