Abstract：This study revealed distribution characteristics and impact factors of TSP through backward trajectory and other analysis methods based on TSP samples collected by large flow sampler in November 2002 to August 2009 in Waliguan Mountain. TSP mass concentration of mean annual was 0.076mg/m2 and there was a downward trend in 2003 to 2008. TSP mass concentration increased from early autumn and reached the maximum in April and decreased from May to August and reached the minimum in September. Mean annual exceeded environmental air quality level 1 standard of National Standard. TSP mass concentration was in order of sping,winter,autumn,summer. Average TSP mass concentration of four seasons respectively was 0.148, 0.091, 0.037 and 0.035 mg/m2. Rainfall, temperature,relative humidity,pressure and wind effected on TSP mass concentration. TSP mass concentration was higher if the rainfall, temperature, relative humidity and wind speed was smaller. The average TSP mass concentration of background value, the gale weather, the floating dust weather, the sand-blowing weather and the sandstorm were 0.12,0.22,0.329,0.382 and 0.874mg/m3 in spring, respectively. The average TSP mass concentration of the gale weather, the floating dust weather, the sand-blowing weather and the sandstorm were 1.8,2.7,3.2 and 7.3 times of background value. The elimination efficiency of rain and snow were 33.9% and 26.7%. The sand sources of sandstorm in area of Waliguan Mountain was from Northern Xinjiang, northwestern Gansu, Midwest Area of Inner Mongolia and the Qaidam Basin through backward trajectory model analyzing. It represented global continental scales environment that TSP mass concentration was lower than cities and regional background stations, frequent wind and rich sand were main factors caused TSP massconcentration higher in winter.
祁栋林, 李晓东, 蔡永祥, 肖宏斌, 王, 力, 黄建青, 李德林, 王剑琼, 刘鹏. [J]. 中国环境科学, 2012, 32(12): 2174-2183.
QI Dong-Lin, LI Xiao-Dong, CAI Yong-Xiang, XIAO Hong-Bin, WANG , LI , HUANG Jian-Qing, LI De-Lin, WANG Jian-Qiong, LIU Peng. Study on distribution characteristics and impact factors of TSP in Qinghai-Tibet Plateau. CHINA ENVIRONMENTAL SCIENCECE, 2012, 32(12): 2174-2183.
