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qzhaoxia

Í­³æ (СÓÐÃûÆø)

[½»Á÷] ¡¾Çë½Ì¡¿zeta potential²âÁ¿ ÒÑÓÐ3È˲ÎÓë

The zeta potential of my sample should be around zero(the surface of my sample is supposed to be neutral or slightly positively charged), however, the measurement result I got is about -30mV, which is too much off. I repeated the measurement, but the result was similar. Since I'm not so experienced in measuring zeta potential, does anyone can do me a favor by providing possible explanations? Thanks very much!
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charley86577

ÖÁ×ðľ³æ (Ö°Òµ×÷¼Ò)

qzhaoxia(½ð±Ò+1):Thanks very much! 2010-10-05 05:05:22
why do you think that the zeta potential of your sample should be zero?

The zeta potential have strong relationship with the pH of the solution.
keepeyesontheclouds,keepfeetfirmlyontheground
2Â¥2010-10-02 20:27:08
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liudb

ľ³æ (ÖøÃûдÊÖ)

qzhaoxia(½ð±Ò+1):Thanks very much! 2010-10-05 05:05:39
The 2ed flour is riight, zeta potentials are highly dependant on the pH value of solution in whiich your materials are dispersed.
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3Â¥2010-10-02 23:15:18
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markyhoo

½ð³æ (СÓÐÃûÆø)

qzhaoxia(½ð±Ò+1):Thanks! 2010-10-05 05:05:49
Please measure it in a definite pH value and ionic strength
4Â¥2010-10-03 00:43:49
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keven7928

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2Â¥: Originally posted by charley86577 at 2010-10-02 20:27:08:
why do you think that the zeta potential of your sample should be zero?

The zeta potential have strong relationship with the pH of the solution.

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5Â¥2011-09-12 15:26:29
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houhonghao

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6Â¥: Originally posted by houhonghao at 2013-06-19 15:07:10
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