Quantitative analysis of methanol, an adulterant in alcoholic beverages, using attenuated total reflectance spectroscopy
IR@NPL: CSIR-National Physical Laboratory, New Delhi
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| Title |
Quantitative analysis of methanol, an adulterant in alcoholic beverages, using attenuated total reflectance spectroscopy
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| Creator |
Nagarajan, R.
Mehrotra, R. Bajaj, M. M. |
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| Subject |
Engineering
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| Description |
quantify methanol, a spurious adulterant in alcoholic beverages, attenuated total reflectance (ATR) technique is used. Synthetic samples (100) are prepared for developing a suitable calibration model. Spectra are recorded for all samples in wavelength region 4000-600 cm(-1) using Bio-Rad 175 C FTS spectrophotometer in ATR mode. Calibration equation is obtained using partial least squares (PLS) method. Correlation coefficient and root mean square error values for methanol are R-cal(2): 0.9860, R-val(2): 0.9839 and RMSEC: 0.0470, RMSEV: 0.0505. Spectral measurement is done for 10 samples and their methanol concentration (0.5-2.5%) is predicted using the developed calibration model. The reliability and repeatability of spectroscopic technique may be appreciated by the agreement between ATR predicted results to those of actual values.
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| Publisher |
NISCAIR
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| Date |
2006-05
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://npl.csircentral.net/2536/1/128.pdf
Nagarajan, R. and Mehrotra, R. and Bajaj, M. M. (2006) Quantitative analysis of methanol, an adulterant in alcoholic beverages, using attenuated total reflectance spectroscopy. Journal of Scientific and Industrial Research, 65 (5). pp. 416-419. ISSN 0022-4456 |
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| Relation |
http://npl.csircentral.net/2536/
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