Technical Annual Status Report (Stage 2) for the CLRTAP Inventory Review: Synthesis and Assessment Country report
KEY CATEGORY ANALYSIS
Party: PT 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 (18.4%) | 1A2f (11.6%) | 1A3bii (10.8%) | 1A3biii (9.5%) | 1A1a (7.8%) | 1A3dii (4.7%) | 1A2d (4.6%) | 2H1 (3.9%) | 1A3ai(i) (3.2%) | 3Da1 (2.8%) | 3Da3 (2.8%) | 80.0% | |||
| NMVOC | 2024 | 2D3a (11.1%) | 2D3d (10.8%) | 1A4bi (8.9%) | 2H2 (8.5%) | 2D3g (8.4%) | 2D3i (6.9%) | 1A2f (5.8%) | 2H1 (4.9%) | 1A3bv (3.4%) | 3Da2a (2.9%) | 3B4gii (2.8%) | 1B2av (2.7%) | 3B1a (2.4%) | 1A3bi (2.1%) | 81.8% |
| SOx | 2024 | 1A1a (31.0%) | 1A2d (24.9%) | 1A2f (13.7%) | 2H1 (11.0%) | 80.7% | ||||||||||
| NH3 | 2024 | 3Da2a (20.0%) | 3Da1 (16.9%) | 3Da3 (16.2%) | 3B3 (9.4%) | 3B4gii (9.1%) | 3B1a (8.0%) | 3B4gi (3.8%) | 83.5% | |||||||
| PM2.5 | 2024 | 1A4bi (42.4%) | 2H1 (16.6%) | 1A2f (9.9%) | 5C2 (3.0%) | 1A1a (2.5%) | 1A2d (2.4%) | 1A3bvi (2.3%) | 1A3bi (2.2%) | 81.3% | ||||||
| PM10 | 2024 | 1A4bi (33.7%) | 2H1 (15.6%) | 1A2f (7.7%) | 2A5a (3.6%) | 1A3bvi (3.5%) | 2A2 (3.5%) | 2A5b (3.3%) | 1A2d (2.5%) | 5C2 (2.4%) | 1A1a (2.2%) | 3B4giii (1.8%) | 2B10a (1.8%) | 81.6% | ||
| TSP | 2024 | 1A4bi (21.0%) | 1A2f (15.7%) | 2H1 (10.4%) | 2A5b (6.5%) | 2A2 (5.3%) | 2A5a (5.3%) | 2I (3.7%) | 3B4gi (3.3%) | 2D3b (2.8%) | 1A3bvi (2.6%) | 2D3g (1.8%) | 1A3bvii (1.7%) | 80.3% | ||
| BC | 2024 | 1A4bi (39.5%) | 1A3bi (14.7%) | 1A3bii (13.2%) | 1A3bvi (4.9%) | 1A2f (4.9%) | 1A4cii (4.0%) | 81.3% | ||||||||
| CO | 2024 | 1A4bi (40.0%) | 1A3bi (15.3%) | 5C2 (10.1%) | 1B2aiv (9.2%) | 1A3biv (4.7%) | 1A2d (3.0%) | 82.3% | ||||||||
| Pb | 2024 | 1A3bvi (22.4%) | 1A3bi (21.9%) | 2A3 (16.9%) | 2C1 (15.5%) | 1A2f (5.1%) | 81.8% | |||||||||
| Cd | 2024 | 1A4bi (23.8%) | 2C1 (22.1%) | 2A3 (12.2%) | 5C2 (11.4%) | 1A2d (9.0%) | 2G (6.5%) | 85.0% | ||||||||
| Hg | 2024 | 2K (16.3%) | 2C1 (14.7%) | 1A2d (12.9%) | 1B2d (11.8%) | 5C1bv (8.0%) | 1B2aiv (6.0%) | 1A2f (5.9%) | 5C2 (4.8%) | 80.5% | ||||||
| As | 2024 | 2A3 (43.3%) | 1A2f (19.7%) | 1A1a (8.1%) | 1A3bvi (7.0%) | 1A4ai (4.3%) | 82.4% | |||||||||
