Use of portable XRF in Coltan exploration

Use of Portable XRF In Coltan Exploration

 

Portable Analytical Solutions

Field Portable XRF

Is Factory Calibration of Portable XRF In Coltan Exploration Accurate and Reliable, or is user calibration required?

A paper published by the Department of Geology at Brandon University in Canada answers this question. 

 

The Purpose of the Paper

While FPXRF is known as a technique that can produce fast and accurate results (depending on the concentration, sample type and operational conditions) with little or no sample preparation, there were still some questions around the reliability of the factory calibration.

 

Field-Portable X-Ray Fluorescence (FPXRF) has many applications in the earth and environmental sciences, including Coltan (Columbite-Tantalite) exploration, mining and trading. Common elements of interest including Ta, Nb, Sn, W and Fe can be easily identified and quantified using FPXRF, which can simultaneously analyze a wide range of elements from Mg to U, with detection limits down to a few ppm for some elements.

 

The paper discusses the analysis of 21 dry powder specimens using a ThermoFisher Niton XL3t-950 with x-ray excitation at 50 kV, 200 µA, using Ag anode, compared to lab data of the same samples.

 

It explains in detail the application of this analytical technique on Coltan and associated metals (Ta, Nb, Sn, W and Fe), as well as suitability of the factory calibration on these metals and benefits of a user calibration.

 

The Findings

 

As the paper states, it is proven that this technique is very beneficial to any project; however, the users need to be familiar with limits of the instrument and adjust their expectations accordingly. The comprehensive Camiro study (Hall et al., 2014) showed that in many cases, in order to use FPXRF as a quantitative tool a user calibration is required.

 

This research is also an example of how the accuracy of raw FPXRF data can be improved applying the user calibration. It shows that for coltan samples, the threshold for the acceptable results (based on the factory calibration) varies depending on the element of interest and the concentrations. This adjustment, or user calibration, is done using certified standards or known samples which have been analyzed by laboratory techniques. 

 

To read the full paper, please click on the button below:

Growscreen Rhizo

Lemnatec™ Growscreen Rhizo

Portable Analytical Solutions

growscreen rhizo

A combined root and shoot phenotyping solution for glasshouses, growth rooms, climate chambers, cultivation halls, or indoor farms 

Challenges in root phenotyping

While most phenotyping solutions focus on above-ground traits of the plants, roots are usually hidden in soil and thus not accessible to measurements. To make them visible, specific cultivation measures are available. The Growscreen Rhizo uses soil-filled rhizoboxes placed at 45° angle that have a transparent plate where roots are visible for image recording. In collaboration with and under licence of the Forschungszentrum Jülich, LemnaTec offers the Growscreen Rhizo as combined root-and shoot- phenotyping system. Core component is an image acquisition cabinet with high-resolution cameras focused on the roots and the shoots of the plants. Thereby, classical shoot imaging is done simultaneously with precision root imaging. The cabinet is also equipped with dedicated illumination to enable optimal image recording.

Advantages of Growscreen Rhizo

We offer an automated root and shoot phenotyping system for soil-based systems that is superior to other methods that use artificial media for plant growth.

  • Roots in soil – no artificial media required
  • Soil-filled rhizoboxes at 45° angle
  • Non-destructive – access to roots without digging or washing
  • Time-course studies
  • Root- and Shoot data for each plant
  • High-resolution root imaging
  • High-resolution shoot imaging
  • Advanced analytical software, machine learning algorithms available
  • Weighing and watering option
  • Automation options

Technological features

Roots and shoots of the growing plants are imaged with industry-grade high-resolution cameras, combined with advanced light technology that allows reflection-free image recording.

A balance and water supply system can be mounted for precise control of soil water content, enabling growth scenarios with different water availability.

Automation technology is available to move in and out the rhizoboxes so that experiments with repeated time-course measurements can be planned. Automation can be done with conveyer-based systems or with magazine automation technology, depending on the local requirements.

Software tools give access to shoot- and root- phenotypic traits such as growth and morphology. Root systems are characterised for root system depth and width and for spatial root distribution, together with root length and width data, rooting angles or total root area. Shoot systems are analysed for height, width, area, and morphological factors, together with colour data.

We recommend to record environmental data in the plant growth area, such as temperature, light, or air humidity. We offer recording systems that store the environmental data together with the phenotypic data of the corresponding plants.



For more details, download the brochure

For more details, download the brochure

Canopy Scanalyzer

Lemnatec™ Canopy Scanalyzer

Portable Analytical Solutions

growth chamber canaopy scanalyzer
industrial greenhouse

Canopy Scanalyzer solutions for glasshouses, growth rooms, climate chambers, cultivation halls, or indoor farms 

Automated high-throughput Canopy Scanalyzers combine rapid automated data recording with advanced analytical software and machine learning.

