Technical Annual Status Report (Stage 2) for the CLRTAP Inventory Review: Synthesis and Assessment Country report
KEY CATEGORY ANALYSIS
Party: IT 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 | 1A3bi (19.1%) | 1A3dii (16.5%) | 1A3biii (13.1%) | 1A3bii (7.3%) | 1A4bi (5.7%) | 1A4ai (5.1%) | 1A2f (5.0%) | 3Da1 (3.6%) | 1A4cii (3.5%) | 1A1a (3.0%) | 81.8% | ||
| NMVOC | 2024 | 2D3a (20.5%) | 2D3d (14.6%) | 1A4bi (12.6%) | 1A3bv (6.0%) | 2D3g (5.3%) | 3B1a (4.5%) | 2H2 (3.5%) | 2D3i (3.4%) | 1A4ai (3.2%) | 3B1b (3.2%) | 1A3biv (2.9%) | 2D3h (2.0%) | 81.8% |
| SOx | 2024 | 1A2f (26.5%) | 1B2aiv (18.0%) | 1A3dii (12.5%) | 2B10a (7.6%) | 1A1b (6.1%) | 1A4ai (5.9%) | 1A4bi (5.4%) | 82.0% | |||||
| NH3 | 2024 | 3Da1 (22.0%) | 3B1a (14.3%) | 3Da2a (13.1%) | 3B1b (12.8%) | 3B3 (9.0%) | 6A (3.4%) | 3B4gii (3.1%) | 3Da3 (2.9%) | 80.6% | ||||
| PM2.5 | 2024 | 1A4bi (55.8%) | 1A3dii (5.4%) | 1A3bvi (4.5%) | 5C2 (3.9%) | 5E (3.4%) | 1A2f (3.3%) | 2C1 (2.4%) | 2D3i (2.4%) | 81.2% | ||||
| PM10 | 2024 | 1A4bi (38.6%) | 2A5b (12.0%) | 1A3bvi (5.9%) | 3Dc (5.6%) | 1A3dii (3.7%) | 5C2 (2.8%) | 2A5a (2.8%) | 1A3bvii (2.7%) | 1A2f (2.6%) | 2D3i (2.5%) | 5E (2.3%) | 81.4% | |
| TSP | 2024 | 1A4bi (29.7%) | 2A5b (26.1%) | 1A3bvi (5.0%) | 2A5a (3.7%) | 3Dc (3.7%) | 1A3bvii (3.6%) | 1A3dii (2.5%) | 1A2f (2.4%) | 2I (2.2%) | 5C2 (2.0%) | 80.9% | ||
| BC | 2024 | 1A4bi (40.8%) | 1A3dii (10.6%) | 1A3bvi (8.7%) | 1A3bi (7.6%) | 5C2 (6.8%) | 5E (5.2%) | 1A3biii (5.1%) | 84.7% | |||||
| CO | 2024 | 1A4bi (58.6%) | 1A3bi (9.9%) | 1A3biv (5.2%) | 5C2 (5.1%) | 1A2a (2.8%) | 81.6% | |||||||
| Pb | 2024 | 2C1 (39.5%) | 1A3bvi (24.5%) | 1A2f (13.1%) | 2G (5.9%) | 82.9% | ||||||||
| Cd | 2024 | 2C1 (22.9%) | 1A2f (13.9%) | 1A2a (10.0%) | 5C2 (9.8%) | 2G (8.6%) | 1A4bi (7.0%) | 1A3bi (6.6%) | 1A3bvi (4.4%) | 83.2% | ||||
| Hg | 2024 | 2C1 (50.5%) | 1A2f (10.9%) | 1B2d (7.9%) | 1A2a (7.1%) | 1A1a (4.6%) | 81.0% | |||||||
| As | 2024 | 1A2b (35.4%) | 1A2f (21.6%) | 1A3bvi (10.4%) | 1A1a (10.1%) | 1A2a (6.7%) | 84.1% | |||||||
| Cr | 2024 | 1A3bvi (36.7%) | 2C1 (20.7%) | 1A2f (10.3%) | 1A1a (9.4%) | 1A2a (6.6%) | 83.6% | |||||||
| Cu | 2024 | 1A3bvi (80.3%) | 80.3% | |||||||||||
