A study of Mandelin’s test for strychnine*

Poe, Charles F.; O’Day, David W.

doi:10.1002/jps.3080191206

Cited by 4 publications

(4 citation statements)

References 1 publication

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“…Named spot tests, partly delineated in Table 1, include the Mandalin, 5 Dille-Koppanyi, 6 Zimmermann, 3 Mecke and Marquis tests. 1 Our investigation has focused on digital varients of the first three of these tests.…”

Section: Presumptive Testsmentioning

confidence: 99%

Teaching Old Presumptive Tests New Digital Tricks with Computer Vision for Forensic Applications

Bugeja

Oliver

McGrath

et al. 2023

Preprint

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Presumptive (or 'spot') tests have served forensic scientists, law enforcement, and legal practitioners for over a hundred years. Yet, the intended design of such tests, enabling quick identification of drugs by-eye, also hides their full potential. Here, we report the development and application of time-resolved imaging methods of reactions attending spot tests for amphetamines, barbiturates, and benzodiazepines. Analysis of the reaction videos helps distinguish drugs within the same structural class that, by-eye, are judged to give the same qualitative spot test result. It is envisaged that application of these results will bridge the existing suite of field and lab-based confirmatory forensic tests, and support a broader range of colorimetric sensing technologies.

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Section: Presumptive Testsmentioning

confidence: 99%

Teaching Old Presumptive Tests New Digital Tricks with Computer Vision for Forensic Applications

Bugeja

Oliver

McGrath

et al. 2023

Preprint

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show abstract

“…Instructors can explain that an early qualitative analysis for strychnine was Mandelin's test, which involves adding sulfuric acid and ammonium vanadate to a sample. 27 A positive reaction is indicated by the formation of a purple color due to the reduction of V 5+ to V 2+ . Although the film is black and white, the appearance of a dark color in the test tube, as well as the use of sulfuric acid, would suggest that Christie had done her homework.…”

Section: Coordination Chemistrymentioning

confidence: 99%

“…Instructors can explain that an early qualitative analysis for strychnine was Mandelin’s test, which involves adding sulfuric acid and ammonium vanadate to a sample . A positive reaction is indicated by the formation of a purple color due to the reduction of V 5+ to V 2+ .…”

Section: Topicsmentioning

confidence: 99%

Using Classic Movie Chemistry Scenes to Introduce Classroom Activities

Thomas

2021

J. Chem. Educ.

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A list of classic movies containing chemistry-related scenes is provided for instructors to use when introducing a variety of general chemistry topics. Most of these movies have not been previously discussed in this context. The scenes can be legally copied for use in classroom PowerPoint lectures, and steps for doing this are discussed. The clips can be used alongside suggested activities for demonstrations, laboratory experiments, classroom discussions, and problem-solving or essay assignments to complement the film scenes.

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“…Named spot tests, partly delineated in Table 1 , include the Mandelin, 5 Dille–Koppanyi, 6 Zimmermann, 3 Mecke and Marquis tests. 1 Our investigation has focused on digital variants of the first three of these tests.…”

Section: Introductionmentioning

confidence: 99%