Variable Sample Concentration for Sub-ppb X-ray Analysis
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Solution Overview
Problem
Current analytical technologies face challenges in achieving sub-ppb detection levels for trace elements like Cadmium in water streams, requiring improved sample handling and measurement techniques to meet stringent environmental regulations.
Innovation Solution
The method involves active, variable concentration of samples using a measurement marker to concentrate analytes, allowing for measurable concentration of lower-level analytes through controlled heating and marker-guided extrapolation, compatible with XRF analysis techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional analytical techniques are used for trace element measurement, then the measurement process is straightforward, but the detection limit cannot reach sub-ppb levels
Solution Approach 1:
The patent applies preliminary action by performing sample concentration before the actual measurement process. The system automatically concentrates the sample stream to achieve sub-ppb detection levels, preparing the sample in advance so that the subsequent measurement can be performed with standard analytical techniques.
Solution Approach 2:
The patent introduces an intermediary concentration system between the sample stream and the measurement device. This intermediary device automatically concentrates the analyte in the sample stream, enabling detection at sub-ppb levels without requiring complex manual sample preparation or modification of the measurement instrument itself.
2Measurement precision
If manual sample preparation is used to achieve sub-ppb detection levels, then detection precision improves, but time consumption and operational complexity increase
Solution Approach 1:
The system applies self-service by implementing automatic sample concentration that requires minimal human intervention. The concentration process is performed automatically by the system itself, eliminating the need for manual sample preparation steps and significantly reducing the time required to achieve sub-ppb detection precision.
Solution Approach 2:
The patent enables continuous sample concentration and measurement without interruption. The automatic concentration system operates continuously on the sample stream, maintaining uninterrupted analysis and eliminating the time losses associated with manual sample preparation and handling.
3Measurement precision
If sample concentration is performed to enhance detection capability, then measurement sensitivity improves, but the risk of analyte loss or contamination increases
Solution Approach 1:
The system applies feedback by continuously monitoring the concentration process and adjusting parameters to maintain analyte integrity. The feedback mechanism ensures that concentration is performed optimally without causing analyte loss or contamination, thereby maintaining both measurement sensitivity and reliability.
Solution Approach 2:
The patent carefully controls parameter changes during the concentration process, such as temperature, flow rate, and concentration factors. By precisely managing these parameters, the system achieves enhanced measurement sensitivity while preventing analyte degradation or contamination that could compromise reliability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enables accurate measurement of analytes at higher concentrations, which can be extrapolated to determine their original sub-ppb levels, enhancing detection precision and meeting regulatory requirements for trace element quantification.
Implementation Method 1
active, variable concentration of samples using a measurement marker to concentrate analytes, allowing for measurable concentration of lower-level analytes through controlled heating and marker-guided extrapolation
Implementation Method 2
x-ray fluorescence (XRF) is an analytical technique by which a substance is exposed to a beam of x-rays to determine, for example, the presence and concentrations of certain components. In XRF, at least some of the elemental constituents of the substance exposed to x-rays can absorb x-ray photons and produce characteristic secondary fluorescence.
Data Source
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AI summary
A sample handling apparatus / technique / method for a material analyzer, which provides active, variable concentration of a sample, using a measurement marker introduced into the sample, to measurably concentrate an analyte in a liquid (e.g., water) sample. Active, variable concentration allows otherwise lower level analytes to be concentrated in a measureable way. This enables measurements at higher (e.g., concentrated) levels, which can be extrapolated to obtain their lower, original levels based on the concentration level - measured using the introduced marker as a guide. The sample handling apparatus may be used in combination with an optic-enabled x-ray analyzer, the x-ray analyzer including an x-ray engine with an x-ray excitation path and an x-ray detection path, usable during both during the concentration and analyte measurement.