Technical Annual Status Report (Stage 2) for the CLRTAP Inventory Review: Synthesis and Assessment Country report
KEY CATEGORY ANALYSIS
Party: RO Submission year: 2026
Key categories analysis is becoming important in prioritising emission sources and identifying where inventory improvements can be most efficiently implemented. We have assessed the most important sources (the sources making up 80% of the national total) for your country, based on your latest submission. The key sources for the 2024, 2010 and 2005 emissions, including the corresponding percentages, are listed below. |
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2024 | 1A3biii (21.8%) | 1A3bi (17.5%) | 3Da1 (8.6%) | 1A4bi (6.9%) | 1A3bii (6.4%) | 1A1a (5.5%) | 3Da3 (5.3%) | 1A2f (5.2%) | 3Da2a (3.1%) | 80.3% | ||
| NMVOC | 2024 | 1A4bi (27.4%) | 2D3a (10.9%) | 2D3g (7.0%) | 3Da2a (6.8%) | 3B1a (6.3%) | 2D3d (6.0%) | 1A3bi (4.2%) | 2H2 (3.3%) | 1A3bv (3.2%) | 2D3i (2.7%) | 3B1b (2.2%) | 80.1% |
| SOx | 2024 | 1A1a (31.0%) | 1A2a (18.4%) | 1A2f (14.7%) | 1A4bi (13.4%) | 1A1c (6.5%) | 84.0% | ||||||
| NH3 | 2024 | 3Da2a (26.0%) | 3Da1 (24.1%) | 3Da3 (11.9%) | 3B3 (9.1%) | 3B1a (8.3%) | 3B4gii (4.3%) | 83.7% | |||||
| PM2.5 | 2024 | 1A4bi (82.8%) | 82.8% | ||||||||||
| PM10 | 2024 | 1A4bi (60.9%) | 3Dc (14.5%) | 2A5b (2.9%) | 2A5a (2.7%) | 80.9% | |||||||
| TSP | 2024 | 1A4bi (43.8%) | 3Dc (9.9%) | 2D3b (8.4%) | 2A5b (6.6%) | 2A5a (6.0%) | 3B4gi (4.6%) | 2B10a (3.0%) | 82.3% | ||||
| BC | 2024 | 1A4bi (71.9%) | 1A3bi (6.7%) | 1A3biii (5.4%) | 84.0% | ||||||||
| CO | 2024 | 1A4bi (55.2%) | 1B2aiv (17.2%) | 1A3bi (10.1%) | 82.5% | ||||||||
| Pb | 2024 | 1A3bvi (35.8%) | 2C1 (22.7%) | 1A4bi (12.7%) | 2G (6.3%) | 1A1a (5.1%) | 82.5% | ||||||
| Cd | 2024 | 1A4bi (57.5%) | 2C1 (9.1%) | 1B2aiv (8.8%) | 1A1a (6.3%) | 81.5% | |||||||
| Hg | 2024 | 5C1biii (39.0%) | 1A2f (19.0%) | 1A1a (12.6%) | 1B2aiv (12.6%) | 83.2% | |||||||
| As | 2024 | 1A1a (60.6%) | 1A2f (9.8%) | 2C1 (9.7%) | 80.1% | ||||||||
| Cr | 2024 | 1A3bvi (38.3%) | 1A4bi (28.3%) | 2C1 (12.0%) | 1A1a (8.6%) | 87.2% | |||||||
| Cu | 2024 | 1A3bvi (93.4%) | 93.4% | ||||||||||
| Ni | 2024 | 1A1c (23.2%) | 1B2aiv (22.7%) | 1A1a (18.6%) | 2C1 (8.4%) | 1A3bvi (5.7%) | 1A4ci (4.4%) | 82.9% | |||||
| Se | 2024 | 1A1a (77.8%) | 1A4bi (7.3%) | 85.1% | |||||||||
