Table 1.
Source water | I | II |
---|---|---|
DOC (mg/L) | 2.45a | 3.00 |
UV254 (cm−1) | 0.0335a | 0.155a |
SUVA (L/mg∙m)b | 1.37 | 5.17 |
pH | 6.87 | 8.50 |
Alkalinity (mg/L as CaCO3) | 23.0a | 90.0 |
Bromide (μg/L) | 26.5a | 2000 |
The dissolved organic carbon (DOC), UV absorbance at 254 nm, and bromide concentration were measured with a total organic carbon analyzer (Model TOC-Vcsh, Shimadzu), a UV/visible spectrophotometer (GE healthcare, Ultrospec 4300 pro), and an ion chromatograph (Dionex DX500), respectively; and the alkalinity was determined per the Standard Method (APHA et al., 2012).
Specific UV absorbance (SUVA) was calculated by dividing a sample’s UV254 absorbance (in cm−1) by the DOC concentration (in mg/L), and then multiplying by 100.