What is the purpose of the COD test? I- To measure the amount of oxidizable substances in a liquid sample. II- To determine the amount of oxygen r...
What is the purpose of the COD test?
I- To measure the amount of oxidizable substances in a liquid sample.
II- To determine the amount of oxygen required to oxidize organic matter in a wastewater sample.
III- To determine the concentration of nutrients in a water sample.
IV- To measure the degree of contamination in a natural water system.
a) I and III are correct.
b) II and IV are correct.
c) I and IV are correct.
d) II and III are correct.
I- To measure the amount of oxidizable substances in a liquid sample.
II- To determine the amount of oxygen required to oxidize organic matter in a wastewater sample.
III- To determine the concentration of nutrients in a water sample.
IV- To measure the degree of contamination in a natural water system.
a) I and III are correct.
b) II and IV are correct.
c) I and IV are correct.
d) II and III are correct.
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Ed 
O teste de DQO (Demanda Química de Oxigênio) tem como objetivo determinar a quantidade de substâncias oxidáveis em uma amostra líquida. Portanto, a alternativa correta é a letra a) I e III são corretas.
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