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Journal articles on the topic 'PH Value Measurement'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

MARUYAMA, Hisataka, and Fumihito ARAI. "Fluorescent pH Measurement without Initial pH Value Using Reference Sensor for Local Environment Measurement." Abstracts of the international conference on advanced mechatronics : toward evolutionary fusion of IT and mechatronics : ICAM 2021.7 (2021): OS1–1. http://dx.doi.org/10.1299/jsmeicam.2021.7.os1-1.

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2

Chiang, Chia Chin, Cheung Hwa Hsu, and Chao Hui Ou. "pH Value Detection with CLPFG Sensor." Applied Mechanics and Materials 284-287 (January 2013): 2157–61. http://dx.doi.org/10.4028/www.scientific.net/amm.284-287.2157.

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Detection of pH value plays an important role in many fields; the precise measurement of pH value is very useful in Living systems, Chemistry and Biochemistry. The purpose of this paper is to measure pH value in solution by using Corrugated Long Period Fiber Grating (CLPFG). The CLPFG element is highly sensitive to refractive index changes, and with appropriate design geometry; a variety of target molecules can then be detected. Optical fiber Corrugated Long Period Gratings are designed to act as spectral loss elements that couple with a discrete wavelength out of the optical fiber as a functi

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3

Basri, Muhammad, and Joi Alfreddi Surbakti. "Rancang Bangun Akuarium Portable Menggunakan Teknologi Internet Of Things Untuk Budidaya Ikan Hias." Jurnal Teori dan Aplikasi Fisika 11, no. 01 (2023): 47–54. http://dx.doi.org/10.23960/jtaf.v10i2.3146.

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Portable aquarium designed with an automation system for controlling pH levels and temperature information. pH levels are measured using a pH sensor E-201-C and temperature is measured with a DS18B20 sensor. The pH control process is carried out by adding liquid pH up and pH down and is realized with a solenoid valve. The purpose of making this portable aquarium is to control the pH value of the water in the aquarium and provide information about the water temperature. Into this portable aquarium system have been inputted standard values of pH and temperature for each type of fish. This system

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4

Zhao, Xue Liang, Yun Shi, Kang Li, and Guang Hua Wei. "Research of pH Value Temperature Compensation Module Based on the Least Squares Method." Advanced Materials Research 945-949 (June 2014): 2121–25. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.2121.

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The high precise pH automatic monitoring measurement is designed based on MSC1210 MCU and pH sensor. To eliminate the effect of temperature on the measurement results, a pH value temperature compensation module is established using the least Squares Method to analyze the linear relationship between pH and voltage. The results show that, the automatic monitoring measurement possesses broad application prospects with the advantages of ultra-low power consumption, good stability and high precision.

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Souza, V., Alberto Pires Ordine, I. C. S. Fraga, et al. "Effect of NaCl and HCl concentrations on primary pH measurement for the certification of standard materials." Brazilian Archives of Biology and Technology 49, spe (2006): 79–86. http://dx.doi.org/10.1590/s1516-89132006000200013.

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pH is an important parameter to control the production of food, medicine, petrochemical products and others. Thus, standard reference materials used to calibrate pH meters are necessary to guarantee reliability of the measurements. The Chemical Metrology Division (Dquim) of the National Metrology Institute of Brazil (Inmetro) has as one of its missions the certification of standard reference materials. In the case of pH, it will be done by the pH primary measurement system of Inmetro, in operation at Dquim since 2003. The buffer solution of nominal pH value equal to 6.865 will be the first to

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KITANO, Hiroshi, and Hideki UCHIYAMA. "Precise measurement of pH value of equimolal phosphate buffer solution." Bunseki kagaku 35, no. 12 (1986): T130—T135. http://dx.doi.org/10.2116/bunsekikagaku.35.12_t130.

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Zulfikar, Zulfikar, Munawarah Munawarah, and Tholib Hariono. "Test of Land Potential Sensor Tools Based on Biomass on Measurements of Temperature, Moisture, and Soil pH and Their Relationship to the Biomass Values in Marginal Land." BIO Web of Conferences 91 (2024): 01027. http://dx.doi.org/10.1051/bioconf/20249101027.

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This research aims to test the accuracy of biomass-based land potential sensor devices. The indicators tested were the results of measurements of growing environmental conditions including temperature, humidity and soil pH, as well as measurements of tree biomass. The analysis technique is carried out in 2 stages, namely the comparative measurement test stage and the biomass calculation application test in the field. The research results show that the average measurement of pH = 5.7493, humidity = 88.0616% and temperature = 27.016ºC is generally not significantly different at the 95% t-confide

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Geffert, Anton, Jarmila Geffertova, and Michal Dudiak. "Direct Method of Measuring the pH Value of Wood." Forests 10, no. 10 (2019): 852. http://dx.doi.org/10.3390/f10100852.

