THE air quality in Shenzhen ranked 7th in China for the first half of the year, with 84 days of excellent and good air quality in the second quarter, according to monitoring results released by Shenzhen's environmental authority, the Shenzhen Special Zone Daily reported.
The percentage of days meeting the standard in the second quarter reached 92.3 percent, 6.6 percent lower than during the same period last year. There were 59 days with excellent air quality, a five-day decrease compared to the same period last year, and 25 days with good air quality, a one-day decrease compared to the same period last year.
The average concentration of sulfur dioxide and nitrogen dioxide has decreased, while the concentration of PM2.5, fine particles with a diameter smaller than 2.5 microns, PM10 and ozone has increased. Additionally, although the frequency of acid rain has declined by 18.7 percent, acid rain pollution has worsened.
According to the spokesman of the city's environmental authority, the air quality in Shenzhen in June ranked 4th and 7th in the first half of the year among 74 major cities in China.
The quality of drinking water sources reached 100 percent in the second quarter, which was the same as last year at the same time. The water quality of all reservoirs in the city remains stable.
The water quality of the Buji River has improved significantly, while that of Xixiang River and Dasha River saw slight improvements.
In the second quarter, 458 cases involving illegal environmental pollution were dealt with, 16 percent higher compared with the same period last year, with fines totaling 35.6 million yuan (US$5.29 million) being issued, a 29-percent increase compared with that of last year.
Among the cases handled, 21 were transferred as cases for administrative detention, and eight were transferred as cases of criminal environmental pollution, the authority said.
During the environmental inspection conducted in the second quarter, the authority made a thorough inspection of key areas such as the Maozhou River, Longgang River and Pingshan River. A serious investigation has been launched into unlawful acts by the electroplating and printed circuit board enterprises.