The Xact® 920 system is the latest application of SCI’s automated XRF module that allows for the analysis of continuously-drawn aqueous samples for user-selected metals.
A measured amount of unknown sample is blended with a known amount of internal standard which is continuously nebulized, evaporated, and collected onto the filter tape. The liquid sample is aerosolized facilitating the removal of water and allowed metal salts to be concentrated on the filter tape. This method of pre-concentration allows detection limits in the low parts per billion (ppb) ranges for elements ranging from potassium to uranium.
The concentrated deposit is automatically advanced and analyzed by XRF for selected metals as the subsequent sample is collected. Sampling and analysis are performed continuously and simultaneously, except during the advancement of the tape (~20 sec) and during daily-automated quality assurance checks.
Global power design does not require power conversion
Benefits
Highly sensitive and reliable (low ppb to high ppm)
Large measurement range (greater than 5 orders of magnitude) with single calibration
Nondestructive analysis for sample archiving
Low maintenance cost
Extremely stable, requiring only automated calibration checks
Analytical recalibration frequency generally less than once per year
Applications
The Xact® 920 monitoring system can simultaneously identify and measure multiple elements in liquid samples providing near real-time data for the following applications:
If you want to know more about current state of effluent limitation guidelines for steam EGU, advantages of real time monitoring, Xact ® 920’s operation and capabilities, laboratory testing, and field testing monitoring Se in bioreactor effluent, click here for more information.
