| Coal and Its By-products | Lifetime | 2 | CN 1 | 99.77 |
| Heavy metals in environment | Lifetime | 50 | CN 17 | 99.75 |
| Coal Properties and Utilization | Lifetime | 15 | CN 7 | 99.59 |
| Mercury impact and mitigation studies | Lifetime | 81 | CN 13 | 99.04 |
| Recycling and utilization of industrial and municipal waste in materials production | Lifetime | 63 | CN 14 | 99.05 |
| Water Quality and Pollution Assessment | Lifetime | 166 | CN 27 | 98.35 |
| Thermochemical Biomass Conversion Processes | Lifetime | 274 | CN 87 | 98.40 |
| Heavy Metal Exposure and Toxicity | Lifetime | 304 | CN 29 | 98.00 |
| Radioactivity and Radon Measurements | Lifetime | 285 | CN 8 | 97.02 |
| Environmental Quality and Pollution | Lifetime | 73 | CN 70 | 96.16 |
| Adsorption and biosorption for pollutant removal | Lifetime | 491 | CN 155 | 97.71 |
| Toxic Organic Pollutants Impact | Lifetime | 537 | CN 110 | 97.85 |
| Geochemistry and Elemental Analysis | Lifetime | 393 | CN 67 | 97.59 |
| Arsenic contamination and mitigation | Lifetime | 398 | CN 110 | 95.81 |
| Geoscience and Mining Technology | Lifetime | 399 | CN 364 | 93.10 |
| Environmental remediation with nanomaterials | Lifetime | 841 | CN 423 | 92.24 |
| Fluoride Effects and Removal | Lifetime | 648 | CN 100 | 88.35 |
| Mining and Resource Management | Lifetime | 760 | CN 27 | 80.45 |
| Coal and Its By-products | 2021-2025 | 4 | CN 4 | 98.83 |
| Heavy metals in environment | 2021-2025 | 45 | CN 18 | 99.10 |
| Adsorption and biosorption for pollutant removal | 2021-2025 | 196 | CN 42 | 96.98 |
| Extraction and Separation Processes | 2021-2025 | 354 | CN 249 | 94.89 |
| Water Quality and Pollution Assessment | 2021-2025 | 206 | CN 49 | 91.78 |
| Recycling and utilization of industrial and municipal waste in materials production | 2021-2025 | 260 | CN 150 | 92.77 |
| Mercury impact and mitigation studies | 2021-2025 | 293 | CN 163 | 90.22 |
| Recycling and Waste Management Techniques | 2021-2025 | 792 | CN 296 | 90.96 |
| Pharmaceutical and Antibiotic Environmental Impacts | 2021-2025 | 964 | CN 527 | 88.76 |
| Groundwater and Isotope Geochemistry | 2021-2025 | 501 | CN 191 | 87.96 |
| Geochemistry and Elemental Analysis | 2021-2025 | 670 | CN 401 | 86.41 |
| Fluoride Effects and Removal | 2021-2025 | 144 | CN 65 | 83.26 |
| Radioactivity and Radon Measurements | 2021-2025 | 518 | CN 67 | 83.75 |
| Arsenic contamination and mitigation | 2021-2025 | 501 | CN 312 | 83.31 |
| Phosphorus and nutrient management | 2021-2025 | 655 | CN 322 | 79.65 |
| Clay minerals and soil interactions | 2021-2025 | 559 | CN 213 | 76.42 |
| Heavy Metals in Plants | 2021-2025 | 534 | CN 97 | 64.13 |
| Thallium and Germanium Studies | 2021-2025 | 162 | CN 100 | 40.18 |
