Technical Annual Status Report (Stage 2) for the CLRTAP Inventory Review: Synthesis and Assessment Country report
KEY CATEGORY ANALYSIS
Party: BE 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 (13.7%) | 1A3bii (12.2%) | 1A3biii (8.5%) | 1A4bi (6.3%) | 1A1a (4.2%) | 2A1 (4.1%) | 3Da1 (3.9%) | 3Da2a (3.5%) | 2C1 (3.4%) | 1A4cii (3.0%) | 1A3dii (3.0%) | 1A2gviii (2.7%) | 2B10a (2.6%) | 1A4ci (2.2%) | 1A4ai (2.1%) | 1A2e (2.0%) | 1A2c (1.9%) | 1A3ai(i) (1.8%) | 81.2% |
| NMVOC | 2024 | 2D3a (20.5%) | 3B1b (12.2%) | 3B1a (11.0%) | 1A4bi (7.1%) | 2D3d (6.4%) | 2B10a (4.1%) | 1A3bv (3.9%) | 2D3g (3.2%) | 2H2 (2.8%) | 3Da2a (2.3%) | 3B4gii (2.1%) | 1A4ci (1.9%) | 1A3bi (1.5%) | 1B2av (1.4%) | 80.5% | ||||
| SOx | 2024 | 2C1 (23.2%) | 2A1 (12.3%) | 2A6 (10.3%) | 1B2aiv (10.2%) | 2B10a (7.3%) | 2C7c (6.7%) | 2A3 (5.4%) | 1A1a (4.7%) | 80.2% | ||||||||||
| NH3 | 2024 | 3Da2a (18.7%) | 3B1b (17.1%) | 3B3 (17.1%) | 3B1a (11.7%) | 3Da3 (8.7%) | 3Da1 (7.8%) | 81.2% | ||||||||||||
| PM2.5 | 2024 | 1A4bi (47.5%) | 1A3bvi (8.8%) | 5E (4.7%) | 1A2gviii (4.2%) | 1A3bvii (4.0%) | 2A5c (3.9%) | 2A5b (2.4%) | 2G (1.7%) | 2A6 (1.6%) | 1A4cii (1.3%) | 80.2% | ||||||||
| PM10 | 2024 | 1A4bi (28.3%) | 2A5b (13.9%) | 1A3bvi (9.7%) | 2A5c (6.8%) | 1A3bvii (4.3%) | 3Dc (3.9%) | 2A5a (3.6%) | 3B4gii (2.8%) | 5E (2.7%) | 1A2gviii (2.6%) | 2L (1.7%) | 80.4% | |||||||
| TSP | 2024 | 2A5b (24.8%) | 1A4bi (15.9%) | 2A5c (7.1%) | 1A3bvi (6.7%) | 2A5a (5.6%) | 3B3 (5.1%) | 1A3bvii (4.6%) | 2L (3.7%) | 3B4gi (3.5%) | 3B4gii (3.0%) | 80.1% | ||||||||
| BC | 2024 | 1A4bi (46.9%) | 1A3bvi (15.3%) | 1A2gviii (6.4%) | 1A3bi (5.7%) | 1A4cii (4.4%) | 1A3bii (3.5%) | 82.2% | ||||||||||||
| CO | 2024 | 2C1 (37.2%) | 1A4bi (22.7%) | 1A3bi (11.6%) | 1A4bii (6.6%) | 1A4cii (2.4%) | 80.5% | |||||||||||||
| Pb | 2024 | 1A3bvi (62.8%) | 2C1 (11.9%) | 1A4bi (4.5%) | 2C7c (3.0%) | 82.3% | ||||||||||||||
| Cd | 2024 | 1A4bi (27.8%) | 2C1 (13.7%) | 2G (11.2%) | 1A1a (7.2%) | 1A2gviii (7.0%) | 1A2d (6.2%) | 1A2c (5.2%) | 1A3bvi (3.9%) | 82.1% | ||||||||||
| Hg | 2024 | 2A1 (16.3%) | 2C1 (14.0%) | 1A1a (11.1%) | 1A2c (9.6%) | 1A4bi (8.7%) | 2C7c (6.9%) | 1A3bi (4.7%) | 2A3 (3.2%) | 2A2 (2.7%) | 1A2gviii (2.4%) | 1A2f (2.3%) | 82.0% | |||||||
| As | 2024 | 1A3bvi (16.4%) | 1A2c (15.4%) | 1A1a (14.0%) | 2C7c (10.5%) | 2C1 (6.5%) | 1A2gviii (6.0%) | 5C1biv (5.1%) | 1A2d (3.3%) | 1A4bi (3.0%) | 80.3% | |||||||||
