TCDuino: Development of an Inexpensive Microcontroller-Based Thermal Conductivity Detector for Quantification of Gas Mixtures

Owen, Bradley A.; Starvaggi, Nicholas; Mensah, Taylor I.; Mills, Isaac N.

doi:10.1021/acs.jchemed.9b00977

Cited by 6 publications

(8 citation statements)

References 12 publications

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“…To demonstrate the versatility of our GC system, we incorporated a commercially available TCD resistor pair for the detection of a noble gas. 10 Figure 4a shows the gas chromatogram of a gas mixture of argon and ethane. The TCD sensor is set up as a Wheatstone Bridge circuit, and the voltage difference between the reference and analyte gas is measured with the Arduino board (Figure 4b).…”

Section: ■ Applications Of the Gc Systemmentioning

confidence: 99%

“…The flammable gas sensor utilized in this study has FID-like behavior that is suitable for the detection of many hydrocarbon gases; however, noble and permanent gases are also common analytes for a GC study. To demonstrate the versatility of our GC system, we incorporated a commercially available TCD resistor pair for the detection of a noble gas Figure a shows the gas chromatogram of a gas mixture of argon and ethane.…”

Section: Applications Of the Gc Systemmentioning

confidence: 99%

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Development of a Low-Cost and Versatile Gas Chromatography System for Teaching Analytical Chemistry

et al. 2021

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This study presents a low-cost Arduino-based gas chromatography system that is suitable for teaching analytical chemistry in an undergraduate laboratory. The gas chromatography system is built with commonly available materials with a total cost less than $100. A Python code is also provided as a user interface that will record data and display the results in real-time. The functionalities of the gas chromatography system are demonstrated with the detection of in-house natural gas, product gases from a CO2 reduction, and a noble gas. Step-by-step instructions for building the gas chromatography system and detailed explanation of the Python code are provided in the Supporting Information for this paper. The goal of this project is to provide a low-cost and versatile GC platform where undergraduate students can modify each individual component of a GC and study the underlying principle of separation science in analytical chemistry.

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Section: ■ Applications Of the Gc Systemmentioning

confidence: 99%

Section: Applications Of the Gc Systemmentioning

confidence: 99%

Development of a Low-Cost and Versatile Gas Chromatography System for Teaching Analytical Chemistry

et al. 2021

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“…Robotic laboratory platforms are capable of performing complex tasks such as automated chemical experiments. − Recent publications in this Journal have demonstrated a variety of ways to implement such modern technologies into undergraduate chemistry curricula, for example, custom experiment automation with microcontrollers (Arduino or Raspberry Pi) − and 3D printing. − The performance of many intelligent devices (automatic instruments and robots) requires acquisition and processing of complex visual sensory input. Such processing commonly employs certain elements of artificial intelligence and widely relies on machine learning methods. − Computer vision (CV) is a technology suitable for acquisition, processing, and analysis of visual inputs (e.g., digital images) and, therefore, is an important integral aspect of modern laboratory automation.…”

Section: Introductionmentioning

confidence: 99%

“…A particular challenge is that, unfortunately, chemistry majors are not commonly exposed to advanced (and sometimes even basic) topics in computer programming and this hinders their efficient usage of computer technologies mentioned above. Thus, this report along with previous publications in this Journal − aim to fill this gap at least partially and provide a foundation for instructors to cover these topics in undergraduate laboratories. The described technology is based on free, open-source Python code.…”

Section: Introductionmentioning

confidence: 99%

Computer Vision in Chemistry: Automatic Titration

Kosenkov

2021

J. Chem. Educ.

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A novel technology that employs computer vision (CV) to carry out an automatic titration experiment is presented. The experiment is designed to facilitate understanding of the basics of the CV technology and its application in chemistry among undergraduate students. The standard chemical procedure of titration has been chosen, since it is well-known to students who completed general chemistry or similar foundation chemistry courses. A significant advantage of CV-based automation is the use of open-source software and readily available electronic devices, as no expensive specialized equipment or proprietary software is required. The experiment can be performed remotely, either live online or with prerecorded videos. The reported technology is accessible to virtually any educational institution as well as to individuals. The proposed technology provides affordable and safe means for remote execution of titration experiments for students with disabilities. Therefore, the proposed experiment is suitable for traditional laboratory instruction as well as remote synchronous or asynchronous course delivery which gained practical importance during the COVID-19 pandemic. Finally, the proposed CV-based automation opens a new realm of opportunities for rethinking traditional chemistry procedures where computer vision is used to improve performance of standard laboratory instruments and techniques.

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“…Hence, a simple, low-cost, and open-source syringe pump is desirable for chemical and biochemical laboratories. Recently, the use of an available, low-cost, and user-friendly electronic board like an Arduino microcontroller has been increased greatly in the education of students 5 and the fabrication of laboratory equipment/apparatus such as an electronic calorimeter, 6 thermal conductivity detector, 7 potentiostat, 8 and magnetic stirrer. 9 Some syringe pumps have recently been reported in the literature for Raspberry(Pi) and Arduino-based syringe pumps that used three-dimensional (3D) printers and complex mechanical components (motor mount, motor shaft coupling, guide rod, screw-driven stage, and linear ball bearing) for the fabrication of the syringe pump.…”

Section: ■ Introductionmentioning

confidence: 99%

Using the Recycled Parts of a Computer DVD Drive for Fabrication of a Low-Cost Arduino-Based Syringe Pump

Cheri

2021

J. Chem. Educ.

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The accurate and precise transport of the small amounts of the liquid by the syringe pump is widely used in many fields. In this paper, an Arduino-based syringe pump is fabricated using the computer DVD (digital versatile disc) drive. For the fabrication of the syringe pump, low-cost electronic components such as an Arduino microcontroller, a stepper motor, a stepper motor driver, and a display are used. The tray-loading mechanism of the computer DVD drive (close/open mechanism of the tray for inserting/removing DVD) was used for the injection process. To provide the necessary force for the precise and accurate movement of the plunger of the syringe, we replaced the DC motor of the computer DVD drive with the stepper motor and the stepper motor driver. An Arduino code was developed to control the infusion process. Depending on the syringe dimension (inner diameter and barrel length), the stepper motor (angular resolution), and the motor driver (microstepping mode), the code can be modified by using the Arduino software. The syringe pump infuses the water in the flow rates from 0.005 (mL/min) to 1 (mL/min) with a maximum of 10 μL difference between the mean measured volume and the infused volume. The fabricated syringe pump does not require the complex mechanical components that are used in conventional syringe pumps. The project provides instructions for building and testing a syringe pump and enables the students to fabricate a low-cost, open-source syringe pump using the recycled parts of the computer DVD drive for less than $30. As a result, the students will increase their hardware and software skills by completing the project.

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TCDuino: Development of an Inexpensive Microcontroller-Based Thermal Conductivity Detector for Quantification of Gas Mixtures

Cited by 6 publications

References 12 publications

Development of a Low-Cost and Versatile Gas Chromatography System for Teaching Analytical Chemistry

Development of a Low-Cost and Versatile Gas Chromatography System for Teaching Analytical Chemistry

Computer Vision in Chemistry: Automatic Titration

Using the Recycled Parts of a Computer DVD Drive for Fabrication of a Low-Cost Arduino-Based Syringe Pump

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