Significance of Retention time
Retention time, across Ayurveda, Science, and Health Sciences, generally signifies the duration a substance takes to pass through a chromatographic system. In Ayurveda, it refers to the time materials are retained in the body. Science defines it as the time a compound elutes from a column, aiding in identification and quantification. Health Sciences expands on this, detailing the time a compound spends in the chromatographic system, used for identifying and quantifying substances, and assessing chromatographic performance. This measure is specific to each compound and is crucial in analytical processes like HPLC and GC-MS.
Synonyms: Storage time, Retention period, Duration, Persistence, Holding period, Lag time, Dwell time, Residence time
The below excerpts are indicatory and do represent direct quotations or translations. It is your responsibility to fact check each reference.
Hindu concept of 'Retention time'
In Hinduism, retention time can be interpreted as a measure of duration. It refers to the time a substance remains in a system, like the body during Basti, or a component's presence in analytical processes, similar to how Tarpana is measured based on Dosha and Adhistana.
From: Journal of Ayurveda and Integrated Medical Sciences
(1) The specific duration required for a particular chemical compound to travel through the chromatographic column, which is used along with peak height to measure relative concentration and aid in identification.[1] (2) This is the amount of time the offspring were able to stay on the rotating rod during the rota rod test, measuring their muscle strength and coordination.[2] (3) This is the time it takes for a compound to elute from the GC column.[3] (4) This is the duration for which the Basti material is retained in the body, and the study notes the average retention time for both Niruha and Anuvasana Basti.[4] (5) This of Tarpana has also been mentioned in classics on the basis of Dosha and Adhistana like 1000 Matrakala in Vataja Netra Roga, and other specific durations.[5]
From: International Research Journal of Ayurveda and Yoga
(1) This refers to the duration for which the Basti is retained, varying from minutes to hours.[6]
From: Journal of Ayurvedic and Herbal Medicine
(1) This refers to the time it takes for a compound to pass through the HPLC column, with stable signals at a retention time of 12.2 min for EGCG and 17.767 min for EC.[7] (2) This is a characteristic measurement of each compound's behavior during the GC-MS analysis, helping in their identification by comparing it with established data.[8] (3) Retention time is the time it takes for a compound to elute from the GC column, which is used to identify and quantify the different compounds present in the sample.[9]
The concept of Retention time in scientific sources
Retention time is the duration a compound spends within a chromatography system, specifically from injection to detection. It's a crucial parameter for identifying and quantifying substances, reflecting their interaction with the stationary phase. The time varies depending on the compound and the chromatographic conditions.
From: International Journal of Pharmacology
(1) These for prednisone, prednisolone and IS were 8.7, 11.3 and 16.2 min, respectively.[10] (2) The retention times for ethanol and IS were 1.03 and 1.29 min, respectively in the experiment.[11] (3) A measurement compared with known standards to identify phenolic compounds.[12]
From: Asian Journal of Pharmaceutics
(1) The peak area of each of these chromatograms was noted at their retention time and finally the mean peak area was calculated.[13] (2) An optimized chromatographic condition, the time for Eplerenone is 2.159±0.02 min and Umifenovir is 2.651±0.02 min.[14] (3) The time it takes for a specific analyte to pass through the column and reach the detector; Fluorometholone's was 5.158 min.[15]
From: Onderstepoort Journal of Veterinary Research
(1) The time it takes for a compound to elute from a chromatographic column, used to identify and quantify specific compounds in a sample.[16] (2) These are the specific times at which the oxalate compounds eluted from the HPLC column, used to identify the oxalate peaks in the samples.[17]
From: South African Journal of HIV Medicine
(1) Retention times refer to the specific time it takes for a particular substance to elute from the chromatographic column during liquid chromatography, which is a crucial part of the process.[18]
From: Journal of Medicinal Plants for Economic Development
(1) This is the time it takes for a compound to pass through the GC-MS column, and it is used to identify and quantify the various compounds.[19] (2) This is the time it takes for a compound to pass through a chromatography column, used to identify and characterize compounds in D. filix-mas (DF), as indicated in the tables and figures within the text.[20] (3) This refers to the time it takes for a compound to pass through a chromatography column, which is used for identification, as mentioned in the text.[21]
From: International Journal of Environmental Research and Public Health (MDPI)
(1) The characteristic time it takes for a compound to elute from a chromatographic column.[22] (2) A fixed duration of 1.530 minutes under the specified chromatographic conditions, which is characteristic for the target antibiotic compound as it passes through the separation column.[23] (3) The duration for which the sludge is held within the treatment environment at elevated temperatures, a crucial parameter used in conjunction with temperature to predict microbial kill rates.[24]
From: Sustainability Journal (MDPI)
(1) Retention time is a parameter measured in chromatography, indicating the time it takes for a compound to pass through the system, and it aids in distinguishing between different anthocyanins like cyanidin-3- O -galactoside and cyanidin-3- O -glucoside.[25] (2) Retention times were used to identify procymidone and its degradation products; procymidone had a retention time of 7.76 min, while M 1, M 2, and M 3 had retention times around 5.50, 5.89, and 5.84 min, respectively.[26] (3) Retention time is the time it takes for a specific analyte to pass through the chromatographic column and reach the detector, serving as one of the key parameters for analyte identification.[27]
From: International Journal of Pharmacology
(1) Retention times are specific values measured during HPLC analysis that indicate how long a particular compound remains on the chromatographic column, aiding in its identification.[28] (2) The retention times for Tacrolimus and olanzapine were determined to be 1.2 and 1.0 minutes, respectively, during the HPLC analysis.[29] (3) These are characteristic times for compounds to elute from the HPLC column, used for identification.[30]