| Ni | 2024 | 1A2f (18.4%) | 1A3dii (16.3%) | 2C1 (12.8%) | 1A1b (10.2%) | 1A1a (8.1%) | 1A3bvi (8.0%) | 1A3bi (6.5%) | 80.4% | |||||
| Se | 2024 | 1A2f (32.3%) | 2C1 (16.6%) | 1A1a (16.1%) | 1A3dii (6.1%) | 1A3bvi (5.0%) | 1A3bi (4.8%) | 80.9% | ||||||
| Zn | 2024 | 2C1 (74.0%) | 1A3bvi (14.0%) | 88.0% | ||||||||||
| DIOX | 2024 | 2C1 (29.5%) | 1A4bi (26.9%) | 1A2b (18.3%) | 5E (15.8%) | 90.5% | ||||||||
| PAH | 2024 | 1A4bi (76.2%) | 2C1 (11.8%) | 88.0% | ||||||||||
| HCB | 2024 | 1A2b (54.3%) | 1A4bi (11.2%) | 1A4ai (9.5%) | 5C1biii (8.1%) | 83.1% | ||||||||
| PCB | 2024 | 2C1 (74.4%) | 1A4bi (12.0%) | 86.4% | ||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A3biii (23.1%) | 1A3bi (18.2%) | 1A3dii (10.4%) | 1A2f (7.6%) | 1A1a (5.7%) | 1A4cii (5.3%) | 1A4bi (4.9%) | 1A3bii (4.1%) | 1A4ai (3.7%) | 83.0% | ||||
| NMVOC | 2010 | 1A4bi (16.7%) | 2D3a (14.9%) | 2D3d (13.6%) | 1A3biv (6.4%) | 2D3g (4.7%) | 1A3bi (4.2%) | 1A3bv (3.9%) | 3B1a (3.2%) | 3B1b (3.0%) | 1A3dii (2.8%) | 2D3i (2.8%) | 1B2b (2.5%) | 2H2 (2.2%) | 80.9% |
| SOx | 2010 | 1A2f (18.5%) | 1A1b (18.4%) | 1A1a (14.8%) | 1A3dii (14.0%) | 1B2aiv (11.2%) | 1A4bi (3.7%) | 80.6% | |||||||
| NH3 | 2010 | 3Da1 (17.5%) | 3B1b (15.9%) | 3Da2a (15.5%) | 3B1a (14.0%) | 3B3 (9.4%) | 3B4gii (2.9%) | 6A (2.6%) | 3B4a (2.4%) | 80.1% | |||||
| PM2.5 | 2010 | 1A4bi (57.7%) | 1A3dii (4.2%) | 1A3bi (4.1%) | 1A3bvi (2.7%) | 1A3biii (2.6%) | 5C2 (2.5%) | 1A4cii (2.5%) | 2A5b (2.5%) | 2C1 (2.2%) | 81.0% | ||||
| PM10 | 2010 | 1A4bi (40.2%) | 2A5b (17.1%) | 1A3bvi (3.6%) | 3Dc (3.4%) | 1A3dii (2.9%) | 1A3bi (2.8%) | 2A5a (2.7%) | 2A1 (1.9%) | 2C1 (1.9%) | 5C2 (1.8%) | 1A3biii (1.8%) | 80.1% | ||
| TSP | 2010 | 2A5b (35.7%) | 1A4bi (29.5%) | 2A5a (3.4%) | 1A3bvi (2.9%) | 3Dc (2.1%) | 1A3bvii (2.0%) | 1A3dii (1.8%) | 1A3bi (1.8%) | 1A2f (1.6%) | 80.8% | ||||
| BC | 2010 | 1A4bi (32.1%) | 1A3bi (18.4%) | 1A3biii (10.4%) | 1A4cii (9.3%) | 1A3bii (6.8%) | 1A3dii (4.5%) | 81.4% | |||||||
| CO | 2010 | 1A4bi (52.8%) | 1A3bi (15.2%) | 1A3biv (6.4%) | 1A2a (5.9%) | 80.3% | |||||||||
| Pb | 2010 | 2C1 (32.2%) | 1A3bvi (20.6%) | 1A2a (18.3%) | 1A2f (8.8%) | 1A4bi (5.5%) | 85.4% | ||||||||
