By conducting acid tests, developer use level tests, and reaction time and temperature tests, the latter method is modified, and its precision and accuracy are improved, satisfying the requirements of analysis in production.

• 通过酸试验、显色剂用量试验、反应时间与温度等试验，对二乙酰单肟法进行了改进，提高了方法的精密度和准确度，满足了生产分析要求。