| Zn | 2024 | 1A4bi (55.4%) | 1A3bvi (23.3%) | 2C1 (5.1%) | 83.8% | ||||||||
| DIOX | 2024 | 1A4bi (48.9%) | 5C1biii (35.4%) | 84.3% | |||||||||
| PAH | 2024 | 1A4bi (87.3%) | 87.3% | ||||||||||
| HCB | 2024 | 5C1biii (53.2%) | 1A1a (21.3%) | 1A4bi (21.1%) | 95.6% | ||||||||
| PCB | 2024 | 2C1 (62.3%) | 1A2f (12.5%) | 1A2a (11.9%) | 86.7% | ||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A1a (22.0%) | 1A3biii (20.0%) | 1A3bi (10.1%) | 1A4bi (5.0%) | 3Da1 (4.8%) | 3Da3 (3.8%) | 1A3bii (3.3%) | 1A3c (3.2%) | 3Da2a (3.1%) | 1A2f (2.9%) | 1A2a (2.9%) | 81.1% | ||
| NMVOC | 2010 | 1A4bi (29.2%) | 2D3a (8.1%) | 2D3d (6.9%) | 3Da2a (5.5%) | 1A3bi (5.1%) | 3B1a (5.1%) | 1B1a (4.9%) | 2B10a (3.5%) | 2D3g (3.2%) | 2H2 (2.8%) | 2D3e (2.6%) | 1A3bv (2.2%) | 2D3i (2.1%) | 81.1% |
| SOx | 2010 | 1A1a (85.1%) | 85.1% | ||||||||||||
| NH3 | 2010 | 3Da2a (28.7%) | 3B3 (14.3%) | 3Da1 (13.5%) | 3Da3 (10.9%) | 3B1a (7.9%) | 5D3 (7.1%) | 82.5% | |||||||
| PM2.5 | 2010 | 1A4bi (81.6%) | 81.6% | ||||||||||||
| PM10 | 2010 | 1A4bi (65.7%) | 3Dc (7.0%) | 1A1a (5.9%) | 2A2 (2.5%) | 81.1% | |||||||||
| TSP | 2010 | 1A4bi (39.4%) | 2B10a (20.7%) | 2D3b (8.5%) | 1A1a (4.9%) | 3Dc (4.0%) | 2A2 (3.6%) | 81.1% | |||||||
| BC | 2010 | 1A4bi (72.6%) | 1A3biii (6.2%) | 1A3bi (3.8%) | 82.6% | ||||||||||
| CO | 2010 | 1A4bi (55.7%) | 1B2aiv (13.1%) | 1A3bi (12.5%) | 81.2% | ||||||||||
| Pb | 2010 | 2C1 (46.0%) | 1A3bvi (15.0%) | 1A2a (9.8%) | 1A4bi (9.6%) | 80.3% | |||||||||
| Cd | 2010 | 1A4bi (53.1%) | 2C1 (13.5%) | 1A1a (12.9%) | 1B2aiv (6.1%) | 85.6% | |||||||||
| Hg | 2010 | 1A1a (28.2%) | 2B10a (13.9%) | 5C1biii (11.3%) | 1A2f (10.0%) | 1A2a (9.9%) | 1B2aiv (9.4%) | 82.7% | |||||||
| As | 2010 | 1A1a (70.8%) | 2C1 (16.7%) | 87.6% | |||||||||||
| Cr | 2010 | 2C1 (33.6%) | 1A4bi (23.9%) | 1A3bvi (16.6%) | 1A1a (16.2%) | 90.3% | |||||||||
| Cu | 2010 | 1A3bvi (91.5%) | 91.5% | ||||||||||||
| Ni | 2010 | 1A1a (37.2%) | 1B2aiv (14.9%) | 1A1b (12.9%) | 2C1 (11.5%) | 1A1c (7.7%) | 84.2% | ||||||||
| Se | 2010 | 1A1a (93.8%) | 93.8% | ||||||||||||
| Zn | 2010 | 1A4bi (57.6%) | 1A3bvi (11.8%) | 2C1 (11.0%) | 80.4% | ||||||||||
| DIOX | 2010 | 1A4bi (63.5%) | 2C1 (12.5%) | 5C1biii (12.1%) | 88.1% | ||||||||||
| PAH | 2010 | 1A4bi (78.1%) | 2C1 (8.9%) | 87.0% | |||||||||||
| HCB | 2010 | 1A1a (53.2%) | 1A4bi (23.4%) | 5C1biii (17.3%) | 94.0% | ||||||||||