LemnaTec is the global specialist for automated Scanalyzer Solutions that not only save time and labour, but also provide a much broader base of information compared to visual scoring. The Canopy Scanalyzer technology is dedicated to users who work with ground-standing plants – directly in soil, in containers, or pots – that are not movable, or not intended to move. The sensor-to-plant system records imaging data from above the plants, and usually delivers data on plant canopies rather than on individual plants.

  • Sensor to plant
  • Sensors mounted on gantry structure that moves across plant area
  • Fixed plant positions
  • Broad range of imaging and sensing modules
  • Dedicated optics and illumination
  • Available for a range of dimensions
  • Sensing equipment in a sensor bay mounted on the gantry or sensor exchange system

We recommend to record environmental data in the plant growth area, such as temperature, light, or air humidity. We offer recording systems that store the environmental data together with the phenotypic data of the corresponding plants.



For more details, download the brochure

Field Scanalyzer

Lemnatec™ Field Scanalyzer

Portable Analytical Solutions

AUTOMATED OUTDOOR PHENOTYPING 

The Field Scanalyzer Gantry System is a 3-axis sensor-to-plant phenotyping system. The design and construction bases on an industrial portal crane system. The x-axis is guided along a rail system underpinned by concrete piles driven into the ground so as to allow natural drainage and no impediments as traditional concrete footings may act as flow barriers. In x-direction, length is only limited by the cabling requirements; one of our customer installations reaches 500 m length. The y axis is orthogonal to the rails and bears the lifting unit for the container with the sensing equipment. In y-direction customised width, e.g. 10 m, 20 m or 30 m is possible to span over a given growth area. The z axis serves to lift up and down the container with the sensor equipment.
This setup will allow a precise movement of all 3 axes throughout the year. The sensor box can reach each point of the measuring area in pre-defined schedules with repeatable high precision in the sub-centimetre range.
The system carries a sensor box for phenotyping sensors and environmental sensors. Any of the camera system will be housed in a separate weather sealed housing and mounted on a flexible and adjustable platform within the imaging box. The total payload of the camera box can reach up to 500 kg allowing full flexibility for future adjustments and expansions of the sensor platform. The weather shielding of the sensor box protects the electronic equipment during harsh weather. This comprises a roller door at the down facing side of the platform to fully protect the sensors while not in use.
Having environmental sensors on board, the Field Scanalyzer records climatic data during all phenotypic measurements so that users find phenotype and environment data linked in the database.

field scanalyzer
field scanalyzer aerial picture
agricultural field harvesting

Conveyor Scanalyzer

Lemnatec™ Conveyor Scanalyzer

Portable Analytical Solutions

conveyor scanalyzer lemnatec greenhouse 

Conveyor-based Scanalyzer Solutions for glasshouses, growth rooms, climate chambers, cultivation halls, or indoor farms. 

Automated high-throughput Conveyor Scanalyzers combine rapid automated data recording with advanced analytical software and machine learning.

LemnaTec is the global specialist for Conveyor Scanalyzer Solutions that not only save time and labour, but also provide a much broader base of information compared to visual scoring. This technology is dedicated to users who work with individually potted plants and demand for side- and top-view images of their plant material.

  • Plant-to-Sensor
  • Potted plants moving on conveyors
  • Handling conveyor loops for imaging, weighing, watering
  • Storage conveyor lines as growth area
  • Imaging cabinets with advanced illumination and optics
  • Broad range of cameras
  • Conveyor configurations according to application cases
  • Weighing and Watering options
  • Plant carrier re-positioning and randomising

We recommend to record environmental data in the plant growth area, such as temperature, light, or air humidity. We offer recording systems that store the environmental data together with the phenotypic data of the corresponding plants.

 

For more details, download the brochure

conveyor scanalyzer lemnatec greenhouse 
conveyor scanalyzer lemnatec
conveyor scanalyzer lemnatec

PhenoTron

Lemnatec™ PhenoTron

Combined Phenotyping and Growth Cabinet

Portable Analytical Solutions

Lemnatex phenotron

The LemnaTec PhenoTron is a versatile instrument for a broad range of phenotyping applications in laboratories. 

