Abstract: The utilization of a specific preconcentration protocol within an automated, on-line drinking water analysis method to amplify detection levels of individual halo acetic acids is provided. The proposed sequential injection analysis procedures allow for measuring such levels in drinking water samples from remote locations with post-column reaction of ion chromatography (PCR-IC). The novel remote preconcentration method injects such known concentrations via a syringe at regular intervals in a manner to provide a baseline measurement that accords a reliable comparison with the unknown amounts present within the drinking water samples at issue. In such a manner, the on-line, remote system provides the necessary reliability for a water utility or like entity on which to base any further needed water treatment activities without having to perform such measurements in a distinct lab setting.

Abstract: The present invention relates to the provision of a portable kit that permits reliable and quantifiable analysis of trihaloamethanes and haloacetic acids within drinking water samples utilizing a hand-held (portable) fluorescing detection instrument for simultaneous measurements of such species. With the necessity to chlorinate drinking water to remove harmful bacteria and other potential toxins, trihalomethane and haloacetic acid byproducts are generated during such a disinfecting procedure that may harm humans after consumption as well due to highly suspect carcinogenicity. A reliable manner of measuring such drinking water supplies for such disinfectant byproduct levels is highly desirable, particularly through the utilization of a relatively inexpensive analytical instrument for such a purpose.

Abstract: Constant calibration methods and apparatuses for analytical devices that are located in remote positions in order to allow for reliable and automated measurements of various contaminants within water or other liquid samples. The proposed calibration systems allow for certain methods to measure total amounts of certain trihalomethane and haloacetic acid contaminants, at least, in drinking water samples from such remote locations, through the utilization of a standard addition introduction of known concentrations of such contaminant compounds within target samples, followed by separation through a capillary membrane sampling device and measurement of such different contaminants via flow injection analysis (FIA). In such a manner, the on-line, remote system provides the necessary reliability for a water utility or like entity on which to base any further needed water treatment activities without having to perform such measurements in a distinct lab setting.