吉林省主要河流不同水期的高锰酸盐指数、化学需氧量和总有机碳的相关关系比较

Comparison among Relationships between COD and TOC,PV and TOC,COD and PV of Typical River in Jilin Province at Different Periods

通过在2005～2006年内枯、平、丰不同水期对吉林省的主要河流采样，测定了其高锰酸盐指数（PV）、化学需氧量（COD）和总有机碳（TOC），并用最小二乘法对PV-TOC，COD-TOC，COD-PV进行线性回归和相关关系的显著性检验，建立了吉林省主要河流不同水期PV—TOC，COD-TOC及COD—PV的定量关系模型．结果表明，在不同水期，吉林省主要河流的PV和TOC之间、COD和TOC以及COD和PV之间，均存在显著的线性相关，但其相关关系存在较大差异．

Dozens of water samples were taken from typical rivers in Jilin Province at different periods in 2005 and 2006, and the permanganate value （PV）, chemical oxygen demand （COD） and total organic carbon （TOC） values were measured separately. The quantitative relationship models between PV and TOC, COD and TOC, COD and PV of typical rivers in Jilin Province at different periods were established via linear regression obtained with least square method and the correlation test was carried out. The results indicate that there are significant linear correlation between PV and TOC, COD and TOC, COD and PV values of these rivers water samples at different periods. There are differences in the relationships between PV and TOC, COD and TOC, COD and PV of these rivers at different periods.