沼渣 | 钠离子含量 | ≤0.05% | 0.05%~0.10% | 0.10%~0.15% | ≥0.15% |
样品数/个 | / | 9 | 17 | 4 | |
沼液 | 钠离子含量 | 0.005%~0.010% | 0.010%~0.015% | 0.015%~0.025% | ≥0.025% |
样品数/个 | 6 | 9 | 12 | 3 |