Abstract
Methanol is a toxic alcohol and can be encountered in clinical and forensic cases. Methanol toxicity is primarily related to its metabolic products-formaldehyde and formic acid, which can cause metabolic acidosis, blindness, CNS disorders, coma, or even death. Quantitative determination and elucidation of methanol levels is crucial in clinical and forensic toxicology. Gas chromatography-headspace (GC-HS) can be used to determine methanol concentration in various biological fluids. This study reports two cases of suspected methanol poisoning. Blood, urine, vitreous humor, and cerebrospinal fluid (CSF) samples were taken for toxicological analysis during post-mortem examination. The samples were run in GC-HS for analysis of ethanol and methanol. The analysis only required 1 ml of sample and the addition of internal standard (IS). Total runtime of analysis was achieved within 20 min. Methanol was successfully detected in blood, urine, vitreous humor, and CSF using GC-HS. GC-HS is efficient for the determination of methanol concentrations, owing to its high specificity, reliability sensitivity, and reproducibility. This study also emphasizes the collection and analysis of multiple specimens, including those that are more resistant to post-mortem changes, so that they can be tested in cases where a blood sample is not readily obtainable due to alterations, putrefaction, etc. The use of an alternative specimen to the blood is of great relevance for forensic purposes.
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References
Ashurst, J.V., Nappe, T.M.: Methanol toxicity (2018)
Ashurst, J.V., Nappe, T.M.: Methanol toxicity. StatPearls (Internet) (2021 Jan.)
Bodwal, J., Chauhan, M.S., Ghosh, M., Behera, C.: Hooch tragedies in India: a review. Anil Aggrawal’s Int. J. Forensic Med. Toxicol. 15(2), 1 (2014)
Bonchev, G.D., Zlateva, S.Z., Yovcheva, M.I.: Toxicological chemical analysis of methanol in blood of patients with acute ethanol intoxication for determining detectable quantities of methanol and analysis of the correlation between ingested alcohol. J. Biomed. Clin. Res. 9(1), 48–54 (2016)
Caplan, Y.H., Levine, B.: Vitreous humor in the evaluation of postmortem blood ethanol concentrations. J. Anal. Toxicol. 14(5), 305–307 (1990)
Ceelen, M., Dorn, T., Buster, M., Stomp, J., Zweipfenning, P., Das, K.: Post-mortem toxicological urine screening in cause of death determination. Hum. Exp. Toxicol. 30(9), 1165–1173 (2011)
Challenges and Trends in GC Headspace Analysis (Internet): Lab manager (2022). Available from: https://www.labmanager.com/ask-the-expert/challenges-and-trends-in-gc-headspace-analysis-2294
D’Silva, J.: India’s problem with toxic alcohol. BMJ 25, 351 (2015)
Desai, T., Sudhalkar, A., Vyas, U., Khamar, B.: Methanol poisoning: predictors of visual outcomes. JAMA Ophthalmol. 131(3), 358–364 (2013)
Druid, H., Holmgren, P.: A compilation of fatal and control concentrations of drugs in postmortem femoral blood. J. Forensic Sci. 42(1), 79–87 (1997)
Edenberg, H.J.: The genetics of alcohol metabolism: role of alcohol dehydrogenase and aldehyde dehydrogenase variants. Alcohol. Res. Health. 30(1), 1–5 (2007)
Haffner, H.T., Wehner, H.D., Scheytt, K.D., Besserer, K.: The elimination kinetics of methanol and the influence of ethanol. Int. J. Legal Med. 105, 111–114 (1992)
Ioan, B.G., Jitaru, V., Damian, R., Damian, S.I.: Study on the relationship between the concentration of ethanol in the blood, urine and the vitreous humour. Roman. J. Leg. Med. 23(3), 211–216 (2015)
Islek, D.S., Ramadanoglu, S.: Headspace-gas chromatography/mass spectrometry analysis of methanol in blood. Medicine 6(2), 372–374 (2017)
Jollymore, B.D., Fraser, A.D., Moss, M.A., Perry, R.A.: Comparative study of ethyl alcohol in blood and vitreous humor. Can. Soc. Forensic Sci. J. 17(2), 50–54 (1984)
