Notice of RetractionAmbient Total Suspended Particulates at a Traffic Junction in Guangzhou, China

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

The main goal of this investigation is to evaluate the concentrations of total suspended particulates (TSP) at a traffic junction from September 2005 to February 2006 in Guangzhou, China. Results showed that the 6-month average concentration of TSP varied from 65.4 to 461.5 μg/m³, with a mean value of 260.1 μg/m³, which exceeded the limit of 200 μg/m³ for National Ambient Air Quality Standard, China and TSP levels reported at other sites around the world. According to multiple comparisons data, the monthly average concentration (105.5-475.8 μg/m³) in February was significantly higher than that in other months. In addition, TSP concentration with an average of 283.0 μg/m³ in daytime was higher than 237.2 μg/m³ in nighttime, but no significant difference was observed. TSP concentration was negatively related to wind speed, relative humidity and urban heat island intensity, especially to wind speed. Therefore, the TSP exposure has become a particularly significant public health problem and environmental damage in Guangzhou, China.