| Cr | 2024 | 1A2f (32.1%) | 1A3bvi (31.4%) | 1A4bi (8.5%) | 2A3 (7.6%) | 1A2d (6.9%) | 86.4% | |||||||||
| Cu | 2024 | 1A3bvi (81.3%) | 81.3% | |||||||||||||
| Ni | 2024 | 1A2f (23.2%) | 1A3dii (15.2%) | 1A1a (14.8%) | 1A4ci (10.2%) | 2C1 (9.0%) | 1A2d (7.2%) | 1A4ai (5.0%) | 84.5% | |||||||
| Se | 2024 | 2A3 (79.2%) | 1A2f (12.3%) | 91.6% | ||||||||||||
| Zn | 2024 | 1A3bvi (28.0%) | 1A4bi (24.2%) | 1A2d (18.0%) | 2C1 (10.3%) | 80.6% | ||||||||||
| DIOX | 2024 | 1A4bi (36.7%) | 5C1bi (14.6%) | 5E (13.9%) | 2C1 (11.3%) | 2D3i (9.4%) | 85.9% | |||||||||
| PAH | 2024 | 1A4bi (74.6%) | 2C1 (8.3%) | 82.9% | ||||||||||||
| HCB | 2024 | 5C1biii (69.7%) | 1A4bi (12.4%) | 82.1% | ||||||||||||
| PCB | 2024 | 5C1bi (74.8%) | 2K (18.0%) | 92.8% | ||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A3biii (18.5%) | 1A3bi (16.2%) | 1A1a (14.3%) | 1A3bii (10.0%) | 1A2f (9.8%) | 1A2gviii (3.3%) | 1A3dii (2.7%) | 1A2d (2.3%) | 2H1 (2.1%) | 3Da1 (2.0%) | 81.1% | ||||
| NMVOC | 2010 | 2D3d (10.8%) | 2D3a (10.7%) | 1A4bi (8.3%) | 2H2 (7.7%) | 2D3g (7.5%) | 1A3bi (6.7%) | 2D3i (5.7%) | 1A2f (4.8%) | 1A3bv (3.6%) | 2H1 (3.6%) | 2D3e (3.3%) | 1B2av (2.8%) | 3B1a (2.3%) | 1A3biv (2.3%) | 80.3% |
| SOx | 2010 | 1A1a (28.3%) | 1A2d (14.7%) | 1A2f (10.9%) | 1A1b (10.5%) | 2H1 (7.6%) | 1A2gviii (6.3%) | 1B2aiv (5.2%) | 83.4% | |||||||
| NH3 | 2010 | 3Da2a (19.9%) | 3Da3 (17.1%) | 3Da1 (15.3%) | 3B3 (10.0%) | 3B1a (9.9%) | 3B4gii (5.5%) | 3B1b (3.2%) | 81.0% | |||||||
| PM2.5 | 2010 | 1A4bi (38.4%) | 2H1 (11.8%) | 1A2f (10.5%) | 1A3bii (4.6%) | 2B10a (4.4%) | 1A3bi (3.8%) | 1A1a (2.7%) | 5C2 (2.4%) | 1A3bvi (2.1%) | 80.6% | |||||
| PM10 | 2010 | 1A4bi (28.8%) | 2H1 (10.5%) | 2A5b (9.9%) | 1A2f (7.7%) | 2A5a (3.9%) | 1A3bii (3.4%) | 2B10a (3.2%) | 1A3bvi (3.0%) | 1A3bi (2.8%) | 2A2 (2.4%) | 1A1a (2.4%) | 5C2 (1.9%) | 1A2d (1.6%) | 81.6% | |
| TSP | 2010 | 2A5b (18.6%) | 1A4bi (17.0%) | 1A2f (14.9%) | 2H1 (6.7%) | 2A5a (5.8%) | 2A2 (3.5%) | 2D3b (3.5%) | 2I (2.7%) | 2B10a (2.3%) | 1A3bvi (2.1%) | 1A3bii (1.9%) | 3B4gi (1.9%) | 81.0% | ||
| BC | 2010 | 1A4bi (28.6%) | 1A3bii (21.2%) | 1A3bi (19.1%) | 1A3biii (9.2%) | 1A2f (4.3%) | 82.5% | |||||||||