It combines the imaging and image processing capabilities of a LabScanalyzer with the advantages of a climate-controlled growth cabinet. Thus, prime sample types are such that require environmental control during the phenotyping process, such as seeds or seedlings that are observed in continuous time series. Imaging of samples that do not stay continuously in the cabinet is equally possible. Thus, the PhenoTron allows imaging of many different types of biological samples including plants as well as samples in plates:

  • Seedlings and small plants in pots or small trays
  • samples in microtiter plates or petri-dishes, e.g. seeds, leaf disks, insects
  • samples in beakers, e.g. duckweed for ecotoxicology testing
  • detached plant parts, e.g. leaves, fruits, roots, tubers

The core compartment of the LemnaTec PhenoTron consists of a climate controlled growth chamber (15°C to 40°C ± 3°C) with tunable LED light sources. It has up to 16 groups of LEDs in different spectral bands between 350 and 850 nm, which can be controlled independently. Top stereo RGB cameras deliver data for many phenotyping applications. The system is operated via a touch-screen interface with intuitive controls.

PhenoTron configuration
PhenoTron cabinetH: 870 mm
W: 880 mm
D: 680 mm
Temperature controlControl of air temperature: 15°C to 40°C ± 3°C
RGB cameraVisible light imaging for count, size, morphology and colour of the objects

HyperAIxpert

Lemnatec HyperAIxpert

Portable Analytical Solutions

lemnatec phenocenter hyperaixpert
hyperaixpert logo

The most flexible multi-sensor laboratory phenotyping system for Arabidopsis, seedlings, petri dishes, MTPs, and many more sample types.

  • Rapid digital analysis of phenotypic traits
  • Large set of sensor options
  • Advanced analytical software and machine learning
  • Standardized and repeatable data acquisition
  • High throughput
  • Pots, trays, dishes, MTPs, beakers
  • Adaptors for many sample types
  • Up to 40 cm sample height with manual loading
  • Up to 20 cm with automated sample loader

Features:

  • Experiment-driven design
  • High-resolution phenotyping
  • Comprehensive machine-learning based analytical software
  • All major phenotyping cameras and sensors available
  • Configurable multi-sensor imaging
  • Automatic sample loading available
  • Integrable into climate chambers

SeedAIxpert

Lemnatec SeedAIxpert

Portable Analytical Solutions

seed aixpert
seed aixpert

The fastest digital seed testing system measuring seed, germination, and seedling emergence quality.

  • For paper-based germination assays and seedling emergence tests
  • Save time and labor in seed testing
  • Overcome inconsistent assessments by digitizing the inspection
  • Reproducible and standardizable through unified imaging and analysis
  • The digital seed testing system for breeders, testing labs, and researchers

Features:

  • Reliable technology that makes seed testing easy
  • Image acquisition, storage, analysis, and retrieval
  • Image annotation, metadata recording
  • Metadata and annotation directly linked to image
  • Advanced image processing algorithms including machine learning
  • Structured image file administration system
  • Easy export of images, data, and analyses
  • Intuitive graphical user interface
  • High-resolution industrial camera
  • Artificial intelligence enables seed and seedling quality assessments

For more details, download the brochure

PhenoAIxpert

Lemnatec PhenoAIxpert

Portable Analytical Solutions

lemnatec phenoaixpert logo
lemnatec phenoaixpert

The versatile phenotyping system for laboratories – your entry to the phenotyping world.

  • For many sample types in plant research, breeding and beyond
  • Save time and labor in phenotyping
  • Application-oriented analytical workflows
  • Reproducible and standardizable through unified image and information storage, and analyses
  • The laboratory phenotyping system is available in three models – PhenoAIxpert, PhenoAIxpert Pro, PhenoAIxpert Root

Features:

  • Reliable technology, advanced image processing
  • Image acquisition, storage, and analysis
  • Image processing algorithms, optional machine learning
  • Metadata, annotation, and analysis directly linked to image
  • Structured image file administration system

For more details, download the brochure

ImageAIxpert

Lemnatec ImageAIxpert

Portable Analytical Solutions

lemnatec imageaixpert
lemnatec imageaixpert logo

The universal laboratory documentation imager that reliably captures, stores and retrieves images of laboratory samples.

  • For many sample types in biology and beyond
  • Save time and labor in documentation tasks
  • Overcome inconsistent image acquisition and storage
  • Reproducible and standardizable through unified image and information storage
  • The documenting system that allows upgrading to a fully-functional phenotyping system

Features:

  • Reliable technology that makes documenting easy
  • Image acquisition, storage, and retrieval
  • Image annotation, metadata recording
  • Metadata and annotation directly linked to image
  • Structured image file administration system
  • Easy export of images and data
  • Intuitive graphical user interface12 Megapixel industrial camera

Key Applications for the ImageAIxpert

plant phenotypes, hyperspectral imaging, phenotyping

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