| Cr | 2024 | 1A3bvi (46.9%) | 2C1 (22.8%) | 1A4bi (7.3%) | 2G (4.1%) | 81.1% | ||||||||||||||
| Cu | 2024 | 1A3bvi (80.8%) | 80.8% | |||||||||||||||||
| Ni | 2024 | 1A3bvi (14.9%) | 2G (14.6%) | 2C1 (14.4%) | 1A1a (6.2%) | 1A2c (6.0%) | 1A4ai (4.3%) | 1A2f (4.0%) | 1B2aiv (3.7%) | 1A1b (3.6%) | 1A3dii (2.2%) | 2C7c (2.1%) | 2A1 (2.0%) | 2B10a (2.0%) | 80.0% | |||||
| Se | 2024 | 2A3 (36.6%) | 1A2c (17.3%) | 2A1 (8.3%) | 2G (5.4%) | 1A3bvi (5.1%) | 2A6 (4.7%) | 1A1a (4.0%) | 81.3% | |||||||||||
| Zn | 2024 | 1A3bvi (34.2%) | 2C7c (18.0%) | 1A4bi (15.3%) | 2G (9.1%) | 2C1 (6.5%) | 83.1% | |||||||||||||
| DIOX | 2024 | 1A1a (59.4%) | 5E (13.8%) | 1A4bi (12.4%) | 85.7% | |||||||||||||||
| PAH | 2024 | 1A4bi (73.0%) | 1A4ai (5.5%) | 1A3bi (4.7%) | 83.1% | |||||||||||||||
| HCB | 2024 | 5C1biii (52.7%) | 1A1a (14.3%) | 2A1 (9.2%) | 5C1bii (8.9%) | 85.0% | ||||||||||||||
| PCB | 2024 | 2A1 (58.0%) | 2C1 (14.9%) | 2K (6.3%) | 2A2 (4.8%) | 84.0% | ||||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A3biii (22.5%) | 1A3bi (22.2%) | 1A1a (6.0%) | 1A4bi (5.2%) | 1A3bii (4.7%) | 2A1 (4.1%) | 3Da1 (2.3%) | 1A4cii (2.3%) | 2B10a (2.2%) | 2C1 (2.0%) | 1A3dii (2.0%) | 3Da2a (1.9%) | 2A3 (1.9%) | 1A2c (1.6%) | 80.8% | ||
| NMVOC | 2010 | 2D3a (16.1%) | 3B1b (10.8%) | 2D3d (10.1%) | 1A4bi (8.1%) | 2B10a (6.7%) | 3B1a (6.1%) | 1A3bi (4.0%) | 2D3g (3.4%) | 1B2aiv (2.3%) | 2D3h (2.2%) | 2H2 (2.0%) | 1A3biv (1.8%) | 3Da2a (1.8%) | 1A4cii (1.8%) | 1A3bv (1.8%) | 2D3e (1.7%) | 80.7% |
| SOx | 2010 | 1A4bi (14.6%) | 1B2aiv (13.7%) | 2C1 (8.3%) | 2A1 (7.8%) | 2A3 (7.5%) | 2B10a (5.3%) | 2A6 (5.3%) | 1A1a (4.6%) | 1B2c (4.5%) | 2C7c (3.2%) | 1A2a (3.1%) | 1A4ci (2.7%) | 80.6% | ||||
| NH3 | 2010 | 3B3 (22.6%) | 3Da2a (20.6%) | 3B1b (19.4%) | 3Da3 (8.8%) | 3B1a (8.3%) | 3Da1 (6.7%) | 86.4% | ||||||||||
| PM2.5 | 2010 | 1A4bi (47.1%) | 1A3bi (9.0%) | 1A3bvi (4.7%) | 2C1 (4.3%) | 1A3biii (3.6%) | 2A5b (3.1%) | 1A3bii (2.6%) | 2G (2.1%) | 5E (2.1%) | 2A5c (2.1%) | 80.6% | ||||||
| PM10 | 2010 | 1A4bi (30.7%) | 2A5b (19.6%) | 1A3bvi (5.8%) | 1A3bi (5.7%) | 2A5c (4.0%) | 2C1 (3.3%) | 3Dc (2.7%) | 1A3bvii (2.4%) | 2A5a (2.4%) | 1A3biii (2.3%) | 1A3bii (1.7%) | 80.5% | |||||
| TSP | 2010 | 2A5b (36.5%) | 1A4bi (18.1%) | 3B3 (4.5%) | 2A5c (4.3%) | 1A3bvi (4.1%) | 2A5a (3.8%) | 1A3bi (3.2%) | 1A3bvii (2.7%) | 2C1 (2.6%) | 3Dc (1.5%) | 81.2% | ||||||
