A fluorometer may be used to measure ultralow concentrations of fluorescing species, such as ultralow concentrations of fluorescent tracer passing through a reverse osmosis membrane into a permeate stream. In some examples, the fluorometer may be recalibrated by resetting some but not all of the calibration parameters used to determine the concentration of fluorescent tracer in the permeate based on the measured fluorescent response of the fluorometer. For example, an intercept of a calibration curve may be reset or recalibrated for the fluorometer in situ, potentially providing significant accuracy improvements even though the fluorometer has not undergone a full recalibration.
Method for quantitatively measuring the concentration of chemicals in aqueous solution
申请人:SNF HC
公开号:US10900959B2
公开(公告)日:2021-01-26
The disclosure relates to a method for quantitatively measuring concentration in an aqueous solution of a water soluble polymer that is functionalized with at least one tracer, wherein the method involves impregnating a flow assay with a test area, introducing the flow assay into a test reader, and using the test reader to compare test data to a calibration curve so as to determine the concentration of the water-soluble polymer. This method allows the determination of residuals concentration in aqueous solution recovered from different industries, including oil and gas produced water, mining fluids, industrial water systems, and water treatment applications.
Disclosed are corrosion inhibitor compounds and compositions useful for preventing or inhibiting corrosion of surfaces found in cooling water applications. In some embodiments, the surfaces may include mild steel, aluminum, brass, copper, galvanized steel, a copper alloy, admirality brass, or any combination thereof. Also disclosed are methods of using the compounds and compositions as corrosion inhibitors. In some embodiments, the corrosion inhibitor compounds and compositions are used in cooling water applications.
A method of tracing drains using non-toxic fluorescent tracers is described and claimed.
描述并声称了一种使用无毒荧光示踪剂追踪排水沟的方法。
Method of monitoring membrane separation processes
申请人:——
公开号:US20040185472A1
公开(公告)日:2004-09-23
Methods and systems for monitoring and controlling membrane separation systems are provided. The present invention uses measurable amounts of one or more inert fluorescent tracers added to a feed stream to evaluate and/or control the unit operation of processing such feed stream during membrane separation. The methods and systems of the present invention can be used in a variety of different industrial applications including raw water processing and waste water processing.