APPLICATION A COLORIMETRIC METHOD FOR QUALITATIVE ANALYSIS OF METHANOL

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RAFIZADEH ALI; SHARIATI SHAHAB; POURMOHAMMAD LIELA; FOOLADMEHR SOODEH

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Paper Information

Journal: Iranian Journal of Forensic Medicine Year:2010 | Volume:16 | Issue:2 (58) Page(s): 89-94

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Title

APPLICATION A COLORIMETRIC METHOD FOR QUALITATIVE ANALYSIS OF METHANOL

Author(s)

RAFIZADEH ALI | SHARIATI SHAHAB | POURMOHAMMAD LIELA | FOOLADMEHR SOODEH | Issue Writer Certificate

Keywords

METHANOLQ3

QUALITATIVE ANALYSISQ3

COLORIMETERYQ3

CHROMOTROPIC ACIDQ3

Abstract

Background: In spite of many usefulness and progressive application of METHANOL in today life and industry, the accidental or unawareness drinking of it in alcoholic drinks caused some problems in public health. Therefore, it seems, qualitative detection of METHANOL in concentrations more than permissible dose in such products is necessary.In this study, a new qualitative method with easy application based on CHROMOTROPIC ACID method has been suggested for detection of toxic dose of METHANOL in alcoholic drinks.Methods: After adding potassium permanganate (contaning orthophosphoric acid) to sample into a fixed 50 mL volumetricflask in a cold bath and waiting for specified period, enough sodium hydrogen sulfite is added to it for decolorizing of mixture. Then, CHROMOTROPIC ACID with concentrated sulfuric is added to theflask and it is fixed in a 60oC bath for 15 minutes. After this time, theflask is cooled and its volume is arisen to 50 mL and then, optical density of the solution is determined in 575 nm.Findings: The obtained results were shown; application of micro amounts of sample and reactants would have good results such as decreasing of application limits of classic CHROMOTROPIC ACID method. Furthermore, using of a competitive reactant (propanol) is lead to detection of METHANOL in concentrations more than toxic amount in alcoholic drinks.Conclusion: For detection of METHANOL in concentrations more than permissible dose or toxic amount in alcoholic drinks that based on European countries standard is about 0.4% v/v, the CHROMOTROPIC ACID method can be used as an accurate, sensitive, simple, cheap and rapid method in general laboratories with no especial equipment.

Cites

STUDY OF ETHANOL PRESENCE IN SOME ORNAMENTAL AND AROMATIC PLANTS USING GAS CHROMATOGRAPHY

References

QUANTITATIVE DETERMINATION OF METHANOL IN PLANT WATER PRODUCED IN MASHHAD BY SPECTROPHOTOMETRY METHOD

Cite

APA: Copy

RAFIZADEH, ALI, SHARIATI, SHAHAB, POURMOHAMMAD, LIELA, & FOOLADMEHR, SOODEH. (2010). APPLICATION A COLORIMETRIC METHOD FOR QUALITATIVE ANALYSIS OF METHANOL. SCIENTIFIC JOURNAL OF FORENSIC MEDICINE, 16(2 (58)), 89-94. SID. https://sid.ir/paper/53269/en

Vancouver: Copy

RAFIZADEH ALI, SHARIATI SHAHAB, POURMOHAMMAD LIELA, FOOLADMEHR SOODEH. APPLICATION A COLORIMETRIC METHOD FOR QUALITATIVE ANALYSIS OF METHANOL. SCIENTIFIC JOURNAL OF FORENSIC MEDICINE[Internet]. 2010;16(2 (58)):89-94. Available from: https://sid.ir/paper/53269/en

IEEE: Copy

ALI RAFIZADEH, SHAHAB SHARIATI, LIELA POURMOHAMMAD, and SOODEH FOOLADMEHR, “APPLICATION A COLORIMETRIC METHOD FOR QUALITATIVE ANALYSIS OF METHANOL,” SCIENTIFIC JOURNAL OF FORENSIC MEDICINE, vol. 16, no. 2 (58), pp. 89–94, 2010, [Online]. Available: https://sid.ir/paper/53269/en

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