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A direct method of measuring the pH value of wood substance is proposed in the paper. The achieved results were completed by determining the pH value on the wood surface using the contact method. Moreover, the results were compared to the results achieved using the indirect methods to determine the pH value in cold water, as well as hot water, extract of wood. Using the direct method for measuring the pH value in drilled fresh sawdust, the pH value of beech was 5.11, of birch was 5.29, of alder was 4.88, and of maple was 4.65. Following the achieved results, the possibility to measure the pH v

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9

Louis, K. C., S. H. F. W. Abdul Hamid, R. Raffay, and A. F. Omar. "Specialized Colorimeter for Phenol red pH Measurement." Journal of Physics: Conference Series 2411, no. 1 (2022): 012020. http://dx.doi.org/10.1088/1742-6596/2411/1/012020.

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Abstract The phenol red is commonly used in cell culture medium as visual pH indicator by changing its color from darker red color to the orange-yellowish color as the pH is changing from neutral to acidic level. The color change of phenol red is hardly to be determined by using naked eyes that will be interpreted differently by different person. Thus, this study is executed to develop a specialized colorimeter for phenol red pH measurement by using Raspberry Pi as a microcontroller unit, green LED as a light source and photodiode in tandem with capacitor as a light sensor. The Raspberry Pi ca

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10

Lilia wati dewi pratami, Her Gumiwang Ariswati, and Dyah Titisari. "Effect of Temperature on pH Meter Based on Arduino Uno With Internal Calibration." Journal of Electronics, Electromedical Engineering, and Medical Informatics 2, no. 1 (2020): 23–27. http://dx.doi.org/10.35882/jeeemi.v2i1.5.

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pH Meter is a device used to express the level of acidity or basicity possessed by a substance or solution. Normal pH has a value of 7 while the pH value> 7 indicates that the substance has alkaline properties while the pH value <7 indicates acidic properties. pH 0 shows a high degree of acidity, and pH 14 shows the highest degree of alkalinity. pH Meter reads the pH and temperature values in a sample. The author uses glass electrodes as a pH sensor, DS18B20 as a temperature sensor and LCD to make pH and temperature values. This module is equipped with an internal calibration that is u

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Adin, Nur, and Hilal Hudan Nuha. "Automatic Drain System in Seawater Aquarium with Fuzzy Logic Method." JURNAL MEDIA INFORMATIKA BUDIDARMA 4, no. 3 (2020): 753. http://dx.doi.org/10.30865/mib.v4i3.2209.

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In seawater aquariums, seawater quality plays a very important role for the survival of the biota in it. There are measurement parameters that determine the quality of the seawater fit to be inhabited by seawater ornamental fish such as clown fish. Measurement parameters are such as temperature, salinity, dissolved oxygen content (DO), pH, ammonia, nitrite, and nitrate. Current technological developments make it possible to create a system that automatically conducts seawater drainage in a seawater aquarium so that the quality of the seawater remains in accordance with its measurement paramete

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12

Baikhozhayeva, B. U., A. K. Zhumagali, and A. E. Moldakhmetova. "Comparison of ph measurement results in buffer solution." BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series 135, no. 2 (2021): 64–70. http://dx.doi.org/10.32523/2616-7263-2021-135-2-64-70.

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As a result of the increasing need to study the choice of the assigned value during the inter-laboratory comparisons is becoming more and more relevant. Since the assigned value is a reference point when comparing the results of the participants of the qualification test. Frequently, qualification verification providers face a number of problems when choosing the assigned value. An incomplete analysis of the results of interlaboratory comparisons will lead to an inaccurate assessment of the competence of the laboratory, which contributes to the revocation of the certification of the accreditat

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Harvyandha, Avryan. "Telemetry Measurement of Acidity in Real Time Using the Raspberry Pi." Jurnal Jartel: Jurnal Jaringan Telekomunikasi 9, no. 4 (2019): 55–60. http://dx.doi.org/10.33795/jartel.v9i4.158.

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PH is the standard value of degree of acidity expressed on a scale 0-14. PH can be influenced by several factors such as temperature and CO2. Acidification occurs because CO2 enters the liquid in the form of dissolved gas then reacts with water to form a salt in the form of carbonic acid. The acidity can be determined by measuring the pH. PH measurement is an activity to determine the value of degree of acidity. PH measurement is needed to reduce the impact on the environment because pH is closely related to pollution. However, the existing measurement tools are still manual, while real time m

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Keleş, Sedef, and Nezir Yaşar Toker. "Determination of collagen and pH measurement in beef: Modern laboratory techniques." Journal of Istanbul Veterinary Sciences 8, no. 2 (2024): 126–30. http://dx.doi.org/10.30704/http-www-jivs-net.1479918.

