| Weather and Climate |
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| Spatiotemporal Distribution and Inorganic Ion Concentration of Total Suspended Particles in Tarim Basin in 2009 |
| ZHONG Yu-ting1,2, LIU Xin-chun1,2, FAN Zi-ang1,2, HE Qing1,2 |
1.Institute of Desert Meteorology, China Meteorological Administration, Urumqi 830002, China;
2.Key Laboratory of Tree-ring Physical and Chemical Research of China Meteorological Administration/ Xinjiang Key Laboratory of Tree Ring Ecology, Urumqi 830002, China |
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Abstract The spatial and temporal distribution of TSP and its inorganic ion concentration in the Tarim Basin were analyzed based on observation data of total suspended particle (TSP) in four typical observation stations in 2009, and analysis of water-soluble inorganic ions in TSP. Some results are obtained as follows: (1) The variation trends of monthly average TSP concentration in the four regions are almost the same, with peak values in April and May and with valley values in November and December. Its seasonal variation shows the highest value in spring, followed by summer, autumn, and winter in order. (2) The annual average concentration of total water-soluble inorganic ions in TSP in these four regions follows an order of that in Tazhong>in Tikanlik>in Minfeng>in Kashgar. In detail, the SO2-4 concentrations are 58%, 50%, 54% and 51%; the Ca2+ concentrations are 13%, 16%, 16% and 11%; the Na+ concentrations are 12%, 13%, 10% and 12%; and the Cl- concentrations are 12%, 16%, 11% and 22% of total ion concentration, respectively. Therefore, sulfate, calcium, sodium and chloride ions are the main inorganic components of TSP in the Tarim Basin; (3) The correlation coefficients between anions and cations in Tikanlik, Minfeng, Kashgar and Tazhong are 0.99, 0.99, 0.25 and 0.91, respectively; the average concentrations of anions are 2.57, 2.12, 2.15 and 3.02 times of cations, indicating that anions and cations are unbalanced in the observation stations. (4) The SO2-4/NO-3 ratios in the observation stations are much larger than the SO2-4/NO-3 ratio of coal-fired emission, so the impact of fixed emission sources is far severe than the mobile emission sources in the study regions.
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Received: 21 October 2011
Published: 22 February 2012
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2012, Vol. 32 
