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chemkw

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[ÇóÖú] Particle, AggregateÓëAgglomerateÃû´Ê½âÊÍ£¬Çó·­Òë

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a) ¡°Particle¡± means a minute piece of matter with defined physical boundaries,  
b) "Aggregate" means a particle comprising of strongly bound or fused particles,  
c)  "Agglomerate"  means  a  collection  of  weakly  bound  particles  or  aggregates  where  the  resulting  external surface area is similar to the sum of the surface areas of the individual components.
¡°Substance  at  nanoscale¡±:  substance  as  defined  in  article  3  of  EC  regulation  no.  1907/2006,  intentionally produced at nanometric scale, containing particles, in an unbound state or as an aggregate or as an agglomerate and where,  for  a  minimum  proportion  of  particles  in  the  number  size  distribution,  one  or  more  external dimensions is in the size range 1 nm - 100 nm.

[ Last edited by chemkw on 2013-1-17 at 11:24 ]
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qiliankanxue

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chemkw: ½ð±Ò+30, ¡ï¡ï¡ïºÜÓаïÖú 2013-01-19 20:58:31
a) ¡°Particle¡± means a minute piece of matter with defined physical boundaries,  
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b) "Aggregate" means a particle comprising of strongly bound or fused particles,  
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c)  "Agglomerate"  means  a  collection  of  weakly  bound  particles  or  aggregates  where  the  resulting  external surface area is similar to the sum of the surface areas of the individual components.
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qiliankanxue

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chemkw: ½ð±Ò+15, ¡ï¡ï¡ïºÜÓаïÖú 2013-01-19 20:58:37
¡°Substance  at  nanoscale¡±:  substance  as  defined  in  article  3  of  EC  regulation  no.  1907/2006,  intentionally produced at nanometric scale, containing particles, in an unbound state or as an aggregate or as an agglomerate and where,  for  a  minimum  proportion  of  particles  in  the  number  size  distribution,  one  or  more  external dimensions is in the size range 1 nm - 100 nm.

ÄÉÃ×¼¶µÄÎïÖÊ£º¸ù¾ÝNo. 1907/2006 µÄEC·¨¹æµÚ3ƪµÄ¶¨ÒåÖУ¬¿ÌÒâÔÚÄÉÃ×¼¶·¶Î§ÄÚËù²úÉúµÄÎïÖÊ£¬º¬ÓпÅÁ££¬µ«ÊÇ¿ÅÁ£Ã»Óб»Ô¼ÊøµÃ×é³É¾ÛºÏÎï»òÊÇÄý¾ÛÎÒÔ×îµÍ±ÈÂʵÄÁ£×Ó´óС·Ö²¼£¬ÔÚÍâÔÚµÄ1ά»òÊǶàά¿Õ¼äÖÐËüµÄ³ß´ç·¶Î§ÔÚ1ÄÉÃ×µ½100ÄÉÃ׼䡣
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chemkw

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by qiliankanxue at 2013-01-17 14:05:50
a) ¡°Particle¡± means a minute piece of matter with defined physical boundaries,  
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b) "Aggregate" means a particle comprising of strongly bound  ...

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qiliankanxue

Òø³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
4Â¥: Originally posted by chemkw at 2013-01-19 20:58:01
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chemkw

½ð³æ (СÓÐÃûÆø)

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5Â¥: Originally posted by qiliankanxue at 2013-01-20 19:14:34
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