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Determining the pH value and collagen value in beef is very important in terms of healthy and quality nutrition. Collagen value is of great importance in meat-like products in order to offer healthy products to consumers. Today, various measurement techniques are used to measure pH value and collagen value. However, the success and reliability of each measurement varies. Therefore, more sensitive and reliable measurement methods need to be developed. Within the scope of this study, modern techniques used in the food industry to measure the pH value and collagen value of cut meat were examined.

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15

Prokunin, Sergey V., Andrey N. Shchipunov, Daria A. Vengina, et al. "Results of pilot comparisons of national standards for the activity of hydrogen ions in aqueous solutions." Izmeritel`naya Tekhnika, no. 1 (2021): 66–72. http://dx.doi.org/10.32446/0368-1025it.2021-1-66-72.

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The enormous needs in ensuring the measurement of the hydrogen index in various industries and the national economy of Russia make the measurement of the hydrogen index one of the most important methods for monitoring aqueous media. In 2013, work was carried out to enter into the State Register of Measuring Instruments of the Russian Federation a buffer solution and a standard titer with a pH value of 7.00 – a working pH standard of the 2nd category, which is one of the most demanded of non-standard solutions for verification and calibration pH measuring instruments. To confirm the metrologica

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16

Zhou, Li Mei, Xiao Fei Hu, and Su Mei Wu. "Effects of pH Value on Performance of CdS Films with Chemical Bath Deposition." Advanced Materials Research 557-559 (July 2012): 1941–44. http://dx.doi.org/10.4028/www.scientific.net/amr.557-559.1941.

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CdS thin films were prepared by chemical-bath deposition (CBD) from a bath containing thiourea, acetic cadmium, ammonia and ammonium acetate in aqueous solution onto glass substrates at 80°C with stirring. The influence of pH value on the surface morphology and optical properties of the CdS thin films was investigated. Step height measurement instrument, scanning electron microscopy (SEM), X-ray diffraction (XRD), spectrophotometer and digital four-point probe resistance measurement were used to characterize their thickness, surface morphology, crystal structure, electrical and optical propert

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17

Mannion, A. F., P. M. Jakeman, and P. L. Willan. "Determination of human skeletal muscle buffer value by homogenate technique: methods of measurement." Journal of Applied Physiology 75, no. 3 (1993): 1412–18. http://dx.doi.org/10.1152/jappl.1993.75.3.1412.

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The human muscle buffer value (beta) is most frequently determined by either fixed acid titration of a homogenate ["in vitro" beta (beta vit)] or measurement of the change in lactate concentration (delta [La]) relative to the change in muscle homogenate pH after high-intensity exercise ["in vitro" beta = - delta [La]/delta pH (beta viv)]. We sought to compare beta viv, determined after isometric and dynamic exercise to exhaustion (approximately 60 s), with beta vit. Resting (R) and postexercise (E) biopsy samples were taken from vastus lateralis muscles of 43 human volunteers. Freeze-dried mus

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18

Veselinovic, Dragan, and Zoran Velikic. "The pH measurement with glass electrode in an electromagnetic field." Journal of the Serbian Chemical Society 81, no. 12 (2016): 1407–14. http://dx.doi.org/10.2298/jsc160407082v.

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Measurements of pH values of buffer solutions (pH 4.0, 7.0 and 10.0) and distilled water have been performed with a glass electrode in electromagnetic field at the frequency interval of 10 MHz to 200 MHz and the output power of dispersed and reflected electromagnetic radiation of 0.01 W to 3 W. In all the cases, there occurred a reduction of pH values, i.e. a "recorded pH value" was obtained. The reduction appears within the applied frequency interval reaching extreme values at specific frequencies. The reduction of the pH values increases with the radiation power and depend of the solution bu

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19

Izati, Nurul, and Riad Syech. "ANALISIS PENGARUH RESAPAN AIR LAUT TERHADAP INTRUSI AIR SUMUR GALI DESA JANGKANG KABUPATEN BENGKALIS." Komunikasi Fisika Indonesia 17, no. 1 (2020): 7. http://dx.doi.org/10.31258/jkfi.17.1.7-13.

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This study aims to determine how much the pollution level of wells digging to the distance of wells from the coast by analyzing the values of the conductivity, salinity, pH and heavy metals such as Lead(Pb), Iron(Fe) and Manganese(Mn). The method used was purposive sampling with number of sample are 10 sample points with variation distance ± 100 m. Conductivity measurements were carried out in two ways, namely using a conductivitimeter and Wheatstone bridge. The measurement results using conductivity meter indicate that the average conductivity value of a well water sample is 125.50 - 80.04 μS

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20

Fadhilah, M. F., Y. Hidayat, and A. Hadiyane. "The role of the mahogany tree (Swietenia macrophylla King) on quantity and quality of water that fall below the canopy." IOP Conference Series: Earth and Environmental Science 918, no. 1 (2021): 012036. http://dx.doi.org/10.1088/1755-1315/918/1/012036.

