Low-cost Color Sensor for Automating Analytical Chemistry Processes

2021 ◽  
Author(s):  
Shreya Malkurthi ◽  
Kirthi Vignan Reddy Yellakonda ◽  
Anushka Tiwari ◽  
Aftab M. Hussain
Keyword(s):  
Analytical Chemistry ◽  
Low Cost ◽  
Color Sensor

Development of Low Cost and Portable Colorimeter Using TCS 3200 Color Sensor

2021 ◽  
Author(s):  
Akshay Dhawan ◽  
Pauroosh Kaushal ◽  
R. P. Mudhalwadkar
Keyword(s):  
Low Cost ◽  
Color Sensor

scholarly journals NEW, GREEN AND MINIATURIZED ANALYTICAL METHOD FOR DETERMINATION OF CEFADROXIL MONOHYDRATE IN CAPSULES

2019 ◽  
Vol 3 (1) ◽  
pp. 23-28 ◽  
Author(s):  
Bianca Marco ◽  
Ana Kogawa ◽  
Hérida Salgado
Keyword(s):  
Analytical Chemistry ◽  
Standard Sample ◽  
Low Cost ◽  
Visible Region ◽  
Hplc Method ◽  
Minimal Amount ◽  
Green Analytical Chemistry ◽  
Color Reagent ◽  
Routine Quality Control

Cefadroxil, an oral antimicrobial, presents few techniques optimized for the reduction of solvents and toxic residues and/or non-use of them. So, a quantitative, new and miniaturized method for determination of cefadroxil monohydrate in capsules has been developed and validated by spectrophotometric method in the visible region according to the international guidelines. The analyzes were performed using microplates containing 96 wells, 1 % of phenolphthalein and sodium hydroxide 0.1 M as reagent at 552 nm. The method was (i) linear in the range of 15-115 µg mL-1, (ii) selective when comparing standard, sample, adjuvants and color reagent, (iii) precise with deviations below 4 %, (iv) accurate when comparing the proposed method with the HPLC method, (v) robusts by making small and deliberate modifications to the method, (vi) besides being fast, low cost, eco-friendly and generates minimal amount of waste. The method can be applied to the routine quality control of cefadroxil monohydrate in capsules and an effective and accessible alternative that contemplates the concepts of current and sustainable green analytical chemistry.

scholarly journals A Fast, Straightforward and Inexpensive Method for the Authentication of Baijiu Spirit Samples by Fluorescence Spectroscopy

Beverages ◽  
2021 ◽  
Vol 7 (3) ◽  
pp. 65
Author(s):  
Rachel L. Burns ◽  
Raegan Alexander ◽  
Liliya Snaychuk ◽  
John C. Edwards ◽  
Neil Fitzgerald ◽  
...  
Keyword(s):  
Analytical Chemistry ◽  
North America ◽  
Fluorescence Spectroscopy ◽  
Emission Spectroscopy ◽  
Low Cost ◽  
Fluorescence Emission ◽  
Wide Distribution ◽  
Inexpensive Method ◽  
Scientific Methods ◽  
Price Differences

The Chinese spirit baijiu is currently the world’s bestselling spirit, with more than ten billion liters sold in 2018. This is a figure that puts its sales higher than whiskey, vodka, gin, and tequila combined. The multitude of baijiu varieties available in the market differ in several ways ranging from aging to the traditional artisanship involved in producing the final spirit to several other features, including the rarity of the bottle. A result of these differences is a wide distribution of prices for the various baijiu products. Consequently, a single bottle of baijiu can cost anywhere from a few dollars, up to thousands of US dollars. The price differences among the various baijiu spirits necessitate the existence of reliable scientific methods that can efficiently differentiate and authenticate the qualities of baijiu spirits. In addition, the existence of such methods facilitates the prevention of counterfeit sales of the final product. Considering this, we introduce an analytical chemistry method that distinguishes amongst different baijiu spirits based on fluorescence spectroscopy. Its attributes include the low cost and convenience that allows analysis either before or while the spirit is in the market. Our work herein focuses on the analysis of thirty different varieties of baijiu spirits from six different distilleries from East Asia and North America by fluorescence emission spectroscopy, which is associated to the price of the product. For the analysis, we employed a HORIBA FLUOROLOG 3 (HORIBA—Jobin Yvon) spectrometer. Major advantages of this method include the low cost, as no consumables except a quartz reusable cuvette are required, the minimal waste, and finally the quick processing of data.

scholarly journals Predicting Soil Organic Carbon and Total Nitrogen at the Farm Scale Using Quantitative Color Sensor Measurements

Agronomy ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 212 ◽  
Author(s):  
Roxanne Stiglitz ◽  
Elena Mikhailova ◽  
Julia Sharp ◽  
Christopher Post ◽  
Mark Schlautman ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Total Nitrogen ◽  
Low Cost ◽  
Rapid Assessment ◽  
Soil Health ◽  
Sensor Technology ◽  
P Value ◽  
Color Sensor ◽  
Farm Scale

