| NiS4Pc用量(mol/L) Usage of NiS4Pc | 标准工作曲线 Calibration curve | 线性区间 Linear Interval (mg/mL) | 相关系数 r |
| 1.0 × 10−5 | ΔA621 = 0.0087C − 0.0168 | 3.0~45.0 | 0.990 |
| 2.5 × 10−5 | ΔA621 = 0.014C − 0.0566 | 3.0~75.0 | 0.998 |
| 5.0 × 10−5 | ΔA621 = 0.0187C − 0.152 | 5.0~90.0 | 0.995 |