Halosilane Sampling Vortex Hydrolysis System
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Solution Overview
Problem
Direct determination of low concentrations of metal contaminants in halosilanes using ICPMS or GFAA is challenging due to the extreme reactivity of halosilanes with water vapor, leading to instrument corrosion and matrix suppression, which complicates accurate measurement.
Innovation Solution
A system and method involving a container with a receiving liquid, such as hydrofluoric acid, that is rotated to create a vortex, allowing halosilane samples to be introduced through an inert sample tube, preventing polymerization and allowing for effective hydrolysis without the need for concentric tubing or inert gas shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If halosilane samples are introduced directly into analytical instruments, then measurement of metal contaminants can be performed, but instrument corrosion and matrix suppression occur due to extreme reactivity with water vapor
Solution Approach 1:
The patent introduces an intermediary substance (hydrofluoric acid receiving liquid) between the halosilane sample and the analytical instrument. This intermediary reacts with the halosilane to form non-volatile products, preventing the halosilane from reaching the instrument while still allowing metal contaminants to be measured after appropriate processing
Solution Approach 2:
The patent extracts the harmful halosilane component from the sample stream through chemical reaction with hydrofluoric acid, separating it from the metal contaminants that need to be measured. This extraction prevents the halosilane from causing corrosion while preserving the analytes of interest
2Object-affected harmful factors
If halosilane samples are hydrolyzed in HF solution, then instrument corrosion is prevented, but sample delivery line clogging occurs due to rapid reaction and polymerization
Solution Approach 1:
The patent introduces dynamic elements (peristaltic pumping, controlled flow rates) to manage the rapid chemical reaction between halosilane and HF. The system dynamically adjusts flow parameters to ensure complete reaction while preventing polymerization-induced clogging through continuous motion and controlled residence time
Solution Approach 2:
The patent maintains continuous flow and reaction conditions to prevent the buildup of polymeric materials that would cause clogging. The continuous peristaltic pumping ensures constant movement of reactants through the delivery system, preventing stagnant zones where polymerization could occur
3Stability of the object's composition
If concentric tubing with inert gas shielding is used, then polymerization is prevented, but device complexity and operational difficulty increase
Solution Approach 1:
The patent removes the complex concentric tubing structure entirely and extracts only the essential function of preventing polymerization through a simpler approach: rapid dilution and reaction in the receiving liquid. The inert gas shielding is replaced by the bulk HF solution that provides both reaction medium and protective environment
Solution Approach 2:
The receiving liquid serves multiple functions simultaneously: it acts as the hydrolysis reagent, the dilution medium, the protective environment preventing polymerization, and the transport vehicle to the instrument. This multi-functionality eliminates the need for separate inert gas shielding systems
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 safe and accurate hydrolysis of halosilane samples, preventing instrument corrosion and matrix interference, allowing for reliable analysis of metal contaminants by ensuring rapid dispersion and preventing reactant buildup, thus facilitating accurate measurement of metal contaminants.
Implementation Method 1
The actuator can be configured to rotate the container, thereby inducing a vortex in the receiving liquid
Implementation Method 2
It is noted that the system architecture and methodology described herein can be used to hydrolyze any reactive substance by introduction into a vortex induced in a receiving liquid
Data Source
AI summary
This disclosure is directed to a system and method relevant to sampling halosilanes or other water-reactive samples. In embodiments, a system for hydrolyzing samples includes a container with a receiving liquid (e.g., an HF solution) contained therein and an actuator coupled with the container. The actuator can be configured to rotate the container, thereby inducing a vortex in the receiving liquid. The system further includes a sample tube configured to direct a halosilane sample into the vortexed receiving liquid. The sample tube can be oriented to release the sample in a flow direction of the vortexed receiving liquid.