Batch Equilibration „(BE…)

Spanish translation: equilibrio en sistema cerrado

English term or phrase:batch equilibration
Spanish translation:equilibrio en sistema cerrado
Entered by: ks so

00:36 Aug 11, 2015
English to Spanish translations [PRO]
Science - Biology (-tech,-chem,micro-) / biochemistry
English term or phrase: Batch Equilibration „(BE…)
De antemano gracias.

11. Experimental Methods for the
Determination of Sorption Coefficients
11.1. Batch Equilibration „(BE…)
A known weight of sorbent ~soil or sediment! is placed in
a vial with a measured volume of solution containing a
known concentration of the solute in water ~distilled or containing
known concentration of an electrolyte, NaCl, CaCl2,
etc., to simulate the ionic strength of soil solution and to
improve phase separation!. A minimum of headspace is left
to avoid losses of solute in vapor phase. The vial is shaken
for a time suitable to reach equilibrium, then is centrifuged
and both phases are separated and analyzed to determine the
concentration of the solute. The mass of sorbate per unit
mass of sorbent may be obtained also by difference between
the initial concentration of solute and the concentration after
equilibrium has been reached. The first procedure seems
more reliable because it takes into account the possibility of
loss of solute by volatilization, degradation or by other processes
causing disappearence or nonrecovery of the solute
from the measurement system.528 No differences were found
between the two procedures with napropamide and lindane
sorption by soil.529 The Kd or Kf value are calculated using
Eqs. ~3! and ~4!. Often labeled ~14C or 3H! compounds are
used and their concentration is measured by liquid scintillation
counting. However, much care is necessary in using
radio-labeled compounds, especially when sorption coefficients
are extremely high. Their purity should be checked
accurately before use to avoid errors in measurement of the
aqueous concentration after sorption. This can be termed the
‘‘standard batch’’ method.
ks so
Local time: 03:23
equilabrado de lotes
Los lotes se estan poniendo en su punto de equilibrio...
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Neil Ashby
Local time: 09:23
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3equilabrado de lotes
Neil Ashby



7 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5
batch equilibration „(be…)
equilabrado de lotes

Los lotes se estan poniendo en su punto de equilibrio...

Neil Ashby
Local time: 09:23
Works in field
Native speaker of: Native in EnglishEnglish
PRO pts in category: 19
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