| PCB | 2010 | 2C1 (65.7%) | 1A2a (25.0%) | 90.7% | |||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2005 | 1A1a (28.8%) | 1A3biii (15.2%) | 1A3bi (10.1%) | 1A2a (5.3%) | 1A2gvii (3.7%) | 1A4bi (3.6%) | 3Da1 (3.5%) | 3Da2a (3.0%) | 3Da3 (2.9%) | 1A2f (2.9%) | 1A1c (2.7%) | 81.7% | ||||
| NMVOC | 2005 | 1A4bi (19.2%) | 1A3bi (9.2%) | 2D3a (7.1%) | 3Da2a (6.5%) | 1B1a (6.2%) | 3B1a (5.8%) | 2D3d (4.6%) | 2B10a (4.1%) | 1A4aii (3.6%) | 2H2 (3.0%) | 2D3g (2.8%) | 1A3bv (2.4%) | 1A2gvii (2.3%) | 3B1b (2.0%) | 1A2a (1.9%) | 80.7% |
| SOx | 2005 | 1A1a (86.0%) | 86.0% | ||||||||||||||
| NH3 | 2005 | 3Da2a (29.7%) | 3B3 (15.2%) | 3Da1 (12.2%) | 3Da3 (10.6%) | 3B1a (8.8%) | 5D3 (6.6%) | 83.2% | |||||||||
| PM2.5 | 2005 | 1A4bi (68.0%) | 1A1a (9.6%) | 1A2a (5.5%) | 83.1% | ||||||||||||
| PM10 | 2005 | 1A4bi (53.3%) | 1A1a (13.5%) | 3Dc (6.6%) | 1A2a (4.5%) | 2A2 (2.8%) | 80.7% | ||||||||||
| TSP | 2005 | 1A4bi (29.6%) | 2B10a (28.2%) | 1A1a (10.3%) | 2A2 (3.8%) | 3Dc (3.5%) | 2D3b (3.4%) | 3B4gi (3.1%) | 82.1% | ||||||||
| BC | 2005 | 1A4bi (59.5%) | 1A3biii (7.7%) | 1A2gvii (3.7%) | 1A2a (3.6%) | 1A3bi (3.3%) | 1A1a (2.8%) | 80.6% | |||||||||
| CO | 2005 | 1A4bi (37.2%) | 1A3bi (23.1%) | 1B2aiv (10.8%) | 1A4aii (5.7%) | 1A2a (4.7%) | 81.5% | ||||||||||
| Pb | 2005 | 2C1 (62.2%) | 1A2a (10.8%) | 1A3bvi (7.2%) | 80.1% | ||||||||||||
| Cd | 2005 | 1A4bi (39.7%) | 2C1 (18.2%) | 1A1a (13.5%) | 2G (6.4%) | 1B2aiv (5.7%) | 83.4% | ||||||||||
| Hg | 2005 | 2B10a (22.8%) | 1A1a (18.0%) | 5C1biii (17.3%) | 1A2a (11.7%) | 2C1 (9.9%) | 1A2f (7.2%) | 86.9% | |||||||||
| As | 2005 | 1A1a (57.6%) | 2C1 (29.3%) | 87.0% | |||||||||||||
| Cr | 2005 | 2C1 (52.9%) | 1A4bi (13.1%) | 1A1a (12.0%) | 1A3bvi (9.8%) | 87.8% | |||||||||||
| Cu | 2005 | 1A3bvi (85.8%) | 85.8% | ||||||||||||||
| Ni | 2005 | 1A1a (47.4%) | 1A1c (10.9%) | 2C1 (9.8%) | 1B2aiv (8.4%) | 1A1b (7.0%) | 83.7% | ||||||||||
| Se | 2005 | 1A1a (92.2%) | 92.2% | ||||||||||||||
| Zn | 2005 | 1A4bi (43.5%) | 2C1 (18.6%) | 1A3bvi (9.5%) | 1A2a (9.0%) | 80.6% | |||||||||||
| DIOX | 2005 | 5C1biii (74.8%) | 1A4bi (12.3%) | 87.1% | |||||||||||||
| PAH | 2005 | 1A4bi (58.6%) | 2C1 (19.6%) | 1A2a (13.2%) | 91.4% | ||||||||||||
| HCB | 2005 | 1A1a (40.7%) | 5C1biii (32.2%) | 1A4bi (13.6%) | 86.5% | ||||||||||||
| PCB | 2005 | 2C1 (67.8%) | 1A2a (25.7%) | 93.5% | |||||||||||||