摘要
采用密封消解法快速测定了乌鲁本齐石化公司的石油污水中的CODCr值。通过测定标准物质化学需氧量的消解时间、催化剂用量等因素对消解过程的影响,确定出该方法测定CODCr的最佳实验条件,并通过实际水样进行验证。结果表明:选择5 mL水样,硫酸银用量为国家标准的25％,在恒温烘箱中仅需35 min即可完成消解。所测CODCr值与标准法测定值基本吻合,通过统计检验认为该方法的准确度较好,与国家标准方法之间不存在系统误差。
The sealed elimination method was used to detect chemical oxygen demand （COD） of petroleum-polluted water from Urumchi Petrochemistry Company. The elimination time and catalyst consumption of the chemical oxygen demand of a standard substance was determined. The optimal experimental conditions were determined and verified by practical water sample. It was shown that with 5 mL water sample and 25% equivalent silver sulfate of the national standard, the elimination time was only 35 min. The CODcr values by this method were in accord with the standard method. Statistic test showed that the method was accurate and no systematic error was found between this method and the standard one.
出处
《精细石油化工》
CAS
CSCD
北大核心
2006年第5期14-17,共4页
Speciality Petrochemicals
关键词
石油污水
化学需氧量
密封消解法
国家标准
统计检验
petroleum polluted water
chemical oxygen demand
sealed elimination method
national standard
statistic test
