Review Stage 2: Synthesis and Assessment Country report
KEY SOURCE ANALYSIS
Party: IT Submission year: 2022
Key categories analysis is increasingly important in order to prioritize emission sources and identify where the implementation of improvements is most effective. 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 2020, 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 | 2020 | 1A3bi (19.1%) | 1A3dii (15.0%) | 1A3biii (11.7%) | 1A4bi (6.8%) | 1A3bii (6.2%) | 1A4ai (5.5%) | 1A2f (5.0%) | 1A4cii (4.3%) | 1A1a (4.2%) | 3Da1 (4.0%) | 81.7% | |||
| NMVOC | 2020 | 2D3d (15.2%) | 1A4bi (15.1%) | 2D3a (14.3%) | 2D3g (5.7%) | 1A3bv (5.2%) | 3B1a (4.2%) | 3B1b (4.2%) | 1A4ai (3.2%) | 2H2 (3.2%) | 2D3i (3.2%) | 1A3biv (3.0%) | 2D3h (2.0%) | 1A3bi (1.9%) | 80.4% |
| SOx | 2020 | 1A2f (22.9%) | 1B2aiv (13.7%) | 1A3dii (9.8%) | 1A2gviii (6.7%) | 1A2a (6.7%) | 1A4bi (6.6%) | 1A1a (6.1%) | 1A4ai (5.3%) | 2B10a (5.0%) | 82.8% | ||||
| NH3 | 2020 | 3Da2a (18.4%) | 3B1b (18.2%) | 3Da1 (16.9%) | 3B1a (13.7%) | 3B3 (8.5%) | 3B4gii (3.7%) | 3Da2c (2.7%) | 82.1% | ||||||
| PM2.5 | 2020 | 1A4bi (65.2%) | 1A3dii (4.8%) | 5E (3.1%) | 1A2f (3.0%) | 1A3bvi (2.9%) | 2C1 (2.2%) | 81.1% | |||||||
| PM10 | 2020 | 1A4bi (53.1%) | 3Dc (6.2%) | 1A3bvi (4.2%) | 1A3dii (3.9%) | 1A2f (2.7%) | 5E (2.5%) | 1A3bvii (2.3%) | 2C1 (2.1%) | 2A1 (1.9%) | 1A3bi (1.6%) | 80.3% | |||
| TSP | 2020 | 1A4bi (50.1%) | 3Dc (4.9%) | 1A3bvi (4.5%) | 1A3bvii (3.6%) | 1A3dii (3.2%) | 1A2f (3.1%) | 2I (2.2%) | 2C1 (2.1%) | 5E (2.0%) | 3B4gii (1.9%) | 2A1 (1.7%) | 2A5b (1.6%) | 80.9% | |
| BC | 2020 | 1A4bi (49.7%) | 1A3bi (13.3%) | 1A3dii (6.9%) | 5C2 (5.6%) | 1A3biii (4.0%) | 1A4cii (3.6%) | 83.1% | |||||||
| CO | 2020 | 1A4bi (62.3%) | 1A3bi (9.5%) | 1A3biv (4.7%) | 1A2a (3.1%) | 1A3dii (2.8%) | 82.5% | ||||||||
| Pb | 2020 | 2C1 (37.8%) | 1A2f (36.4%) | 1A4bi (5.5%) | 1A3bvi (5.5%) | 85.3% | |||||||||
| Cd | 2020 | 2C1 (22.4%) | 1A2f (14.2%) | 1A2a (11.0%) | 1A4bi (9.5%) | 2G (8.8%) | 5C2 (8.7%) | 1A3bi (5.6%) | 80.3% | ||||||
| Hg | 2020 | 2C1 (44.2%) | 1A2b (9.9%) | 1A2f (9.4%) | 1A2a (6.9%) | 1A1a (6.4%) | 1B2d (5.9%) | 82.8% | |||||||
| As | 2020 | 1A2b (33.1%) | 1A1a (24.2%) | 1A2f (17.5%) | 1A2a (6.3%) | 81.0% | |||||||||