| BC | 2010 | 1A3bi (30.3%) | 1A4bi (25.6%) | 1A3biii (11.9%) | 1A3bii (8.9%) | 1A3bvi (5.2%) | 81.9% | |||||||||||
| CO | 2010 | 2C1 (32.1%) | 1A4bi (18.3%) | 1A3bi (12.4%) | 2A2 (7.2%) | 1A2a (6.1%) | 1A3biii (3.6%) | 1A3biv (3.4%) | 83.2% | |||||||||
| Pb | 2010 | 2C1 (44.8%) | 1A3bvi (23.1%) | 2C7c (5.2%) | 2A2 (4.9%) | 2I (4.0%) | 81.9% | |||||||||||
| Cd | 2010 | 2C1 (27.8%) | 1A4bi (17.7%) | 2G (10.0%) | 1A1a (6.6%) | 2A3 (5.4%) | 1B1b (4.6%) | 1A2a (3.8%) | 1A2gviii (3.4%) | 1A2c (3.2%) | 82.4% | |||||||
| Hg | 2010 | 2C1 (22.8%) | 1A1a (15.0%) | 2A1 (13.2%) | 2B10a (11.6%) | 1A4bi (5.1%) | 1A2c (3.9%) | 2A2 (3.4%) | 2C7c (3.2%) | 1A2a (2.7%) | 80.9% | |||||||
| As | 2010 | 2C1 (22.7%) | 2C7c (17.3%) | 1A1a (15.0%) | 1A3bvi (6.5%) | 1A2c (5.7%) | 1A2a (4.9%) | 2A3 (3.3%) | 2A2 (2.7%) | 5C1biv (2.2%) | 80.3% | |||||||
| Cr | 2010 | 2C1 (39.3%) | 1A3bvi (24.6%) | 1A2a (10.4%) | 1A4bi (4.0%) | 2C7c (3.1%) | 81.3% | |||||||||||
| Cu | 2010 | 1A3bvi (77.6%) | 2G (12.1%) | 89.7% | ||||||||||||||
| Ni | 2010 | 2C1 (20.3%) | 1B2aiv (13.8%) | 1A2c (7.2%) | 1A2a (6.3%) | 2G (6.3%) | 1A3bvi (6.0%) | 1A2e (4.5%) | 2B10a (4.3%) | 1A4ai (4.2%) | 1A4ci (3.8%) | 1A2gviii (2.8%) | 1A1a (2.6%) | 82.3% | ||||
| Se | 2010 | 2A3 (79.4%) | 1A1a (10.1%) | 89.5% | ||||||||||||||
| Zn | 2010 | 2C1 (31.4%) | 1A3bvi (23.7%) | 1A4bi (11.5%) | 2C7c (11.3%) | 2G (6.6%) | 84.4% | |||||||||||
| DIOX | 2010 | 1A4bi (29.4%) | 5C2 (23.4%) | 5E (13.3%) | 2C1 (12.7%) | 1A3bi (8.5%) | 87.3% | |||||||||||
| PAH | 2010 | 1A4bi (59.4%) | 1B1b (19.6%) | 2C1 (3.8%) | 82.8% | |||||||||||||
| HCB | 2010 | 2A1 (62.8%) | 2C1 (19.4%) | 82.2% | ||||||||||||||
| PCB | 2010 | 2A1 (61.0%) | 2C1 (19.6%) | 80.6% | ||||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2005 | 1A3biii (24.2%) | 1A3bi (17.8%) | 1A1a (10.5%) | 1A4bi (4.3%) | 2A1 (4.3%) | 1A3bii (3.6%) | 1A2a (3.1%) | 2A3 (2.5%) | 2B10a (2.1%) | 1A3dii (2.1%) | 1A4cii (1.9%) | 2A2 (1.8%) | 3Da1 (1.8%) | 80.1% | |||
| NMVOC | 2005 | 2D3d (14.6%) | 2D3a (12.5%) | 3B1b (8.8%) | 1A3bi (7.2%) | 2B10a (6.7%) | 1A4bi (5.2%) | 3B1a (4.7%) | 2D3h (3.8%) | 1B2aiv (3.7%) | 2D3g (3.5%) | 1A3biv (2.2%) | 1A3bv (1.9%) | 3Da2a (1.6%) | 1A3biii (1.6%) | 2H2 (1.6%) | 1A4cii (1.5%) | 81.0% |
| SOx | 2005 | 1A1a (21.4%) | 1A4bi (13.2%) | 1B2aiv (9.0%) | 2A6 (6.4%) | 1A1b (5.2%) | 2A3 (4.8%) | 2C1 (4.5%) | 1A4ci (4.1%) | 2A1 (3.7%) | 2B10a (3.3%) | 1A2a (3.2%) | 1A2e (3.1%) | 81.9% | ||||
