Posts Tagged ‘dioxane’

Use Isotope Dilution when Reporting 1,4-Dioxane by EPA Method 8270x

1,4-dioxane results are prone to a low bias when analyzing hazardous waste by methods that incorporate an extract concentration step. Due to its high vapor pressure, 1,4-dioxane is driven off with the extraction solvent (typically dichloromethane). The authors of EPA Method 522 explicitly forbade extract concentration; they saw  losses of over 30% when concentrating their extracts […]

Is there a limit to the volume you can inject into an agilent split/splitless inlet?

Theoretically, the answer is no; the limiting factor of a concurrent solvent recondensation – large volume splitless injection (CSR_LVSI) is the surface area available to support a stable film of recondensed solvent. If you read my previous post, which utilized a 50 µL injection to meet lower detection limits for 1,4-dioxane and various nitrosamines, you may […]