Table 2. Distribution of 1 under the dark condition and sterilized illuminated condition in water–sediment systems.
| % of the applied 14C [PY-14C] | ||||||||
|---|---|---|---|---|---|---|---|---|
| Dark condition | Illuminated and sterilized | |||||||
| Days | 0 | 7 | 14 | 21 | 28 | 0 | 14 | 28 |
| Volatile 14C | na | nd | <0.1 | <0.1 | <0.1 | na | 0.6 | 0.4 |
| 14CO2 | na | nd | nd | nd | nd | na | 0.2 | 0.3 |
| Others | na | <0.1 | <0.1 | <0.1 | <0.1 | na | 0.4 | 0.1 |
| Water 14C | 96.2 | 48.2 | 40.1 | 25.3 | 23.7 | 92.3 | 29.6 | 24.4 |
| Ethyl acetate layer | 96.1 | 48.2 | 40.1 | 25.3 | 23.7 | 92.1 | 29.0 | 23.6 |
| 1 | 95.2 | 48.2 | 40.1 | 25.3 | 23.7 | 91.4 | 29.0 | 23.6 |
| 2 | nd | nd | nd | nd | nd | nd | nd | nd |
| 3 | nd | nd | nd | nd | nd | nd | nd | nd |
| 4 | nd | nd | nd | nd | nd | nd | nd | nd |
| 5 | nd | nd | nd | nd | nd | nd | nd | nd |
| 6 | — | — | — | — | — | — | — | — |
| Others | 0.9 | nd | nd | nd | 0.1 | 0.7 | nd | nd |
| Aqueous layer | 0.1 | <0.1 | <0.1 | <0.1 | <0.1 | 0.3 | 0.6 | 0.8 |
| Sediment 14C | 2.5 | 48.7 | 62.0 | 75.8 | 73.3 | 10.9 | 68.9 | 74.2 |
| Ethyl acetate layer | 2.3 | 44.1 | 56.3 | 65.1 | 63.6 | 10.4 | 64.3 | 67.1 |
| 1 | 2.3 | 44.1 | 56.3 | 65.1 | 63.6 | 10.4 | 64.3 | 66.6 |
| 2 | nd | nd | nd | nd | nd | nd | nd | nd |
| 3 | nd | nd | nd | nd | nd | nd | nd | nd |
| 4 | nd | nd | nd | nd | nd | nd | nd | nd |
| 5 | nd | nd | nd | nd | nd | nd | nd | nd |
| 6 | — | — | — | — | — | — | — | — |
| Others | nd | nd | nd | nd | nd | nd | nd | 0.5 |
| Aqueous layer | 0.1 | 0.2 | 0.2 | <0.1 | 0.1 | 0.1 | 0.3 | 0.3 |
| Bound residue 14C | 0.2 | 4.4 | 5.6 | <0.1 | 1.9 | 0.4 | 4.3 | 6.8 |
| Acetonitrile layer (1) | na | na | na | 10.7 | 7.8 | na | na | na |
| Total 14C | 98.8 | 96.9 | 102.1 | 101.1 | 97.0 | 103.2 | 99.2 | 98.9 |
| Total 1 | 97.5 | 92.4 | 96.4 | 101.1 | 94.9 | 101.8 | 93.3 | 90.1 |
| Aqueous ORP (mV) | 131 | 135 | 142 | 202 | 214 | 148 | 160 | 172 |
| pH | 8.44 | 8.41 | 8.38 | 7.85 | 8.31 | 8.38 | 8.16 | 8.06 |
| DO (ppm) | 8.42 | 6.22 | 7.74 | 7.25 | 7.03 | 6.85 | 8.32 | 6.60 |
| Sediment ORP (mV) | −138 | −209 | −147 | −98 | −116 | −94 | −83 | −125 |
| pH | 7.17 | 7.44 | 7.24 | 7.23 | 7.19 | 6.97 | 6.92 | 7.06 |
[PY-14C]-1, 14C-labeled at the 4-position of the pyrazole ring; DO, dissolved oxygen content; ORP, oxidation-reduction potential; na, not analyzed; nd, not detected; —, not detected due to labeled position. Maximum unknown: Consist of multiple components, none of which exceed 0.9% AR.