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hygroscopic
(redirected from hygroscopicity)

   Also found in: Dictionary/thesaurus, Medical, Wikipedia 0.02 sec.
hygroscopic
(of a substance) tending to absorb water from the air

hygroscopic [¦hī·grə¦skäp·ik]
(botany)
Being sensitive to moisture, such as certain tissues.
(chemistry)
Possessing a marked ability to accelerate the condensation of water vapor; applied to condensation nuclei composed of salts which yield aqueous solutions of a very low equilibrium vapor pressure compared with that of pure water at the same temperature.
Pertaining to a substance whose physical characteristics are appreciably altered by effects of water vapor.
Pertaining to water absorbed by dry soil minerals from the atmosphere; the amounts depend on the physicochemical character of the surfaces, and increase with rising relative humidity.


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The combination of low pressure drop (permitting use of a low-power sampling pump), low hygroscopicity (minimizing bound water interference in mass measurements), and low trace element background (improving analytical sensitivity) of these filters makes them highly appropriate for personal particle sampling.
More recently, there have been new developments towards overcoming the problems of colorability and hygroscopicity (refs.
Maltitol's anhydrous crystalline form, low hygroscopicity, high melting point and stability finally allow world-class chocolatiers to use it to replace sucrose in high quality chocolate.
 
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