Estimation of Biochemical Oxygen Demand Based on Dissolved Organic Carbon, UV Absorption, and Fluorescence Measurements

Table 4

Multiple linear regression models for predicting BODs of river waters and wastewaters.

Sample	Multiple regression model
River waters	BOD5mgL^−1=49.93536⋅UV254^a+1.23⋅10^−5⋅FI270∼300nm+3.32⋅10^−7⋅FI310∼370nm−2⋅10^−06⋅FI370∼400nm−2.4⋅10^−06⋅FI400∼530nm+0.612293
Wastewaters	BOD5mgL^−1=2.066723⋅DOC+113.2703⋅UV254^a+2.93⋅10^−5⋅FI270∼300nm+1.96⋅10^−6⋅FI310∼370nm−0.00011⋅FI370∼400nm+2.14⋅10^−5⋅FI400∼530nm+16.6394