Recently, we released our 2 µm, fast liquid chromatography (LC) silica-based, reversed-phase column for explosive residue analysis to provide a faster analysis of all 14 explosives listed in EPA SW-846 Method 8330: Nitroaromatics and Nitramines by HPLC. The new column provides high efficiency and symmetrical peaks for easier and more accurate quantification. You can view sample chromatograms here.
Explosives are not only highly toxic and carcinogenic but also have a tendency to persist in the environment around munitions plants, battlefields, and army firing ranges, and thus impact groundwater, soil, and sediments. An additional demand that has risen in the last decade is the need to analyze explosives and their degradation products for forensic analysis of terrorist activities. The US EPA also requires thorough characterization of sites where explosives are routinely used.
The unique chemistries of the two explosives columns–Thermo Scientific Acclaim™ Explosives E1 (5 µm) and E2 (5, 3 and 2.2 μm)–deliver superior resolution with complementary selectivities. The E1 column is recommended for use as a direct replacement for ODS columns for primary analysis while the E2 column can be used as either a primary or a confirmatory column or for other similar analysis. (In case you are interested in the column specifications, here’s the link to the datasheet.)
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A few years ago, some of our senior scientists wrote an in-depth article on this application for American Laboratory News, which still holds true for this analysis. You can access a PDF reprint of the article on our website.
Let us know if you are testing for explosives other the ones listed in the above EPA method.