In the determination of nitrobenzene class, the operation is complicated, the used glass ware is very much, but system error such as zinc dreg absorption and filter paper absorption is not serious.

• 摘要硝基苯类的物质在测定中，不能因操作过程的复杂，使用的玻璃器皿多，就存在着较大的系统误差，如锌渣吸附和滤纸吸附误差。