Air pollution index (API) is used in Mainland China and includes only $SO_2$, $NO_2$ and $PM_{10}$. In 2016, air quality index (AQI) replaced API. AQI contains three more air pollutants (CO, $O_3$ and $PM_{2.5}$). Both the indices emphasize on t...
Air pollution index (API) is used in Mainland China and includes only $SO_2$, $NO_2$ and $PM_{10}$. In 2016, air quality index (AQI) replaced API. AQI contains three more air pollutants (CO, $O_3$ and $PM_{2.5}$). Both the indices emphasize on the effect of a single pollutant, whereas the contributions of all other pollutants are ignored. Therefore, in the present work, a novel air quality index (NAQI), which emphasizes on all air pollutants, has been introduced for the first time. The results showed that there were 19 d (5.2%) in API, 28 d (7.7%) in AQI and 183 d (50.1%) in NAQI when the indices were more than 100. In API, $PM_{10}$ and $SO_2$ were regarded as the primary pollutants, whereas all five air pollutants in AQI were regarded as primary. Furthermore, four air pollutants (other than the CO) in NAQI were regarded as primary pollutants. $PM_{10}$, as being the primary pollutant, contributed greatly in these air quality indices, and accounted for 51.2% (API), 37.0% (AQI) and 52.6% (NAQI). The results also showed that particulate matter pollution was significantly high in Luzhou, where stricter pollution control measures should be implemented.
Air pollution index (API) is used in Mainland China and includes only $SO_2$, $NO_2$ and $PM_{10}$. In 2016, air quality index (AQI) replaced API. AQI contains three more air pollutants (CO, $O_3$ and $PM_{2.5}$). Both the indices emphasize on the effect of a single pollutant, whereas the contributions of all other pollutants are ignored. Therefore, in the present work, a novel air quality index (NAQI), which emphasizes on all air pollutants, has been introduced for the first time. The results showed that there were 19 d (5.2%) in API, 28 d (7.7%) in AQI and 183 d (50.1%) in NAQI when the indices were more than 100. In API, $PM_{10}$ and $SO_2$ were regarded as the primary pollutants, whereas all five air pollutants in AQI were regarded as primary. Furthermore, four air pollutants (other than the CO) in NAQI were regarded as primary pollutants. $PM_{10}$, as being the primary pollutant, contributed greatly in these air quality indices, and accounted for 51.2% (API), 37.0% (AQI) and 52.6% (NAQI). The results also showed that particulate matter pollution was significantly high in Luzhou, where stricter pollution control measures should be implemented.
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대상 데이터
The data of air pollutant concentrations, including SO2, NO2, PM10, CO and O3, were collected daily in 2009 at four environmental monitoring sites in Luzhou, which is a southern city of Sichuan basin in China. The statistical results showed that the annual mass concentrations of SO2, CO, and O3 in Luzhou were higher than those in other big cities (Beijing, Shanghai, Guangzhou, Chengdu, and Seoul).
이론/모형
According to NAQI values, the number of days were 23, 159, 116, 44, 22 and 1 for Grades I, II, III, IV, V and VI, respectively. Six grades of air quality were obtained using the NAQI method. According to NAQI values, there were 183 days when NAQI > 100, and these accounted for 50.
성능/효과
According to these air pollutants’ concentration data, three different AQIs of API, AQI and NAQI were compared. The results showed that there were 19 d (5.2% of the total days) in API, 28 d (7.7% of the total days) in AQI and 183 d (50.1% of the total days) in NAQI when these indices were higher than 100. Overall, depending on the NAQI values, the urban air quality became worse.
, were collected daily in 2009 at four environmental monitoring sites in Luzhou, which is a southern city of Sichuan basin in China. The statistical results showed that the annual mass concentrations of SO2, CO, and O3 in Luzhou were higher than those in other big cities (Beijing, Shanghai, Guangzhou, Chengdu, and Seoul). On the contrary, the concentrations of NO2 and PM10 were lower than the values in these big cities.
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