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Categories >> Sciences >> Chemistry >> Analytical Chemistry


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wt is rsd in and explain
 Question Submitted By :: M.dinesh
I also faced this Question!!     Rank Answer Posted By  
  Re: wt is rsd in and explain
# 1
RSD means Relative standard deviation. If we inject same
sample 5 injections the deviation b/w these area or RT is
called as RSD

RSD = Standard deviation *100/mean(area or RT)
Is This Answer Correct ?    43 Yes 3 No
  Re: wt is rsd in and explain
# 2
RSD = Standard Deviation/ Average * 100

Average is '(same sample is analyzed for 5 times with the
same conditions of instrument)the average of results.

RSD used to Know the precision. If the RSD is less than 3%,
That is precision is good.
Is This Answer Correct ?    1 Yes 1 No
  Re: wt is rsd in and explain
# 3
Relative Standard Deviation.
RSD= S.D*100/ Mean.

In short This is to Explain the UNCERTANITY in your Analytical Result. We don't Know the true Value.

Uncertanity can be Quantified in different ways.

I Know the following
1.Significant figures method
2.Error propagation Method and
3. Statistical Method
Is This Answer Correct ?    0 Yes 0 No
Rama Rao Kethineni

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