Igwe nri na-ese n'elu mmiri maka ire ere
A na-eji nyocha nke Chemical Oxygen Demand (COD) mee ihe n'ọtụtụ ebe dị ka ihe nleba anya nke mmetọ organic site na ịchọpụta ọnụọgụ oxygen achọrọ maka oxidation nke ụdị dị mbelata gụnyere ihe ndị dị ndụ, n'ime ihe nlele mmiri na-eji ihe pụrụ iche oxidizing, okpomọkụ na mbelata oge. Nnwale COD bụ ezigbo ihe ngosipụta nke mmetọ organic na mmiri mkpofu ụlọ ọrụ nwere cyanide na ọla dị arọ. Nnwale COD na-enye nzaghachi ngwa ngwa maka ọnọdụ mgbanwe tupu nsogbu dị egwu amalite. Vial COD nke Lovibond dakọtara na BOTH Lovibond na Hach® colorimeters.
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