Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Peter G. Markow"'
Publikováno v:
Journal of Chemical Education. 88:24-28
This article presents a brief history of the artificial coloration of foods, a discussion of the worldwide use of synthetic food dyes, and methods for separating and identifying 14 dyes in common use globally. The United States Food and Drug Administ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83ba7f2a55a71ad71ce717226b0135a7
https://doi.org/10.1021/ed100545v
https://doi.org/10.1021/ed100545v
Autor:
Robert A. Lonning, Peter G. Markow
Publikováno v:
Journal of Research in Science Teaching. 35:1015-1029
The problem addressed by this study is that first-year college chemistry students learn little of the conceptual material associated with chemistry experiments they perform. The thesis of this research is that the construction of prelab and postlab c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d96adb91abf81056fefded4a2b292483
https://doi.org/10.1002/(sici)1098-2736(199811)35:9<1015::aid-tea4>3.0.co
https://doi.org/10.1002/(sici)1098-2736(199811)35:9<1015::aid-tea4>3.0.co
Autor:
Peter G. Markow
Publikováno v:
Journal of Chemical Education. 73:178
This article describes a two-week experiment for introductory chemistry students, where they analyze the lead content of paint chip samples using atomic absorption spectrophotometry (AAS). It involves the preparation of standard lead solutions, prepa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d6e8b7c560aa86293cb31c6d00b9e38
https://doi.org/10.1021/ed073p178
https://doi.org/10.1021/ed073p178
Autor:
Peter G. Markow
Publikováno v:
Journal of Chemical Education. 57:307
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bae1eee28b6b45b09f41a28ff63ebc8
https://doi.org/10.1021/ed057p307
https://doi.org/10.1021/ed057p307
Autor:
Peter G. Markow
Publikováno v:
Journal of Chemical Education. 65:899
The author points out that while the solvents normally used in paper chromatography are not particularly hazardous or expensive, they are not always practical or available for high school laboratories. He suggests the substitution of a salt solution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::feb24703cfe1c6b4dc702fb19d798576
https://doi.org/10.1021/ed065p899
https://doi.org/10.1021/ed065p899
Autor:
Peter G. Markow, John A. Cramer
Publikováno v:
Journal of Chemical Education. 60:1078
The author presents a laboratory experiment which introduces undergraduate students to the techniques of NMR through the analysis of a commercial furniture refinisher.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e097819b1881dd79691eb1ce386dc79
https://doi.org/10.1021/ed060p1078
https://doi.org/10.1021/ed060p1078