Analyte Ions
Analyte Ions - Related Videos
08:03
Multi-analyte Biochip (MAB) Based on All-solid-state Ion-selective Electrodes (ASSISE) for Physiological Research
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Cited by 3 •
2013
All-solid-state ion-selective electrodes (ASSISEs) constructed from a conductive polymer (CP) transducer provide several months of functional lifetime in liquid media. Here, we describe the fabrication and calibration process of ASSISEs in a lab-on-a-chip format. The ASSISE is demonstrated to have maintained a near-Nernstian slope profile after prolonged storage in complex biological media.
08:52
Ion-Exchange Chromatography
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Ion-exchange chromatography is a type of chromatography that separates analytes based on charge. A column is used that is filled with a charged stationary phase on a solid support, called an ion-exchange resin. Strong cation-exchange chromatography preferentially separates out cations by using a negatively-charged resin while strong anion-exchange chromatography preferentially selects out anions by using a positively-charged...
10:41
Three-electrode Coin Cell Preparation and Electrodeposition Analytics for Lithium-ion Batteries
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Cited by 18 •
2018
Three-electrode cells are useful in studying the electrochemistry of lithium-ion batteries. Such an electrochemical setup allows the phenomena associated with the cathode and anode to be decoupled and examined independently. Here, we present a guide for construction and use of a three-electrode coin cell with emphasis on lithium plating analytics.
09:51
Sample Preparation for Analytical Characterization
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2023
Source: Laboratory of Dr. B. Jill Venton - University of Virginia Sample preparation is the way in which a sample is treated to prepare for analysis. Careful sample preparation is critical in analytical chemistry to accurately generate either a standard or unknown sample for a chemical measurement. Errors in analytical chemistry methods are categorized as random or systematic. Random errors are errors due to change and are often due to noise in instrument. Systematic errors are due to...
05:40
Fabricating Cotton Analytical Devices
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2016
To investigate simple fabrication approaches for multiple assay needs, we created a fluid-absorbing channel system made of cotton material. This device was used to establish a multiple detection platform, and solve contamination issues that commonly affect lateral flow-based biomedical devices, for clinical urinalysis of nitrite, total protein, and urobilinogen.
FAQs
The measurement approach depends on the property that best distinguishes the target ion. Charge can support electrochemical recognition, mobility can enable separation, mass-to-charge ratio can support spectrometric detection, and electrochemical activity can produce a detector response. Selecting the relevant property helps convert differences among ions into measurable signals and improves identification within a complex sample.
Signal intensity is interpreted as an indicator of ion amount after the measurement system responds to the target species. A stronger or weaker detector response can therefore support concentration determination, provided the response is related appropriately to known standards. This relationship allows qualitative identification to be extended into quantitative analytical chemistry.
Similar ions can be distinguished by exploiting differences in mobility, mass-to-charge ratio, charge-related behavior, or electrochemical activity. Analytical systems may separate the ions before detection, convert them into measurable forms, or use selective recognition by an electrode or spectrometer. These strategies reduce confusion between target ions and chemically similar species.
A typical workflow begins with the sample and selects a property or reaction that can reveal the target ion. The ions may then be separated, converted into a measurable signal, or selectively recognized by an electrode, spectrometer, or related detector. The resulting response is interpreted to identify the ion and estimate its amount.
Calibration connects detector response with ion amount, making concentration estimates more meaningful than an unreferenced signal alone. Interference control limits responses from other species that could resemble the target ion or alter its measurement. Together, these practices improve accuracy, support reliable comparisons among samples, and help distinguish the intended analyte from chemically similar ions.
These measurements support acid-base analysis, water-quality monitoring, pharmaceutical testing, environmental studies, and process control. In each setting, the analyst can use ion responses to examine composition, purity, or concentration. The broad range of applications reflects the usefulness of charge-based, mobility-based, mass-based, and electrochemical measurement strategies across different types of samples.
Analyte ion analysis can reveal whether selected ions are present and can help estimate their concentrations. Those results contribute to judgments about sample composition and purity, while repeated measurements can support monitoring of environmental or industrial processes. In chemistry, the approach also provides a practical way to investigate acid-base behavior and other ion-related changes.