An Economical Method for Static Headspace Enrichment for Arson Analysis

Abstract

Static headspace analysis of accelerants from suspected arsons is accomplished by placing an arson sample in a sealed container with a carbon strip suspended above the sample. The sample is heated, cooled to room temperature, and then the organic components are extracted from the carbon strip with carbon disulfide followed by gas chromatography analysis. A locally available carbon filter has successfully been substituted for the Albrayco carbon strip commonly used in arson analysis. This substitution has resulted in a cost reduction from $1.50 to 1.5¢ per sample.

Crafting Chemical Art with Safflower Extract: Home-based Acid–Base Chemistry and Spectrochemistry During Holidays

“…Students will execute the experiment at their own homes during the winter vacation, following the procedure outlined by the authors, and will showcase their findings at the commencement of the subsequent semester (Figure ). The experiment follows the principles of safety, green, , simplicity, − and economy. , …”

“…The experiment follows the principles of safety, 19 green, 20,21 simplicity, 22−24 and economy. 25,26 Weigh out 20 g of safflower, and introduce it into the extraction apparatus (Figure 7A and B). Submerge the safflower in 300 mL of an acidic dye solution, prepared with either white vinegar or lemon juice, at pH = 4−6.…”