| Cr | 2020 | 2C1 (26.8%) | 1A1a (18.0%) | 1A2f (13.3%) | 1A3bvi (10.7%) | 1A2a (9.9%) | 1A3bi (3.4%) | 82.2% | |||||||
| Cu | 2020 | 1A3bvi (51.0%) | 1A3bi (26.8%) | 2C1 (3.9%) | 81.7% | ||||||||||
| Ni | 2020 | 1A2f (19.4%) | 1A3dii (16.2%) | 2C1 (13.3%) | 1A1a (13.1%) | 1A1b (9.7%) | 1A3bi (5.8%) | 1A2c (5.4%) | 82.8% | ||||||
| Se | 2020 | 1A2f (30.8%) | 1A1a (25.4%) | 2C1 (15.0%) | 1A3dii (5.2%) | 1A3bi (3.7%) | 1A1b (2.6%) | 82.6% | |||||||
| Zn | 2020 | 2C1 (81.6%) | 81.6% | ||||||||||||
| DIOX | 2020 | 1A4bi (33.2%) | 2C1 (27.0%) | 1A2b (15.3%) | 5E (14.7%) | 90.3% | |||||||||
| PAH | 2020 | 1A4bi (79.0%) | 2C1 (11.8%) | 90.8% | |||||||||||
| HCB | 2020 | 1A2b (37.3%) | 3Df (18.5%) | 1A4bi (11.5%) | 1A4ai (11.1%) | 5C1biii (5.6%) | 84.0% | ||||||||
| PCB | 2020 | 2C1 (71.2%) | 1A4bi (14.5%) | 85.7% | |||||||||||
| Component | Year | Key categories (Sorted from high to low from left to right) | Total | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NOx | 2010 | 1A3biii (20.0%) | 1A3bi (18.9%) | 1A3dii (10.0%) | 1A2f (7.8%) | 1A1a (5.8%) | 1A3bii (5.7%) | 1A4cii (5.4%) | 1A4bi (5.1%) | 1A4ai (3.8%) | 82.5% | |||||
| NMVOC | 2010 | 1A4bi (17.3%) | 2D3d (14.1%) | 2D3a (9.9%) | 1A3biv (6.9%) | 2D3g (4.9%) | 1A3bi (4.3%) | 1A3bv (4.1%) | 3B1a (3.3%) | 3B1b (3.1%) | 1A3dii (2.9%) | 2D3i (2.8%) | 1B2b (2.6%) | 2H2 (2.3%) | 1A4ai (2.1%) | 80.5% |
| SOx | 2010 | 1A2f (19.6%) | 1A1b (18.4%) | 1A1a (14.8%) | 1A3dii (12.8%) | 1B2aiv (11.2%) | 1A4bi (3.7%) | 80.6% | ||||||||
| NH3 | 2010 | 3B1b (18.7%) | 3Da2a (18.0%) | 3B1a (15.7%) | 3Da1 (12.7%) | 3B3 (9.0%) | 3B4gii (3.2%) | 3B4a (2.7%) | 80.1% | |||||||
| PM2.5 | 2010 | 1A4bi (60.9%) | 1A3bi (4.1%) | 1A3dii (4.0%) | 1A4cii (2.6%) | 1A3bvi (2.6%) | 1A3bii (2.3%) | 2C1 (2.3%) | 1A3biii (2.2%) | 81.1% | ||||||
| PM10 | 2010 | 1A4bi (51.0%) | 3Dc (4.3%) | 1A3bvi (4.0%) | 1A3bi (3.4%) | 1A3dii (3.3%) | 2A1 (2.5%) | 2C1 (2.4%) | 1A2f (2.2%) | 1A4cii (2.2%) | 1A3bvii (2.0%) | 1A2c (2.0%) | 1A3bii (1.9%) | 81.1% | ||
| TSP | 2010 | 1A4bi (48.9%) | 1A3bvi (4.3%) | 3Dc (3.5%) | 1A3bvii (3.3%) | 1A3bi (2.8%) | 1A3dii (2.7%) | 1A2f (2.6%) | 2C1 (2.4%) | 2A1 (2.2%) | 2A5b (2.1%) | 2I (2.0%) | 1A4cii (1.8%) | 1A2c (1.7%) | 80.2% | |