| NH3 | 2005 | 3B3 (22.3%) | 3Da2a (21.7%) | 3B1b (17.8%) | 3Da3 (9.0%) | 3B1a (8.1%) | 3Da1 (8.1%) | 87.0% | ||||||||||
| PM2.5 | 2005 | 1A4bi (34.6%) | 2C1 (13.3%) | 1A3bi (8.8%) | 1A3biii (5.6%) | 1A3bvi (4.0%) | 1A3bii (3.0%) | 2A5c (1.9%) | 5E (1.8%) | 1A1a (1.8%) | 2G (1.8%) | 1A3bvii (1.7%) | 2A6 (1.5%) | 2A5b (1.5%) | 81.4% | |||
| PM10 | 2005 | 1A4bi (24.1%) | 2C1 (12.5%) | 2A5b (10.3%) | 1A3bi (6.0%) | 1A3bvi (5.2%) | 2A5c (3.8%) | 1A3biii (3.8%) | 3Dc (2.6%) | 1A1a (2.4%) | 2A5a (2.3%) | 1A3bvii (2.2%) | 1A3bii (2.1%) | 1B1b (1.5%) | 2G (1.3%) | 80.1% | ||
| TSP | 2005 | 2A5b (20.2%) | 1A4bi (15.0%) | 2C1 (12.4%) | 2A5c (4.4%) | 3B3 (4.3%) | 1A3bvi (3.9%) | 2A5a (3.9%) | 1A3bi (3.5%) | 1A1a (2.9%) | 1A3bvii (2.6%) | 1B1b (2.6%) | 1A3biii (2.3%) | 2A2 (2.2%) | 80.3% | |||
| BC | 2005 | 1A3bi (27.5%) | 1A3biii (17.2%) | 1A4bi (16.5%) | 1A3bii (9.4%) | 2C1 (6.2%) | 1A3bvi (4.2%) | 81.0% | ||||||||||
| CO | 2005 | 2C1 (30.8%) | 1A2a (21.5%) | 1A3bi (16.2%) | 1A4bi (9.4%) | 2A2 (4.5%) | 82.4% | |||||||||||
| Pb | 2005 | 2C1 (62.0%) | 1A3bvi (12.6%) | 2C7c (11.7%) | 86.2% | |||||||||||||
| Cd | 2005 | 2C1 (27.9%) | 2C7c (10.8%) | 1A4bi (9.0%) | 5C1biv (8.9%) | 2G (8.1%) | 1B1b (7.1%) | 2A3 (5.7%) | 1A1a (5.3%) | 82.9% | ||||||||
| Hg | 2005 | 2C1 (29.7%) | 2B10a (12.2%) | 2A1 (10.7%) | 1A1a (9.1%) | 1A1c (7.8%) | 2C7c (5.1%) | 1A4bi (4.0%) | 1A2c (2.9%) | 81.7% | ||||||||
| As | 2005 | 2C1 (27.3%) | 2C7c (24.7%) | 1A1a (13.4%) | 2A3 (3.9%) | 1A3bvi (3.8%) | 1A2c (3.6%) | 5C1biv (3.2%) | 1A2a (2.4%) | 82.3% | ||||||||
| Cr | 2005 | 2C1 (51.0%) | 1A3bvi (18.5%) | 1A1a (5.5%) | 1A2a (2.9%) | 1B1b (2.8%) | 80.6% | |||||||||||
| Cu | 2005 | 1A3bvi (74.9%) | 2G (10.9%) | 85.7% | ||||||||||||||
| Ni | 2005 | 1A1b (22.9%) | 1A1a (14.5%) | 2C1 (11.5%) | 1A2c (7.9%) | 1A4ci (6.7%) | 1A2e (6.6%) | 1B2aiv (6.1%) | 2B10a (3.7%) | 1A2d (2.4%) | 82.1% | |||||||
| Se | 2005 | 2A3 (92.3%) | 92.3% | |||||||||||||||
| Zn | 2005 | 2C1 (41.2%) | 1A3bvi (18.9%) | 2C7c (14.4%) | 1A4bi (6.5%) | 80.9% | ||||||||||||
| DIOX | 2005 | 5C2 (26.7%) | 2C1 (24.8%) | 1A4bi (19.9%) | 5E (9.8%) | 81.3% | ||||||||||||
| PAH | 2005 | 2C1 (36.1%) | 1A4bi (31.9%) | 1B1b (22.3%) | 90.3% | |||||||||||||
| HCB | 2005 | 2A1 (43.6%) | 2C1 (33.2%) | 1A1a (22.4%) | 99.1% | |||||||||||||
| PCB | 2005 | 2C1 (72.4%) | 2K (22.6%) | 95.0% | ||||||||||||||