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  3. Chemistry; Chem Sci/Eng

duration

English translation: period

18:53 Aug 31, 2005
English language (monolingual) [PRO]
Medical - Chemistry; Chem Sci/Eng
English term or phrase: duration
Context: According to the above-mentioned method, the sample was injected and the duration 4 times the retention time to the major peak in the chromatogram was recorded

Question: The "duration" does not sound good. Can somebody help give a bettter expression?

TIA!!!
Jianming Sun
Local time: 03:01
Selected answer:period
Explanation:
Period is one possible alternative. But it should be a duration or a period, not the.
Selected response from:

Jack Doughty
United Kingdom
Local time: 20:01
Grading comment
Thank you all for kind help!
4 KudoZ points were awarded for this answer



SUMMARY OF ALL EXPLANATIONS PROVIDED
4 +4period
Jack Doughty
4 +1period
ooooo (X)
4 +1data/results were recorded for a duration...
Ken Cox
2lasts
lyneRJ
2chromatogram
Nik-On/Off


  

Answers


10 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +4
period


Explanation:
Period is one possible alternative. But it should be a duration or a period, not the.

Jack Doughty
United Kingdom
Local time: 20:01
Native speaker of: English
PRO pts in category: 60
Grading comment
Thank you all for kind help!

Peer comments on this answer (and responses from the answerer)
agree  ooooo (X): G'day Jack, looks like we came up the same time....Cheers, mate!
3 mins
  -> Thank you.
agree  Enza Longo: I would stay with duration, but as you said, "a" duration
18 mins
  -> Thank you.
agree  RHELLER: for a period of four times the retention time
3 hrs
  -> Thank you.
agree  Alfa Trans (X)
1 day 22 hrs
  -> Thank you.
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13 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
period


Explanation:
How about 'period'?

ooooo (X)
Specializes in field
Native speaker of: Native in PortuguesePortuguese, Native in EnglishEnglish
PRO pts in category: 2

Peer comments on this answer (and responses from the answerer)
agree  Jack Doughty
4 mins
  -> Tkanks Jack...
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40 mins   confidence: Answerer confidence 2/5Answerer confidence 2/5
lasts


Explanation:
using a verb instead of a noum "lasts 4 times "

lyneRJ
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39 mins   confidence: Answerer confidence 2/5Answerer confidence 2/5
chromatogram


Explanation:
I believe that it is the chromatogram that should be recorded for four times the retention time of the major peak

--------------------------------------------------
Note added at 46 mins (2005-08-31 19:39:30 GMT)
--------------------------------------------------

My conclusion is based in particular on the following:

Gas chromatography is the physical separation of two or more compounds based on their differential distribution between two phases, the mobile phase and stationary phase. The mobile phase is a carrier gas that moves a vaporized sample through a column coated with a stationary phase where separation takes place. When a separated sample component elutes from the column, A detector converts the column eluent to an electrical signal that is measured and recorded. The signal is recorded as a peak in the chromatogram plot.
Chromatograph peaks can be identified from their corresponding retention times. The retention time is measured from the time of sample injection to the time of the peak maximum, and is unaffected by the presence of other sample components. The height of the peak relates to the concentration of a component in the sample mixture.
http://www.mtholyoke.edu/courses/sdecatur/GCMS/intro.html

Nik-On/Off
Ukraine
Local time: 22:01
Native speaker of: Native in RussianRussian, Native in UkrainianUkrainian
PRO pts in category: 4
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43 mins   confidence: Answerer confidence 4/5Answerer confidence 4/5 peer agreement (net): +1
data/results were recorded for a duration...


Explanation:
A duration is how long something happens or takes, and you wouldn't normally say that you record a duration. Also, 'according to xxx' in your construction means 'xxx says/specifies...', which isn't what you mean.

I'd suggest 'Using the above-mentioned method [or: the method described above], the sample was injected and the results were recorded for a duration of four times the interval until the first peak.'

--------------------------------------------------
Note added at 47 mins (2005-08-31 19:40:49 GMT)
--------------------------------------------------

Sorry, that should be 'four times the retention time of the major peak'

Ken Cox
Local time: 21:01
Native speaker of: Native in EnglishEnglish
PRO pts in category: 28

Peer comments on this answer (and responses from the answerer)
agree  Drunya
39 mins
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