| BC | 2010 | 1A4bi (31.7%) | 1A3bi (20.8%) | 1A3bii (10.8%) | 1A4cii (9.2%) | 1A3biii (8.3%) | 80.8% | |||||||||
| CO | 2010 | 1A4bi (53.4%) | 1A3bi (15.6%) | 1A3biv (6.7%) | 1A2a (5.9%) | 81.6% | ||||||||||
| Pb | 2010 | 2C1 (30.8%) | 1A2f (26.8%) | 1A2a (17.5%) | 1A3bvi (5.7%) | 80.8% | ||||||||||
| Cd | 2010 | 2C1 (20.9%) | 1A2a (15.2%) | 1A2f (11.7%) | 1A4bi (11.1%) | 2G (9.5%) | 5C2 (6.5%) | 1A3bi (5.1%) | 80.0% | |||||||
| Hg | 2010 | 2C1 (30.5%) | 1B2d (14.7%) | 1A2f (12.1%) | 1A2a (10.0%) | 1A1a (7.9%) | 1A2b (5.4%) | 80.7% | ||||||||
| As | 2010 | 1A2f (49.7%) | 1A1a (20.2%) | 1A2a (11.0%) | 80.9% | |||||||||||
| Cr | 2010 | 2C1 (23.0%) | 1A1a (22.7%) | 1A2a (11.4%) | 1A3bvi (11.3%) | 1A2f (9.7%) | 1A3bi (3.1%) | 81.2% | ||||||||
| Cu | 2010 | 1A3bvi (49.0%) | 1A3bi (22.1%) | 1A2a (7.8%) | 1A3biv (6.4%) | 85.3% | ||||||||||
| Ni | 2010 | 1A1a (16.7%) | 1A2f (15.7%) | 1A1b (13.1%) | 1A2c (11.2%) | 1A3dii (11.1%) | 2C1 (9.2%) | 1A4bi (5.1%) | 82.0% | |||||||
| Se | 2010 | 1A1a (36.1%) | 1A2f (19.7%) | 2C1 (11.2%) | 1A2a (7.0%) | 1A3dii (4.0%) | 1A3bi (3.3%) | 81.3% | ||||||||
| Zn | 2010 | 2C1 (70.8%) | 1A2a (10.9%) | 81.6% | ||||||||||||
| DIOX | 2010 | 1A4bi (38.7%) | 2C1 (22.3%) | 1A2b (12.8%) | 5E (8.3%) | 82.0% | ||||||||||
| PAH | 2010 | 1A4bi (77.5%) | 2C1 (16.3%) | 93.7% | ||||||||||||
| HCB | 2010 | 1A2b (32.6%) | 1A4ai (17.3%) | 3Df (15.4%) | 1A4bi (11.4%) | 1A2a (9.4%) | 86.1% | |||||||||
| 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 (23.8%) | 1A3bi (18.6%) | 1A2f (8.1%) | 1A3dii (7.4%) | 1A1a (6.6%) | 1A4cii (6.0%) | 1A3bii (5.8%) | 1A4bi (3.4%) | 3Da1 (2.4%) | 82.1% | ||||||||
| NMVOC | 2005 | 2D3d (16.0%) | 1A3biv (11.4%) | 2D3a (9.5%) | 1A3bi (9.1%) | 1A4bi (8.0%) | 2D3g (4.5%) | 1A3bv (4.1%) | 1A3dii (3.2%) | 3B1b (3.0%) | 3B1a (2.9%) | 2D3i (2.5%) | 1B2b (2.3%) | 2H2 (2.1%) | 1B2aiv (2.0%) | 80.5% | |||
| SOx | 2005 | 1A1a (27.3%) | 1A1b (15.3%) | 1A2f (13.2%) | 1A3dii (12.1%) | 1B2aiv (7.8%) | 1A4bi (4.4%) | 80.1% | |||||||||||
| NH3 | 2005 | 3B1b (17.5%) | 3Da1 (16.8%) | 3Da2a (16.7%) | 3B1a (14.7%) | 3B3 (8.7%) | 1A3bi (3.6%) | 1B2d (3.1%) | 81.2% | ||||||||||
| PM2.5 | 2005 | 1A4bi (37.9%) | 1A4cii (6.1%) | 1A3bi (5.4%) | 1A3biii (5.2%) | 1A3dii (5.0%) | 1A3bii (5.0%) | 1A2f (3.7%) | 1A3bvi (3.1%) | 2C1 (3.0%) | 2A1 (2.4%) | 1A2c (2.0%) | 2G (1.8%) | 80.7% | |||||