Jones, A.W.: Clinical and forensic toxicology of methanol. Forensic Sci. Rev. 33(2), 117–143 (2021)
Lee, X.P., Kumazawa, T., Kondo, K., Sato, K., Suzuki, O.: Analysis of methanol or formic acid in body fluids by headspace solid-phase microextraction and capillary gas chromatography. J. Chromatogr. B Biomed. Sci. Appl. 734(1), 155–162 (1999)
Lee, J.B., Jeong, Y.A., Ahn, D.J., Bang, I.S.: SPME-GC/MS analysis of methanol in biospecimen by derivatization with pyran compound. Molecules 25(1), 41 (2019)
Maleki, R., Farhadi, K., Matin, A.A.: Analysis of ethanol and methanol in human body fluids by headspace solid phase microextraction coupled with capillary gas chromatography. Anal. Sci. 22(9), 1253–1255 (2006)
Meyer, R.J., Beard, M.E., Ardagh, M.W., Henderson, S.: Methanol poisoning. N. z. Med. J. 113(1102), 11 (2000)
Mihretu, L.D., Gebru, A.G., Mekonnen, K.N., Asgedom, A.G., Desta, Y.H.: Determination of ethanol in blood using headspace gas chromatography with flame ionization detector (HS-GC-FID): validation of a method. Cogent Chem. 6(1), 1760187 (2020)
Na, J.Y., Park, J.H., Oh, Y.H., Oh, S.M., Kim, H.S., Park, J.T.: Analysis of cisternal puncture results during a postmortem examination. Korean J. Leg. Med. 40(2), 39–43 (2016)
Neil, P., Mills, A.J., Prabhakaran, V.M.: Evaluation of vitreous humor and urine alcohol levels as indices of blood alcohol levels in 75 autopsy cases. Can. Soc. Forensic Sci. J. 18(2), 97–104 (1985)
Nekoukar, Z., Zakariaei, Z., Taghizadeh, F., Musavi, F., Banimostafavi, E.S., Sharifpour, A., Ghuchi, N.E., Fakhar, M., Tabaripour, R., Safanavaei, S.: Methanol poisoning as a new world challenge: a review. Ann. Med. Surg. 1(66), 102445 (2021)
Ott J, Gronemann V, Pontzen F, Fiedler E, Grossmann G, Kersebohm DB, Weiss G,Witte C. Methanol. Ullmann's encyclopedia of industrial chemistry. 2 (2000)
Pressman, P., Clemens, R., Sahu, S., Hayes, A.W.: A review of methanol poisoning: a crisis beyond ocular toxicology. Cutan. Ocul. Toxicol. 39(3), 173–179 (2020)
Rahimi, R., Zainun, K.A., Noor, N.M., Kasim, N.A., Shahrir, N.F., Azman, N.A., Elankopan, R., Nikman, K.A., Room, N.H.: Methanol poisoning in Klang Valley, Malaysia: autopsy case series. Forensic Sci. Int. Rep. 1(3), 100170 (2021)
Salendu, A.R., Meilia, P.D.: Clinical and pathological findings in multiple deaths due to dissolved alcohol toxicity (2017)
Seth, S.: Review of Forensic Medicine, pp. 266–267. Peepee Publishers & Distribution, New York (2018)
Skopp, G.: Postmortem toxicology. Forensic Sci. Med. Pathol. 6, 314–325 (2010)
Tephly, T.R.: The toxicity of methanol. Life Sci. 48(11), 1031–1041 (1991)
Tian, M., He, H., Liu, Y., Li, R., Zhu, B., Cao, Z.: Fatal methanol poisoning with different clinical and autopsy findings: case report and literature review. Leg. Med. 1(54), 101995 (2022)
Tumram, N.K., Bardale, R.V., Dongre, A.P.: Postmortem analysis of synovial fluid and vitreous humour for determination of death interval: a comparative study. Forensic Sci. Int. 204(1–3), 186–190 (2011)
Weinberg, L., Stewart, J., Wyatt, J.P., Mathew, J.: Unexplained drowsiness and progressive visual loss: methanol poisoning diagnosed at autopsy. Emerg. Med. 15(1), 97–99 (2003)
Williams, G.F., Hatch, F.J., Bradley, M.C.: Methanol poisoning: a review and case study of four patients from central Australia. Aust. Crit. Care 10(4), 113–118 (1997)
Wolthers, H.: Undersøgelser over Postmortal Alkoholdannelse, pp. 1–79. Christtreus Bogtrykkeri, Copenhagen (1958)
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Afaria, N., Jaiswal, A.K., Janarthanan, V. et al. Quantitative analysis of methanol in blood, urine, vitreous humor, and cerebrospinal fluid by using gas chromatography-head space in two suspected cases of methanol poisoning. Proc.Indian Natl. Sci. Acad. 89, 731–739 (2023). https://doi.org/10.1007/s43538-023-00179-5
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DOI: https://doi.org/10.1007/s43538-023-00179-5