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Vacuum Centrifugal Concentrator: The "Trace Pollutant Catcher" for Environmental Monitoring
Views: 596 Author: Site Editor Publish Time: 2025-11-05 Origin: Site
Vacuum Centrifugal Concentrator: The "Trace Pollutant Catcher" for Environmental Monitoring
In the field of environmental monitoring, the Vacuum Centrifugal Concentrator is a core equipment for pretreatment before the detection of trace pollutants in water samples. It integrates centrifugal force, vacuum environment and low-temperature heating technology to quickly concentrate trace pollutants such as heavy metal ions, pesticide residues and antibiotics in water samples, concentrating tens or even hundreds of milliliters of water samples to 1-5 milliliters, which greatly improves the sensitivity of subsequent detection (such as atomic absorption spectroscopy, gas chromatography). Widely used in monitoring scenarios such as surface water, groundwater and industrial wastewater, it can accurately capture pollutants as low as ppb level (one part per billion), providing reliable data support for environmental quality assessment.
Operating the Vacuum Centrifugal Concentrator must follow the principle of "pollutant type adaptation - precise parameter regulation". When processing water samples containing heavy metal ions (such as lead and cadmium), the heating temperature is controlled at 35℃-45℃, the vacuum degree is maintained at 60-90Pa, and the centrifugal speed is set to 1800rpm to avoid high temperature causing heavy metal ions to adsorb on the container wall; when processing water samples containing organic pesticide residues (such as organophosphorus), the temperature is reduced to 25℃-35℃, the vacuum degree is adjusted to below 40Pa, and the concentration time is extended to prevent pesticide volatilization loss. Before loading the water sample, it must be filtered through a filter membrane to remove suspended solids, and the centrifuge tube must be made of inert material to avoid reaction with pollutants.
Daily maintenance should focus on "anti-pollution" and "component calibration". After each use, soak the centrifuge tube in dilute nitric acid for 30 minutes, then rinse it with ultrapure water; wipe the inner wall of the cavity and the rotor with absolute ethanol to remove residual pollutants and prevent cross-contamination; check the color of the vacuum pump oil every week, replace it in time if it becomes turbid or layered, and clean the air intake filter at the same time; calibrate the concentration recovery rate with standard solution every month to ensure the error is controlled within ±5%; detect the stability of temperature and vacuum degree every quarter, and debug the sensor in time if it deviates from the set value. When idle for a long time, purge the chamber with nitrogen to keep it dry and clean.
Compared with traditional rotary evaporators, the Vacuum Centrifugal Concentrator has the advantages of high concentration efficiency (single water sample processing time reduced by 50%), high pollutant recovery rate (up to more than 95%) and low sample consumption. It can also process multiple groups of water samples at the same time, adapting to the needs of batch monitoring. With the improvement of environmental monitoring requirements for trace pollutant detection, Vacuum Centrifugal Concentrators with intelligent program storage, touch screen control and data export functions have become essential equipment for environmental monitoring laboratories to improve detection accuracy and efficiency.
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