| CO | 2010 | 1A3bi (28.1%) | 1A4bi (27.7%) | 1B2aiv (15.1%) | 5C2 (6.1%) | 1A3biv (3.7%) | 80.6% | |||||||||
| Pb | 2010 | 1A3bi (26.1%) | 1A3bvi (22.6%) | 2A3 (14.8%) | 2C1 (11.8%) | 1A2f (6.4%) | 81.7% | |||||||||
| Cd | 2010 | 1A4bi (19.3%) | 2C1 (15.5%) | 1A2f (10.9%) | 2G (10.8%) | 2A3 (9.4%) | 5C2 (9.3%) | 1B2aiv (4.5%) | 1A1a (4.4%) | 84.1% | ||||||
| Hg | 2010 | 1A1a (15.1%) | 2K (13.6%) | 1B2aiv (12.9%) | 2C1 (10.0%) | 1B2d (9.9%) | 1A2f (8.8%) | 1A2d (8.5%) | 5C2 (3.8%) | 82.5% | ||||||
| As | 2010 | 1A1a (31.1%) | 2A3 (23.8%) | 1A2f (16.8%) | 1A4ai (7.5%) | 1A3bvi (4.6%) | 83.8% | |||||||||
| Cr | 2010 | 1A2f (35.4%) | 1A3bvi (27.6%) | 1A4bi (6.5%) | 2A3 (5.5%) | 1B2aiv (4.5%) | 1A2d (3.9%) | 83.5% | ||||||||
| Cu | 2010 | 1A3bvi (77.8%) | 2G (11.6%) | 89.4% | ||||||||||||
| Ni | 2010 | 1A1b (32.4%) | 1A2f (13.5%) | 1A1a (11.0%) | 1A4ai (6.7%) | 1A2gviii (5.4%) | 1A3dii (5.2%) | 1A2d (4.6%) | 1A4ci (4.2%) | 83.1% | ||||||
| Se | 2010 | 2A3 (48.9%) | 1A1a (31.8%) | 80.7% | ||||||||||||
| Zn | 2010 | 1A3bvi (27.0%) | 1A4bi (20.8%) | 1A2d (11.0%) | 1A2f (10.9%) | 2C1 (7.6%) | 2G (7.5%) | 84.9% | ||||||||
| DIOX | 2010 | 1A4bi (36.7%) | 5E (17.5%) | 5C1bi (13.9%) | 2D3i (8.7%) | 2C1 (8.7%) | 85.6% | |||||||||
| PAH | 2010 | 1A4bi (72.7%) | 2C1 (6.1%) | 5C2 (4.0%) | 82.8% | |||||||||||
| HCB | 2010 | 1A1a (36.8%) | 5C1biii (27.3%) | 3Df (15.4%) | 1A4bi (10.6%) | 90.2% | ||||||||||
| PCB | 2010 | 2K (81.7%) | 81.7% | |||||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2005 | 1A1a (28.6%) | 1A3biii (18.0%) | 1A3bi (12.7%) | 1A2f (8.2%) | 1A3bii (7.1%) | 1A2gviii (2.8%) | 1A4cii (2.0%) | 1A3dii (1.8%) | 81.3% | ||||||
| NMVOC | 2005 | 2D3d (11.2%) | 1A3bi (9.7%) | 2D3a (8.6%) | 1A4bi (8.5%) | 2D3e (6.8%) | 2D3g (6.7%) | 2D3i (6.0%) | 2H2 (5.6%) | 1A3bv (4.2%) | 1A2f (3.3%) | 1A3biv (3.0%) | 1B2av (2.7%) | 2H1 (2.5%) | 3B1a (2.2%) | 80.9% |
| SOx | 2005 | 1A1a (62.7%) | 1A1b (8.5%) | 1A2d (5.0%) | 2B10a (4.1%) | 80.2% | ||||||||||
| NH3 | 2005 | 3Da2a (19.8%) | 3Da1 (16.3%) | 3Da3 (14.7%) | 3B1a (10.7%) | 3B3 (9.6%) | 3B4gii (5.1%) | 2B10a (3.8%) | 3B1b (3.5%) | 83.5% | ||||||
