The use of NMR in quantitative determination of oil and water in emulsions
Nuclear magnetic resonance techniques have been used to determine quantitatively the amount of water and oil in several oil/water emulsions. The technique utilizes the inversion recovery pulse (IR) sequence to produce and measure the amplitude of the spin echoes at non-linearly spaced time intervals...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Universiti Pertanian Malaysia Press
1994
|
| Online Access: | http://psasir.upm.edu.my/id/eprint/3175/ http://psasir.upm.edu.my/id/eprint/3175/1/The_Use_ofNMR%27m_Quantitative_Determination.pdf |
| _version_ | 1848839457291108352 |
|---|---|
| author | Harun, Salleh |
| author_facet | Harun, Salleh |
| author_sort | Harun, Salleh |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Nuclear magnetic resonance techniques have been used to determine quantitatively the amount of water and oil in several oil/water emulsions. The technique utilizes the inversion recovery pulse (IR) sequence to produce and measure the amplitude of the spin echoes at non-linearly spaced time intervals. In this study, the temperature and the operating frequency were 24.5°C and 2.5MHz respectively. The quantity of each. component was determined by fitting the data to non-linear models consisting of either one or two exponentials. For n-hexadecane/water and paraffin oil/water, the relaxation behaviour conforms to the two-state non-exchange model. The amount of each constituent could be estimated fairly accurately from the signal amplitudes. Olive oil emulsion, however, appears to be more complex. The difference between signal amplitude ratio and that obtained by weighing is discussed. |
| first_indexed | 2025-11-15T07:11:45Z |
| format | Article |
| id | upm-3175 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T07:11:45Z |
| publishDate | 1994 |
| publisher | Universiti Pertanian Malaysia Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-31752019-10-21T02:31:48Z http://psasir.upm.edu.my/id/eprint/3175/ The use of NMR in quantitative determination of oil and water in emulsions Harun, Salleh Nuclear magnetic resonance techniques have been used to determine quantitatively the amount of water and oil in several oil/water emulsions. The technique utilizes the inversion recovery pulse (IR) sequence to produce and measure the amplitude of the spin echoes at non-linearly spaced time intervals. In this study, the temperature and the operating frequency were 24.5°C and 2.5MHz respectively. The quantity of each. component was determined by fitting the data to non-linear models consisting of either one or two exponentials. For n-hexadecane/water and paraffin oil/water, the relaxation behaviour conforms to the two-state non-exchange model. The amount of each constituent could be estimated fairly accurately from the signal amplitudes. Olive oil emulsion, however, appears to be more complex. The difference between signal amplitude ratio and that obtained by weighing is discussed. Universiti Pertanian Malaysia Press 1994 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/3175/1/The_Use_ofNMR%27m_Quantitative_Determination.pdf Harun, Salleh (1994) The use of NMR in quantitative determination of oil and water in emulsions. Pertanika Journal of Science & Technology, 2 (2). pp. 189-196. ISSN 0128-7680 |
| spellingShingle | Harun, Salleh The use of NMR in quantitative determination of oil and water in emulsions |
| title | The use of NMR in quantitative determination of oil and water in emulsions |
| title_full | The use of NMR in quantitative determination of oil and water in emulsions |
| title_fullStr | The use of NMR in quantitative determination of oil and water in emulsions |
| title_full_unstemmed | The use of NMR in quantitative determination of oil and water in emulsions |
| title_short | The use of NMR in quantitative determination of oil and water in emulsions |
| title_sort | use of nmr in quantitative determination of oil and water in emulsions |
| url | http://psasir.upm.edu.my/id/eprint/3175/ http://psasir.upm.edu.my/id/eprint/3175/1/The_Use_ofNMR%27m_Quantitative_Determination.pdf |