| Cd | 2010 | 2C1 (20.0%) | 1A2a (14.6%) | 1A2f (11.2%) | 1A4bi (10.7%) | 2G (9.0%) | 5C2 (8.0%) | 1A3bi (4.8%) | 1B1b (3.8%) | 82.1% | |||||
| Hg | 2010 | 2C1 (30.5%) | 1B2d (14.7%) | 1A2f (12.1%) | 1A2a (10.0%) | 1A1a (7.9%) | 1A2b (5.4%) | 80.5% | |||||||
| As | 2010 | 1A2f (48.7%) | 1A1a (19.7%) | 1A2a (10.8%) | 1A2b (10.2%) | 89.4% | |||||||||
| Cr | 2010 | 1A3bvi (30.9%) | 2C1 (17.9%) | 1A1a (17.7%) | 1A2a (8.9%) | 1A2f (7.6%) | 83.0% | ||||||||
| Cu | 2010 | 1A3bvi (77.5%) | 1A3bi (9.8%) | 87.3% | |||||||||||
| Ni | 2010 | 1A1a (15.9%) | 1A2f (14.9%) | 1A1b (12.5%) | 1A3dii (11.6%) | 1A2c (10.6%) | 2C1 (8.8%) | 1A3bvi (5.7%) | 1A4bi (4.9%) | 84.8% | |||||
| Se | 2010 | 1A1a (35.1%) | 1A2f (19.2%) | 2C1 (10.9%) | 1A2a (6.8%) | 1A3dii (4.5%) | 1A3bvi (3.5%) | 1A3bi (3.2%) | 83.2% | ||||||
| Zn | 2010 | 2C1 (65.1%) | 1A3bvi (12.7%) | 1A2a (10.0%) | 87.8% | ||||||||||
| DIOX | 2010 | 1A4bi (38.5%) | 2C1 (22.2%) | 1A2b (12.7%) | 5E (8.2%) | 81.7% | |||||||||
| PAH | 2010 | 1A4bi (77.2%) | 2C1 (16.2%) | 93.4% | |||||||||||
| HCB | 2010 | 1A2b (34.9%) | 3Df (16.5%) | 1A4bi (12.2%) | 1A4ai (11.5%) | 1A2a (10.0%) | 85.0% | ||||||||
| PCB | 2010 | 2C1 (69.8%) | 1A4bi (13.6%) | 83.4% | |||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2005 | 1A3biii (25.1%) | 1A3bi (18.0%) | 1A2f (8.0%) | 1A3dii (7.5%) | 1A1a (6.5%) | 1A4cii (6.0%) | 1A3bii (5.5%) | 1A4bi (3.3%) | 3Da1 (2.4%) | 82.3% | |||||||
| NMVOC | 2005 | 2D3d (15.6%) | 2D3a (13.4%) | 1A3biv (11.1%) | 1A3bi (8.9%) | 1A4bi (7.8%) | 2D3g (4.3%) | 1A3bv (4.0%) | 1A3dii (3.2%) | 3B1b (3.0%) | 3B1a (2.8%) | 2D3i (2.5%) | 1B2b (2.2%) | 2H2 (2.0%) | 80.8% | |||
| SOx | 2005 | 1A1a (27.3%) | 1A1b (15.3%) | 1A2f (13.2%) | 1A3dii (12.1%) | 1B2aiv (7.8%) | 1A4bi (4.4%) | 80.1% | ||||||||||
| NH3 | 2005 | 3Da1 (22.9%) | 3B1b (15.4%) | 3Da2a (14.5%) | 3B1a (13.0%) | 3B3 (7.7%) | 1A3bi (3.2%) | 1B2d (2.8%) | 3B4gii (2.5%) | 81.8% | ||||||||
| PM2.5 | 2005 | 1A4bi (36.0%) | 1A4cii (5.8%) | 1A3biii (5.2%) | 1A3bi (5.0%) | 1A3dii (4.9%) | 1A3bii (4.4%) | 1A2f (3.6%) | 1A3bvi (3.3%) | 5C2 (2.9%) | 2C1 (2.9%) | 2A1 (2.3%) | 2A5b (2.3%) | 1A2c (1.9%) | 80.4% | |||
