摘要
比较了回流法和分光光度法测定低浓度废水化学需氧量(CODCr)的分析结果,在保证较高的准确度和精密度的前提条件下,后者能大量减少试剂用量,缩短分析时间。
This paper focuses on low concentration wastewater. The the feasibility of utilizing the photoelectric colorimetry to determine the COD_(Cr) of photoelectric colorimentry has better accuracy and precision, and it can greatly decrease the dosage of reagent. The results can be displayed directly without the titration or protracting criterion curve.
出处
《兰州石化职业技术学院学报》
2008年第1期68-69,共2页
Journal of Lanzhou Petrochemical Polytechnic
关键词
CODCR测定
方法比较
低浓度废水
COD_(Cr) measurement
method comparison
low concentration wastewater