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is there any exact definition for Theoritical plates ?
chennu srinivas
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Answer / priyanka.r
A Theoretical plate is an imaginary/hypothetical line/unit
of a column where the distribution of solute between
stationary phase and mobile phase should attained equilibrium.
theoretical plates is considered as the functional unit of
the column.
if more the no.of theoretical plates, the column is said to
be highly efficient.
| Is This Answer Correct ? | 9 Yes | 1 No |
Answer / chennusrinivas
Def is : No of active sites on stationary phase
| Is This Answer Correct ? | 1 Yes | 0 No |
Answer / hussain
I think nothing exact.but we conclude it as the efficiency of column
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Answer / mahesh.duggirala
if u don't know about the column..
i mean if u take new column....
it must & should it have 3500*L/d no of theoritical plates
where L=Length of the column(in Cm)
D=Diameter of partical
Example:if u hAve 150mm length with 3µm partical size column
then 3500*15/3=17500
that column must & should have 17500 theoritical plates
| Is This Answer Correct ? | 0 Yes | 4 No |
Theretical plates means the rate of absorbance is equal to
rate of disorption . accepatance cretiera nlt 2500 as per usp.
formula: TR2-TR1/ O.5*TW1-TW2.
TR2= RT OF FIRST PEAK, TR1= RT OF SECOND PEAK,
TW1= PEAK WIDTH OF FIRST PEAK, TW2= PEAK WIDTH OF SECOND PEAK
AS PER USP THIS FORMULA
| Is This Answer Correct ? | 1 Yes | 6 No |
My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards
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