Table 6. The concentration of ions and pH values in blood plasma and in different solutions.
| Ion | Blood plasma | Ringer’s solution | Earle’s balanced salt solution | Hank’s balanced salt solution | Kokubo’s simulated body fluid |
|---|---|---|---|---|---|
| Na+ (mM) | 142.00 | 130.00 | 143.60 | 138.00 | 142.00 |
| K+ (mM) | 5.00 | 4.00 | 5.37 | 6.14 | 5.00 |
| Ca2+ (mM) | 2.50 | 1.40 | 1.80 | 1.26 | 2.50 |
| Mg2+ (mM) | 1.50 | NA | 0.81 | 0.81 | 1.50 |
| Cl− (mM) | 103.00 | 109.00 | 125.30 | 144.8 | 147.80 |
| HCO3 (mM)- | 27.00 | NA | 26.2 | 4.2 | 4.20 |
| HPO42- (mM) | 1.00 | NA | 1.00 | 0.78 | 1.00 |
| SO42- (mM) | 0.50 | NA | 0.81 | 0.81 | 0.50 |
| Ca/P (mM) | 2.50 | NA | 1.80 | 1.62 | 2.50 |
| Buffer (mM) | NA | NA | NA | NA | Tris |
| pH | 7.4 | 6.5 | 6.7-6.9 | 6.7-6.9 | 7.4 |
Note: NA: not applicable. Data are from Gu et al.147