Carcinogenesis, Teratogenesis & Mutagenesis ›› 2003, Vol. 15 ›› Issue (1): 43-45.doi: 10.3969/j.issn.1004-616x.2003.01.012

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STUDY ON THE TSP CONTAMINNATIVE STATE AND THE MUTAGENICITY OF THE ORGANIC EXTRACTS IN XI'AN CITY

YU Yan, ZHANG Zhen-jun, ZHANG Jing-hua   

  1. Department of Environment Health, School of Public Health, College of Medical Science, Xi'an Jiaotong University, Xi'an 710061 , China
  • Received:2002-07-10 Revised:2002-09-16 Online:2003-01-30 Published:2003-01-30
  • Contact: YU Yan

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Abstract: Purpose: To study the concentration of total suspended particulates (TSP) and the mutagenicity of the organic extracts in heating and unheating seasons in Xi'an City. Methods: Based on the distribution of the city functional district, four surveillance spots (industry zone, mixed zone, heavy traffic zone and control zone)were chosen by the method of grid. The concentration of TSP and mutagenicity of the organic extracts were investigated in 96 TSP samples obtained from two seasons by means of increasing weight and Ames test, respectively. Results: In heating and unheating seasons, the TSP concentration was 0.586 5 mg / m 3 and 0.353 5 mg / m 3, respectively. The difference was highly significant(P<0.05), and the TPS concentrations in two seasons were also significantly higher than the control group(P<0.05). The positive mutagenicity of organic extracts was tested in all functional sampling spots, and the positive rate in heating period was significantly higher than unheating season(P<0.05), but there was no difference among the same season samples (P>0.05). Conclusion: There was an obvious relationship between the TSP concentration and the season, and the TSP level was the highest in the heating season. The coal consumption was probably one of the main reasons of enhancing the mutagenicity of TSP in Xi'an City.

Key words: Total suspended particulates, Extract, Mutagenicity