Sensor technology can be a reliable and inexpensive means of gathering soils data for soil health assessment at the farm scale. This study demonstrates the use of color system readings from the Nix ProTM color sensor (Nix Sensor Ltd., Hamilton, ON, Canada) to predict soil organic carbon (SOC) as well as total nitrogen (TN) in variable, glacial till soils at the 147 ha Cornell University Willsboro Research Farm, located in Upstate New York, USA. Regression analysis was conducted using the natural log of SOC (lnSOC) and the natural log of TN (lnTN) as dependent variables, and sample depth and color data were used as predictors for 155 air dried soil samples. Analysis was conducted for combined samples, Alfisols, and Entisols as separate sample sets and separate models were developed using depth and color variables, and color variables only. Depth and L* were significant predictors of lnSOC and lnTN for all sample sets. The color variable b* was not a significant predictor of lnSOC for any soil sample set, but it was for lnTN for all sample sets. The lnSOC prediction model for Alfisols, which included depth, had the highest R2 value (0.81, p-value < 0.001). The lnSOC model for Entisols, which contained only color variables, had the lowest R2 (0.62, p-value < 0.001). The results suggest that the Nix ProTM color sensor is an effective tool for the rapid assessment of SOC and TN content for these soils. With the accuracy and low cost of this sensor technology, it will be possible to greatly increase the spatial and temporal density of SOC and TN estimates, which is critical for soil management.

scholarly journals Imprinted plasmonic measuring nanocylinders for nanoscale volumes of materials

Nanophotonics ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 167-176 ◽  
Author(s):  
Jinfeng Zhu ◽  
Xizhao Chen ◽  
Yinong Xie ◽  
Jun-Yu Ou ◽  
Huanyang Chen ◽  
...  
Keyword(s):  
Analytical Chemistry ◽  
Visible Light ◽  
Optical Measurement ◽  
Low Cost ◽  
Soft Materials ◽  
Volume Changes ◽  
Fast Measurement ◽  
Biomedical Sensing ◽  
Material Volume ◽  
Non Destructive

AbstractOptical measurement of materials at the nanoscale is important for nanotechnology. Various plasmonic nanorulers have been studied for measuring nanoscale distance and orientation of materials, but they lack the capability to contain and measure nanoscale volumes, especially for liquid or soft materials. Here, we demonstrate the use of imprinted plasmonic volumetric nanocylinders, which act as nanoscale graduated cylinders and facilitate nanomaterial measurement via visible light. Our theoretical and experimental achievements illuminate a promising method for non-destructive, low-cost and fast measurement of material volume changes at the nanoscale, which will benefit the fields of analytical chemistry, nanofabrication and biomedical sensing.

Development of a low-cost color sensor for biomedical applications

2019 ◽  
pp. 15-29
Author(s):  
Pratyush K. Patnaik ◽  
Paresh Mahapatra ◽  
Dibyajyoti Biswal ◽  
Suraj K. Nayak ◽  
Sachin Kumar ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Low Cost ◽  
Color Sensor

scholarly journals Rapid Analysis of Milk Using Low-Cost Pocket-Size NIR Spectrometers and Multivariate Analysis

Foods ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1090 ◽  
Author(s):  
Jordi Riu ◽  
Giulia Gorla ◽  
Dib Chakif ◽  
Ricard Boqué ◽  
Barbara Giussani
Keyword(s):  
Analytical Chemistry ◽  
Near Infrared ◽  
Multivariate Calibration ◽  
Low Cost ◽  
Analytical Data ◽  
Acquisition Time ◽  
Green Analytical Chemistry ◽  
Data Acquisition Time ◽  
Commercial Milk ◽  
New Generation

The miniaturisation of analytical devices, reduction of analytical data acquisition time, or the reduction of waste generation throughout the analytical process are important requirements of modern analytical chemistry, and in particular of green analytical chemistry. Green analytical chemistry has fostered the development of a new generation of miniaturized near-infrared spectroscopy (NIR) spectrometric systems. However, one of the drawbacks of these systems is the need for a compromise between the performance parameters (accuracy and sensitivity) and the aforementioned requirements of green analytical chemistry. In this paper, we evaluated the capabilities of two recently developed portable NIR instruments (SCiO and NeoSpectra) to achieve a rapid, simple and low-cost quantitative determination of commercial milk macronutrients. Commercial milk samples from Italy, Switzerland and Spain were chosen, covering the maximum range of variability in protein, carbohydrate and fat content, and multivariate calibration was used to correlate the recorded spectra with the macronutrient content of milk. Both SCiO and NeoSpectra can provide a fast and reliable analysis of fats in commercial milk, and they are able to correctly classify milk according to fat level. SCiO can also provide predictions of protein content and classification according to presence or absence of lactose.

scholarly journals Metal nanoparticles-based nanoplatforms for colorimetric sensing: A review

2020 ◽  
Vol 40 (1) ◽  
pp. 1-11
Author(s):  
Ning Xu ◽  
Shuang Jin ◽  
Li Wang
Keyword(s):  
Analytical Chemistry ◽  
Metal Nanoparticles ◽  
Low Cost ◽  
Colorimetric Detection ◽  
Colorimetric Method ◽  
High Sensitivity ◽  
Detection Methods ◽  
Practical Application ◽  
Colorimetric Sensing ◽  
Research Hotspots

Abstract With the progress of analysis technology and nanotechnology, colorimetric detection has become one of the research hotspots in the field of analytical chemistry. Compared with traditional detection methods, the colorimetric method has many advantages, such as high sensitivity, good selectivity, convenience and fast, as well as low cost. In recent years, metal nanoparticles have been introduced into colorimetry, making the research and application of colorimetry develop rapidly. In this work, we summarize the usual colorimetric detection methods based on metal nanoparticles-based nanozymes and their applications in the last five years. We hope that this work will help readers understand the mechanism and practical application value of nanozyme-based colorimetric biosensors. Meanwhile, this work may give some hints and references for future colorimetric detection research to promote the application and development of nanozyme-based colorimetry in biomedical and environmental analysis.

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