| PM10 | 2005 | 1A4bi (29.2%) | 3Dc (4.9%) | 1A4cii (4.6%) | 1A3bvi (4.4%) | 1A3bi (4.1%) | 1A3biii (3.9%) | 1A3dii (3.9%) | 1A3bii (3.8%) | 1A2f (3.7%) | 2A1 (3.3%) | 3B4gii (2.9%) | 2C1 (2.9%) | 2A5b (2.6%) | 1A3bvii (2.3%) | 1A2c (2.0%) | 2G (1.6%) | 80.2% | |
| TSP | 2005 | 1A4bi (27.5%) | 1A3bvi (4.7%) | 1A2f (4.2%) | 2A5b (4.1%) | 3Dc (3.9%) | 1A4cii (3.8%) | 1A3bvii (3.7%) | 3B4gii (3.6%) | 1A3bi (3.3%) | 1A3dii (3.2%) | 1A3biii (3.1%) | 1A3bii (3.1%) | 2A1 (3.0%) | 2C1 (2.9%) | 2I (2.5%) | 2A2 (1.8%) | 3B3 (1.7%) | 80.1% |
| BC | 2005 | 1A3bi (18.7%) | 1A4cii (15.7%) | 1A3bii (15.3%) | 1A4bi (14.5%) | 1A3biii (13.3%) | 1A2gvii (4.1%) | 81.5% | |||||||||||
| CO | 2005 | 1A3bi (31.1%) | 1A4bi (26.3%) | 1A3biv (12.5%) | 1A2a (7.4%) | 1A3dii (3.5%) | 80.9% | ||||||||||||
| Pb | 2005 | 1A2f (26.3%) | 2C1 (24.1%) | 1A2a (14.8%) | 1A4ai (13.3%) | 1A2b (6.8%) | 85.3% | ||||||||||||
| Cd | 2005 | 1A4ai (23.3%) | 1A2a (14.1%) | 2C1 (13.9%) | 1A2f (8.4%) | 1A4bi (7.5%) | 2G (6.1%) | 1A2b (6.1%) | 5C2 (4.2%) | 83.7% | |||||||||
| Hg | 2005 | 2C1 (21.4%) | 1B2d (17.1%) | 1A4ai (13.6%) | 1A2f (11.3%) | 1A2a (8.2%) | 1A1a (6.9%) | 1A2b (5.5%) | 84.1% | ||||||||||
| As | 2005 | 1A2f (62.0%) | 1A1a (13.7%) | 1A2a (8.6%) | 84.3% | ||||||||||||||
| Cr | 2005 | 1A1a (21.1%) | 2C1 (20.4%) | 1A2a (11.5%) | 1A3bvi (9.9%) | 1A2f (8.6%) | 1A4ai (7.6%) | 1A2b (2.8%) | 81.8% | ||||||||||
| Cu | 2005 | 1A3bvi (46.5%) | 1A3bi (19.4%) | 1A2a (8.7%) | 1A3biv (8.0%) | 82.6% | |||||||||||||
| Ni | 2005 | 1A4ai (47.2%) | 1A1a (11.8%) | 1A4bi (7.4%) | 1A2f (7.0%) | 1A1b (5.3%) | 1A3dii (4.1%) | 82.7% | |||||||||||
| Se | 2005 | 1A1a (36.7%) | 1A2f (19.0%) | 2C1 (10.5%) | 1A2a (8.0%) | 1A3dii (3.9%) | 1A2gviii (3.2%) | 81.3% | |||||||||||
| Zn | 2005 | 2C1 (66.6%) | 1A2a (12.8%) | 1A3bvi (4.7%) | 84.1% | ||||||||||||||
| DIOX | 2005 | 2C1 (21.7%) | 1A4bi (21.5%) | 1A2a (17.3%) | 1A2b (13.3%) | 5E (8.9%) | 82.7% | ||||||||||||
| PAH | 2005 | 1A4bi (59.3%) | 2C1 (27.5%) | 86.8% | |||||||||||||||
| HCB | 2005 | 5C1biv (28.7%) | 1A2b (20.5%) | 1A4ai (19.6%) | 1A2a (12.4%) | 81.1% | |||||||||||||
| PCB | 2005 | 2C1 (59.1%) | 1A2a (17.0%) | 1A4ai (14.1%) | 90.1% | ||||||||||||||