Table 1 Physio-chemical indicators and analysis methods

Water temperature

Thermo ORION 3 STAR

pH

Thermo ORION 3 STAR

DO

HACH HQ 30d

Chroma

XINRUI-SD9012AB

Turbidity

HACH-2100AN

UV₂₅₄

VARIAN-CARY50

DOC

GE 5310CTOC

COD_Mn

Acidic potassium permanganate titration

TN

Alkaline potassium persulfate

TP

Molybdate spectrophotometric method

Chlorophyll-a

Thermal ethanol extraction spectrophotometric method