The potential for use of alternatives to total petroleum hydrocarbons (TPH) for remediation purposes was examined specifically for JP-4 fuel. The study objective was to determine the scientific basis for use of fuel constituents other than TPH in establishing soil cleanup standards at JP-4-contaminated sites. The general bases for TPH soil cleanup standards or goals were characterized. Problems...

Participants on the front lines of abuse reporting have a variety of options to notify intermediaries and resource owners about abuse of their systems and services. These can include emails to personal messages to blacklists to machinegenerated feeds. Recipients of these reports have to voluntarily act on this information. We know remarkably little about the factors that drive higher response r...

A simple, fast, reliable, and inexpensive chemical cleanup procedure was developed for quantitation of aflatoxins in major important agricultural commodities by liquid chromatography (LC). Aflatoxins were extracted from a ground sample with methanol-water (80 + 20, v/v), and after a single cleanup step on a minicolumn packed with basic aluminum oxide, they were quantitated by LC equipped with a...

For several years, the National Oceanic and Atmospheric Administration Hazardous Materials Response Division (NOAA/HAZMAT) has been using and distributing the computer software package called ADIOS (Automated Data Inquiry for Oil Spills) to aid responders in oil spill cleanup. ADIOS forecasts the weathering processes and characteristics of oil slicks. Based on new research results and analysis...

Highly efficient capillary electrochromatographic separations of cardiac glycosides and other steroids are presented. Employing butyl-derivatized silica particles as stationary phase resulted in a nearly three times faster electroosmotic flow (EOF) compared to capillary electrochromatography (CEC) with octadecyl silica particles. On-column focusing with a preconcentration factor of 180 was perf...

BACKGROUND Streptokinase is a potent activator of plasminogen to plasmin, the enzyme that can solubilize the fibrin network in blood clots. Streptokinase is currently used in clinical medicine as a thrombolytic agent. It is naturally secreted by β-hemolytic streptococci. METHODS To reach an efficient method of purification, an immunoaffinity chromatography method was developed that could puri...

We describe a simple, rapid immunoaffinity procedure for purifying the MB isoenzyme of creatine kinase. Immunoaffinity gel is prepared by linking a monoclonal antibody ("Conan-MB"), specific for this isoenzyme, to Sepharose 4B. Heart tissue is homogenized and fractionated with 40-70% saturated ammonium sulfate before it is applied to the immunoaffinity gel. CK-MB activity, retained on the gel, ...

Because of concern about possible transmission of ochratoxin A (OA) from contaminated grain adjuncts, development of a sensitive method for its determination in beer was investigated. Solid phase extraction (SPE) on C-18 and silica gel columns in series and on an immunoaffinity column (OchraTest) were used to obtain extracts for quantitation by reverse phase liquid chromatography with fluoresce...