Table 7.
Non-target analysis of new emerging contaminants in the Msunduzi and Mgeni River at Schymansaki assessment level 3.
| Non-Target Analytes | Source or Origin | Chemical Formula | Fragment Pattern m/z | River Water | Wastewater | Sediments | Biosolids | Similarity Index |
|---|---|---|---|---|---|---|---|---|
| Butyldiglycol | Paints | C8H18O3 | 57, 100, 132 | Detected | Detected | - | - | 79 |
| 2-propanol, 1-[1-methyl-2-(properyloxy)ether | - | C9H18O3 | 59, 103, 174 | detected | - | - | - | 80 |
| Nicotinic acid | Vitamin | C6H5NO2 | 51, 91, 136, 195 | - | Detected | - | - | 72 |
| Phenylmalonic acid | - | C9H8O4 | 69, 91, 136 | - | - | 88 | ||
| 2-ethyl-3-hydroxyhexyl 2-methyl propanoate | - | C12H24O3 | 71, 95, 99, 143, 174 | Detected | Detected | - | - | 79 |
| Oxindole | Human metabolite | C8H7NO | 78, 104, 133 | Detected | Detected | - | - | 81 |
| 2,6-Dimethylphenyl isocyanide | Cyanobacteria | C9H9NO | 51, 118, 147 | Detected | Detected | - | - | 60 |
| Obtusifoliol | Hormone | C30H50O | 75, 215, 355, 370, 429 | - | Detected | - | - | 75 |
| Cholesterol | Hormone | C27H46O | 129, 329, 353, 368, 458 | - | Detected | - | - | 88 |
| Metolachlor | Herbicide, pesticide | C15H22ClNO2 | 91, 162, 238 | Detected | - | - | 95 | |
| Bisphenol A | Plasticizer | C15H16O2 | 119, 213, 228, 372 | - | - | - | - | 96 |
| Triethyl phosphate | Plasticizer | C6H15O4P | 81, 99, 109, 155, 182 | Detected | Detected | Detected | Detected | 81 |
| Triethyl citrate | Plasticizer | C12H20O7 | 115, 157, 203, 348 | Detected | Detected | Detected | Detected | 82 |
| Oxybenzone | UV filters | C14H12O3 | 51, 77, 151, 227, 300 | Detected | - | Detected | 80 | |
| Tris(2-chloroethyl) phosphate | Flame retardant | C6H12Cl3O4P | 63, 143, 205, 249, 253 | Detected | - | - | - | 79 |
| Triphenyl phosphate | Flame retardant | C18H15O4P | 77,169, 233, 233, 326 | - | - | - | Detected | 90 |