Table 2.
La solubility in various growth media previously used in biosorption studies. Solutions were spiked with 100 µM LaCl3 and equilibrated for 96 h at room temperature before measuring for dissolved La
| Matrix | cPO4,0 (mM) | pH0 | cLa,end (µM) | Reference |
|---|---|---|---|---|
| H2O control | 0 | 5.5 | 97.3 ± 1.2 | − |
| Bold’s basal medium | 1.7 | 6.8 | < L.O.D.a | Fischer et al. (2019), Fritz et al. (2022a,b) |
| Hutner medium, − seed | 2.9 | 3.3 | 96.1 ± 0.4* | Kim et al. (2022) |
| Hutner medium, + seed | 2.9 | 3.3 | 49.7 ± 9.3** | |
| KH2PO4 control | 2.9 | 3.3 | < L.O.D.a | |
| Yeast extract, − seed | > 0.24b | 3.3 | 86.0 ± 8.3* | |
| Yeast extract, + seed | > 0.24b | 3.3 | 64.7 ± 7.0** | |
| KH2PO4 control | 0.24 | 3.3 | < L.O.D.a |
aDetection limit
bActual cPO4 was not determined but equals the sum of phosphate from yeast extract and KH2PO4
*No significant difference compared to control (Welch’s one-sided t-test, α = 0.05)
**Significant difference compared to control (Welch’s one-sided t-test, α = 0.05)