| Earth, Ocean and Atmospheric Sciences | Lifetime | 85 | US 34 | 99.89 |
| Engineering, Technology and Energy | Lifetime | 648 | US 176 | 99.89 |
| Environmental Science and Ecology | Lifetime | 272 | US 103 | 99.93 |
| Filtration and Separation | Lifetime | 1 | US 1 | 99.91 |
| Oceanography and Marine Geoscience | Lifetime | 10 | US 5 | 99.90 |
| Water Science and Technology | Lifetime | 107 | US 18 | 99.68 |
| Fluid Flow and Transfer Processes | Lifetime | 51 | US 21 | 99.12 |
| Industrial Environmental Engineering | Lifetime | 152 | US 30 | 98.88 |
| Environmental Chemistry | Lifetime | 148 | US 58 | 98.85 |
| Geochemistry and Petrology | Lifetime | 90 | US 37 | 98.77 |
| Electrochemistry | Lifetime | 73 | US 21 | 98.29 |
| Biomaterials | Lifetime | 543 | US 112 | 95.87 |
| Pollution | Lifetime | 812 | US 131 | 92.95 |
| Physical and Theoretical Chemistry | Lifetime | 989 | US 420 | 90.22 |
| Bioengineering | Lifetime | 360 | US 72 | 88.94 |
| Chemical and Physical Properties in Aqueous Solutions | Lifetime | 1 | US 1 | 99.94 |
| Ocean Acidification Effects and Responses | Lifetime | 2 | US 2 | 99.93 |
| Electrochemical Analysis and Applications | Lifetime | 45 | US 18 | 99.77 |
| Mine drainage and remediation techniques | Lifetime | 6 | US 6 | 99.71 |
| Thermodynamic properties of mixtures | Lifetime | 6 | US 4 | 99.81 |
| Marine Biogeochemistry and Ocean Ecosystems | Lifetime | 27 | US 14 | 99.81 |
| Calcium Carbonate Crystallization and Inhibition | Lifetime | 12 | US 5 | 99.57 |
| Water Quality Monitoring and Analysis | Lifetime | 36 | US 8 | 99.59 |
| Water Quality and Pollution Assessment | Lifetime | 27 | US 4 | 99.47 |
| Groundwater and Isotope Geochemistry | Lifetime | 31 | US 16 | 99.45 |
| Spectroscopy and Quantum Chemical Studies | Lifetime | 170 | US 98 | 99.41 |
| Iron oxide chemistry and applications | Lifetime | 66 | US 26 | 98.88 |
| Chemical Thermodynamics and Molecular Structure | Lifetime | 110 | US 53 | 98.67 |
| Phase Equilibria and Thermodynamics | Lifetime | 150 | US 63 | 98.65 |
| Advanced oxidation water treatment | Lifetime | 137 | US 17 | 98.87 |
| Industrial Gas Emission Control | Lifetime | 76 | US 11 | 98.23 |
| Analytical Chemistry and Sensors | Lifetime | 707 | US 133 | 98.18 |
| Renal function and acid-base balance | Lifetime | 188 | US 103 | 97.66 |
| Marine Bivalve and Aquaculture Studies | Lifetime | 422 | US 109 | 97.70 |
| Water Quality Monitoring Technologies | Lifetime | 271 | US 56 | 96.31 |
| Oceanographic and Atmospheric Processes | Lifetime | 551 | US 261 | 97.60 |
| Scientific Research and Discoveries | Lifetime | 299 | US 135 | 95.62 |
| Various Chemistry Research Topics | Lifetime | 888 | US 506 | 92.63 |
| Chemical Looping and Thermochemical Processes | Lifetime | 550 | US 64 | 91.23 |