| PM10 | 2005 | 1A4bi (23.8%) | 2A5b (14.8%) | 1A3bvi (4.2%) | 3Dc (4.0%) | 1A4cii (3.8%) | 2A5a (3.5%) | 1A3biii (3.4%) | 1A3bi (3.3%) | 1A3dii (3.2%) | 1A2f (3.0%) | 1A3bii (2.9%) | 2A1 (2.7%) | 3B4gii (2.4%) | 2C1 (2.3%) | 5C2 (2.0%) | 1A3bvii (1.9%) | 81.2% |
| TSP | 2005 | 2A5b (31.4%) | 1A4bi (17.9%) | 2A5a (4.5%) | 1A3bvi (3.4%) | 1A2f (2.7%) | 3Dc (2.6%) | 1A4cii (2.5%) | 1A3bvii (2.4%) | 3B4gii (2.4%) | 1A3biii (2.2%) | 1A3dii (2.1%) | 1A3bi (2.1%) | 2A1 (1.9%) | 2C1 (1.9%) | 1A3bii (1.8%) | 81.8% | |
| BC | 2005 | 1A4cii (16.1%) | 1A3bi (15.6%) | 1A4bi (14.9%) | 1A3biii (14.6%) | 1A3bii (12.7%) | 1A2gvii (4.2%) | 1A3dii (3.8%) | 81.9% | |||||||||
| CO | 2005 | 1A3bi (30.9%) | 1A4bi (25.9%) | 1A3biv (12.3%) | 1A2a (7.3%) | 1A3dii (3.5%) | 1A3bii (2.7%) | 82.5% | ||||||||||
| Pb | 2005 | 2C1 (26.3%) | 1A3bvi (16.9%) | 1A2a (16.2%) | 1A4ai (14.6%) | 1A2b (7.5%) | 81.4% | |||||||||||
| Cd | 2005 | 1A4ai (22.6%) | 1A2a (13.7%) | 2C1 (13.5%) | 1A2f (8.2%) | 1A4bi (7.3%) | 2G (6.0%) | 1A2b (6.0%) | 5C2 (5.1%) | 82.3% | ||||||||
| Hg | 2005 | 2C1 (21.4%) | 1B2d (17.1%) | 1A4ai (13.5%) | 1A2f (11.3%) | 1A2a (8.2%) | 1A1a (6.9%) | 1A2b (5.4%) | 84.0% | |||||||||
| As | 2005 | 1A2f (61.2%) | 1A1a (13.6%) | 1A2a (8.4%) | 83.2% | |||||||||||||
| Cr | 2005 | 1A3bvi (27.6%) | 1A1a (17.0%) | 2C1 (16.4%) | 1A2a (9.2%) | 1A2f (6.9%) | 1A4ai (6.1%) | 83.1% | ||||||||||
| Cu | 2005 | 1A3bvi (75.4%) | 1A3bi (8.8%) | 84.2% | ||||||||||||||
| Ni | 2005 | 1A4ai (46.3%) | 1A1a (11.6%) | 1A4bi (7.3%) | 1A2f (6.8%) | 1A1b (5.2%) | 1A3dii (4.2%) | 81.4% | ||||||||||
| Se | 2005 | 1A1a (35.8%) | 1A2f (18.5%) | 2C1 (10.3%) | 1A2a (7.8%) | 1A3dii (4.0%) | 1A3bvi (3.4%) | 1A2gviii (3.1%) | 83.0% | |||||||||
| Zn | 2005 | 2C1 (61.3%) | 1A3bvi (12.3%) | 1A2a (11.8%) | 85.4% | |||||||||||||
| DIOX | 2005 | 2C1 (21.8%) | 1A4bi (21.6%) | 1A2a (17.3%) | 1A2b (13.3%) | 5E (8.9%) | 82.9% | |||||||||||
| PAH | 2005 | 1A4bi (59.0%) | 2C1 (27.3%) | 86.3% | ||||||||||||||
| HCB | 2005 | 1A4ai (38.8%) | 5C1biv (21.8%) | 1A2b (15.6%) | 1A2a (9.4%) | 85.6% | ||||||||||||
| PCB | 2005 | 2C1 (59.1%) | 1A2a (17.0%) | 1A4ai (14.1%) | 90.1% | |||||||||||||