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| THE DYNAMIC ACCUMULATION SAMPLING TECHNIQUE IN THE MEASUREMENT OF NANO-SCALE PARTICLES |
| LIU Ying-han1,2, LIU Jing-qiu3, ZHANG Hua2, WANG Ming-qi4, KONG Mu2, ZHANG Qin2 |
1. Colllege of Resources and Environment China Agriculture University, Beijing 100094, China;
2. Institute of Geophysical and Geochemical Exploration, Langfang 065000, China;
3. North China Institute of Astronautic Engineering, Langfang 065000, China;
4. China University of Geosciences, Beijing 100083, China |
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Abstract Sampling procedure is a key to get a reliable observation in the application of nano-scale particle survey to mineral exploration in overburden areas.An effective sampling device and an appropriate sampling amount constitute the major controlling factors for successful accumulation of nano-scale particles. Liquid collectors and dynamic sampling were tested to select the sampling device, layout and sampling time. The results show that the man-powered sampling device can produce much better response than the battery-driven sampler and that, to get satisfactory anomalies, we should totally collect more than 9 liters of pumping gases at each sampling site. It can be concluded that the materials the authors collected are nano-scale particles rather than real gases, and that greater power is needed to release them from the soil.
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Received: 09 January 2006
Published: 24 February 2008
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ZHANG Xue-jun, SUN Bin-bin, CHENG Zhi-zhong, ZHOU Guo-hua. NATIONWIDE GEOCHEMICAL SURVEY OF MINE TAILINGS:DEMANDS AND IDEAS[J]. Geophysical and Geochemical Exploration, 2011, 35(6): 715-717,726. |
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