at the retention time vs in the retention time

Both "at the retention time" and "in the retention time" are not commonly used phrases in English. The correct preposition to use with "retention time" depends on the context in which it is being used.

Last updated: March 30, 2024

at the retention time

This phrase is not commonly used in English.

The preposition "at" is not typically used with "retention time." Instead, consider using "at the time of retention" or "at the time of analysis."

Show examples from the web [+]

The analyte shall elute at the retention time that is typical for the corresponding calibration standard under the same experimental conditions.
The chromatogram should not show a peak at the retention time of the GMPA peak.
The retention time (or relative retention time) of the analyte in the test portion shall match that of the calibration standard within a specified retention time window.
The retention time of lactose is ca. 11 min.
Under the conditions described the retention time of vanillin is about 9 minutes.
The retention times are determined, preferably on a recording integrator linked to the detection system.
The retention time is determined in duplicate.
the retention time for betulin should be approximately 24 minutes.
The retention time window shall be commensurate with the resolving power of the chromatographic system.
The standard deviation for the retention time of the GMP peak should be smaller than 0,1 minutes (n = 10).
The comparison of the retention times is used for the identification of the different compounds.
Identify the peaks from the retention times by comparing them with mixtures of waxes with known retention times, analysed under the same conditions.
In any case, the minimum acceptable retention time for the analyte under examination is twice the retention time corresponding to the void volume of the column.
If the retention time of sample is outside the range of retention times obtained for the standards, a limit value should be quoted.
Identify the peaks by their retention times.
The retention time is usually 2 to 10 days and the temperature between 5 and 20 ºC.
Note 1. The retention time of the CMPA should be 26 ± 2 minutes.
The extract must always be diluted with the mobile phase, because otherwise the retention time of the amprolium peak may shift significantly, due to changes in the ionic strength.
The retention times for ß-sitosterol, for SE-52 and SE-54 columns, are shown in Table 1.
We need to define the scope, the retention times, to have a high level of data protection and the possibility of redress for the individual.

Alternatives:

at the time of retention
at the time of analysis

in the retention time

This phrase is not commonly used in English.

The preposition "in" is not commonly used with "retention time." Instead, consider using "during the retention time" or "within the retention time."

Show examples from the web [+]

Operation of the column at room temperature is possible, provided that the room temperature does not fluctuate more than 1 ºC, otherwise too much variation in the retention time of GMPÅ takes place.
Carrier gas: hydrogen or helium, set at a linear velocity sufficient to obtain the resolution reflected in Figure 1. The retention time of the C54 triglyceride must be 40 ± 5 minutes (see Figure 2).
The retention time (or relative retention time) of the analyte in the test portion shall match that of the calibration standard within a specified retention time window.
The retention time of lactose is ca. 11 min.
Under the conditions described the retention time of vanillin is about 9 minutes.
The retention times are determined, preferably on a recording integrator linked to the detection system.
The retention time is determined in duplicate.
the retention time for betulin should be approximately 24 minutes.
The analyte shall elute at the retention time that is typical for the corresponding calibration standard under the same experimental conditions.
The retention time window shall be commensurate with the resolving power of the chromatographic system.
The standard deviation for the retention time of the GMP peak should be smaller than 0,1 minutes (n = 10).
The comparison of the retention times is used for the identification of the different compounds.
Identify the peaks from the retention times by comparing them with mixtures of waxes with known retention times, analysed under the same conditions.
In any case, the minimum acceptable retention time for the analyte under examination is twice the retention time corresponding to the void volume of the column.
If the retention time of sample is outside the range of retention times obtained for the standards, a limit value should be quoted.
Identify the peaks by their retention times.
The retention time is usually 2 to 10 days and the temperature between 5 and 20 ºC.
Note 1. The retention time of the CMPA should be 26 ± 2 minutes.
The extract must always be diluted with the mobile phase, because otherwise the retention time of the amprolium peak may shift significantly, due to changes in the ionic strength.
The retention times for ß-sitosterol, for SE-52 and SE-54 columns, are shown in Table 1.

Alternatives:

during the retention time
within the retention time

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at the retention time vs in the retention time