|
| Humic-like | Fulvic-like | Tryptophan-like | Tyrosine-like |
| Raw sewage sample |
|
|
|
|
| May | 13% | 13% | 6% | 10% |
| June | −30% | −13% | −18% | −2% |
| July | −9% | 3% | −22% | 6% |
| Spiked sample |
|
|
|
|
| May | 5% | 372% | −1% | −35% |
| June | 13% | 63% | −46% | −20% |
| July | 14% | 137% | −28% | −41% |