| PM2.5 | 2005 | 1A4bi (40.3%) | 1A2f (12.8%) | 2H1 (8.7%) | 1A3bii (4.6%) | 2B10a (4.1%) | 1A1a (3.6%) | 1A3bi (2.9%) | 1A3biii (2.6%) | 5C2 (2.3%) | 81.8% | |||||
| PM10 | 2005 | 1A4bi (31.4%) | 1A2f (9.7%) | 2H1 (8.0%) | 2A5b (5.1%) | 2A5a (5.1%) | 1A1a (4.4%) | 1A3bii (3.5%) | 2B10a (3.2%) | 1A3bvi (2.6%) | 1A3bi (2.2%) | 1A3biii (2.0%) | 2A2 (1.9%) | 1A2d (1.8%) | 81.0% | |
| TSP | 2005 | 1A2f (19.2%) | 1A4bi (18.5%) | 2A5b (9.6%) | 2A5a (7.8%) | 2D3b (5.9%) | 2H1 (5.1%) | 1A1a (3.5%) | 2I (3.1%) | 2A2 (2.7%) | 2B10a (2.4%) | 1A3bii (2.0%) | 1A3bvi (1.8%) | 81.6% | ||
| BC | 2005 | 1A4bi (30.5%) | 1A3bii (20.5%) | 1A3bi (14.0%) | 1A3biii (12.0%) | 1A2f (5.1%) | 82.1% | |||||||||
| CO | 2005 | 1A3bi (35.4%) | 1A4bi (25.2%) | 1B2aiv (13.2%) | 5C2 (5.0%) | 1A3biv (4.4%) | 83.3% | |||||||||
| Pb | 2005 | 1A3bi (32.1%) | 1A3bvi (20.5%) | 2C1 (11.1%) | 2A3 (10.9%) | 1A2f (6.8%) | 81.4% | |||||||||
| Cd | 2005 | 1A4bi (21.4%) | 2C1 (14.2%) | 1A2f (9.8%) | 5C2 (9.4%) | 1A1a (9.3%) | 2G (8.6%) | 2A3 (7.1%) | 1B2aiv (4.9%) | 84.7% | ||||||
| Hg | 2005 | 1A1a (26.4%) | 1B2aiv (13.0%) | 2K (11.5%) | 1A2f (9.5%) | 2C1 (8.5%) | 1A2d (6.6%) | 5C2 (3.6%) | 1A4ai (3.6%) | 82.6% | ||||||
| As | 2005 | 1A1a (39.9%) | 1A4ai (20.3%) | 1A2f (13.9%) | 2A3 (11.7%) | 85.8% | ||||||||||
| Cr | 2005 | 1A2f (33.8%) | 1A3bvi (24.2%) | 1A4bi (7.2%) | 1A1a (7.0%) | 1B2aiv (4.8%) | 2A3 (4.0%) | 80.9% | ||||||||
| Cu | 2005 | 1A3bvi (70.1%) | 1A4ai (10.7%) | 80.9% | ||||||||||||
| Ni | 2005 | 1A1b (30.1%) | 1A1a (25.3%) | 1A4ai (14.1%) | 1A2f (8.8%) | 1A2gviii (3.9%) | 82.2% | |||||||||
| Se | 2005 | 1A1a (52.7%) | 2A3 (29.8%) | 82.5% | ||||||||||||
| Zn | 2005 | 1A3bvi (24.0%) | 1A4bi (23.0%) | 1A1a (10.3%) | 1A2f (9.6%) | 1A2d (9.3%) | 2C1 (7.0%) | 83.1% | ||||||||
| DIOX | 2005 | 1A4bi (32.7%) | 5C1bi (22.7%) | 5E (16.3%) | 2D3i (12.1%) | 83.9% | ||||||||||
| PAH | 2005 | 1A4bi (72.2%) | 1A4ai (5.4%) | 2C1 (5.0%) | 82.6% | |||||||||||
| HCB | 2005 | 1A1a (57.3%) | 3Df (12.9%) | 1A4bi (10.9%) | 81.0% | |||||||||||
| PCB | 2005 | 2K (80.8%) | 80.8% | |||||||||||||