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6Â¥: Originally posted by sally208 at 2011-08-19 19:34:39:
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7Â¥2011-08-19 21:51:16
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yingli09(½ð±Ò+1): ллӦÖú£¡ 2011-08-15 15:30:15
yingli09: ÔÙ´Îллר¼ÒµÄÖ§³Ö£¡ 2011-08-15 15:30:36
liyanhua123(½ð±Ò+2): лл°¡£¬ÎÒÒ²ÀëÐÄÁË£¬µ«ÊÇÛÏ»ùʮһËá¿ÉÒÔÐγɰ×É«µÄÐõ×´ÎïÖÊ£¬¸ú׎ðÀëÐÄÏÂÀ´Ñ½£¬Ôõô°ìÄØ 2011-08-16 10:13:14
Centrifugation is the common way to purify Au/Ag nanoparticles.
2Â¥2011-08-15 15:16:37
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½ð¹âÉÁÉÁ2010(½ð±Ò+1): should have a try 2011-08-16 14:34:19
liyanhua123(½ð±Ò+3): ÎÒÓõÄ10000rpm,ÛÏ»ùʮһËá¶¼±ä³ÉÐõ×´³Áµí£¬ÀëÏÂÀ´ÁË¡£ÈôתËٵͣ¬½ð²»ÄÜÍêÈ«ÀëÏÂÀ´Ñ½¡£ 2011-08-17 09:11:45
How about using a lower rpm? Au nanoparticles are much heavier than ÛÏ»ùʮһËá...
3Â¥2011-08-16 14:22:04
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½ð¹âÉÁÉÁ2010(½ð±Ò+1): 2011-08-17 21:42:09
Then centrifuge at the low rpm for a longer time ...   

what is the size of your gold nanoparticles? -Unless they are extrememly small (less than 10 nm), centrifugation always works.

If the centrifugation really does not work in your case, you can also try dialysis against water to remove small molecules.
4Â¥2011-08-17 14:20:28
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