Application Scheme for ROHS Instruments in Determining Inorganic Elements in Soil Sediments

Application Scheme for ROHS Instruments in Measuring Inorganic Elements in Soil Sediments

Instrument Introduction

The WDX4000 Sequential Wavelength Dispersive X-ray Fluorescence Spectrometer is a research achievement of the National Major Scientific Instrument Special Project undertaken by Tianrui Instruments, boasting complete independent intellectual property rights and multiple national patents. The WDX4000 incorporates a large number of innovative and generalized designs, featuring a 40-position automatic sampler, with excellent performance and easy operation.

1) Angle Gauge: Patented innovative steel belt transmission system, precise dual-axis, with calibration certificates issued by metrological departments.

2) High Voltage: Maximum power ≥ 4kW, rapid switching, stable performance, extremely low failure rate.

3) Light Tube: Downward-facing, 4kW, Rh target, paired with a dual-channel light tube water cooling system, significantly extending the lifespan of the light tube.

3) Filters: 5 sets, optimized configuration of Cu, Al filters and dust-proof filters;

4) Collimators: 3 units, catering to customers' preference for resolution and intensity during trace element measurements.

5) Crystals: Standard configuration includes 5 crystals, capable of qualitative and quantitative analysis for elements between C6-U92, with 3 additional empty slots available for customization.

6) Detectors: Scintillation Detector with a maximum linear counting rate of 3000kcps, Gaseous Detector with a maximum linear counting rate of 1500kcps, featuring automatic core wire cleaning function;

7) Automatic Sample Loader: 40-Axis Fully Automatic Mechanical Arm Sample Loader

8) The latest version of the operation software features theoretical a coefficient calibration, empirical α, β, γ coefficient calibration, FP parameter calibration, spectral line overlap correction, instrument status monitoring, and a powerful SQLite-specific database.

Our exclusive vacuum airway buffer system effectively protects film-type samples, widely used in the atmospheric particulate matter detection field.

Experimental Principle

The primary X-rays emitted from high-power high-voltage light tubes are directed onto the sample surface after passing through a filter, exciting characteristic X-rays from the various elements within the sample. The characteristic X-rays, after being collimated by a single collimator, are parallelly incident on a diffraction crystal. A goniometer then scans to identify characteristic X-rays that meet the Bragg diffraction conditions. The X-rays, upon passing through a second collimator, enter a detector for signal collection. The final qualitative and quantitative analysis is achieved through computer software processing.