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From each top, middle and lower parts of the crystal, we cut out a small portion of crystal sample. Then placed each of them in an agate mortar and grinding into powder. With the balance millionth 0.05g powder sample is weighed out.  Powder was placed in a polytetrafluoroethylene beaker, added hydrofluoric acid and nitric acid solution each 5mL. After preheated hot plate for 20 minutes, the sample was carried out microwave digestion by using automatic microwave digestion oven.
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dailun20: ½ð±Ò+1, ÐÁ¿àÁË£¡ 2014-02-14 12:00:58
annahit: ½ð±Ò+35, ·­ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2014-02-14 18:12:09
From each top, middle and lower parts of the crystal, we cut out a small portion of crystal sample, then placing each of them in an agate mortar and grinding into powder. With the balance millionth 0.05g powder sample is weighed out.  Powder was placed in a polytetrafluoroethylene beaker, added hydrofluoric acid and nitric acid solution each 5mL. After preheated hot plate for 20 minutes, the sample was carried out microwave digestion by using automatic microwave digestion oven.
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