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Abstract Mahogany trees (Swietenia macrophylla) are often planted in urban forests area. This shady-crowned tree has a role in controlling the quantity and quality of rainwater that falls to the ground. Mahogany trees also affect the quality of rainwater through interception, fall, and stemflow. The purpose of this research was to determine the impact of the interception process, such as throughfall and stemflow, on changes in rainwater quality of the mahogany tree. The Data that needed to be measured were tree dimension, rainfall interception, and rainwater quality. Interception measurement w

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21

Wiora, Józef, and Alicja Wiora. "Measurement Uncertainty Calculations for pH Value Obtained by an Ion-Selective Electrode." Sensors 18, no. 6 (2018): 1915. http://dx.doi.org/10.3390/s18061915.

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22

Nagel, M., A. Wierschem, C. Rauh, and A. Delgado. "Optical measurement of the pH value of intransparent samples under high pressure." High Pressure Research 35, no. 2 (2015): 162–69. http://dx.doi.org/10.1080/08957959.2015.1027202.

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23

Watanabe, Yasuo. "Modern Technology for In-Line pH Measurement in P&P Industry-How to Get Reliable pH Value on the In-line Measurement-." JAPAN TAPPI JOURNAL 58, no. 3 (2004): 387–93. http://dx.doi.org/10.2524/jtappij.58.387.

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Czinkota, Imre, Gy Filep, and M. Rékási. "An Equipment and Software for Improved Estimation of Soil Acidity." Agrokémia és Talajtan 51, no. 1-2 (2002): 63–72. http://dx.doi.org/10.1556/agrokem.51.2002.1-2.8.

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For estimating the lime requirement (LR) in some countries it is accepted to use hydrolytic acidity suggested by Kappen, which is based on a single time extraction of hydrogen- and aluminum ion with calcium acetate. More accurate results could be achieved if we measured the total surface acidity (TSA) of soils. For this reason it is an improvement to use a direct measurement method and equipment, which is suitable to estimate the results of long-term processes and TSA, via investigating the kinetic properties of desorption. The method of measurement: A pH electrode is dipped into continuously

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Md Nuzaihan, M. N., U. Hashim, Mohd Khairuddin Md Arshad, A. Rahim Ruslinda, and A. H. Azman. "The Electrical Signals Measurement for Silicon Nanowires pH Sensor." Advanced Materials Research 1109 (June 2015): 219–22. http://dx.doi.org/10.4028/www.scientific.net/amr.1109.219.

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In this work, we report the geometrical characteristics and the electrical performance of silicon nanowires array for pH level detection. The smallest silicon nanowires structure is 40 nm width and 400 μm length. The Silicon Nanowires Array is tested with pH buffer solutions of pH4, pH7 amd pH10. Direct current (DC) measurement is the most common method of detecting the electrical signals of silicon nanowires sensor. The results show that the IV characteristic is directly proportional and the pH sensitivity calculated from linear relation between the drain-source current vs the pH value was 1.

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Wenzl, Tobias G., Christoph Moroder, Morten Trachterna, et al. "Esophageal pH Monitoring and Impedance Measurement: A Comparison of Two Diagnostic Tests for Gastroesophageal Reflux." Journal of Pediatric Gastroenterology and Nutrition 34, no. 5 (2002): 519–23. http://dx.doi.org/10.1002/j.1536-4801.2002.tb07680.x.

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ABSTRACTBackgroundpH monitoring is the standard diagnostic tool for gastroesophageal reflux in infants. However, this method does not document the reflux of all kinds of fluid from the stomach into the esophagus, but only documents acid material. The parameters that define reflux episodes by pH monitoring have been derived empirically from observations of many infants considered healthy and ill. Acid reflux is a continuum, some reflux is normal and doubt exists as to how much reflux is abnormal. In this study, one of the standardized protocols for analyzing pH recordings was evaluated and comp

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Bogdanov, A. A., and An A. Bogdanov. "Acid-base balance in the regulation of tumor growth: value for the clinicians." Practical oncology 22, no. 1 (2021): 193–203. http://dx.doi.org/10.31917/2203193.

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Tumor acidosis affects every stage of cancer development, from dysplasia to full-blown metastatic disease. Survival strategies of malignant cells in an acidic microenvironment and pH gradient inversion promote resistance to chemotherapy, radiotherapy and immunotherapy, and suppress the antitumor immune response. It is necessary to consider the low pH of the microenvironment both when diagnosing and when choosing the most optimal treatment regimen. The development of methods for non-invasive measurement of tumor pH, methods for direct and indirect correction of acidosis, new pH-activated and pH

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Albatany, Mohammed, Susan Meakin, and Robert Bartha. "Brain pH Measurement Using AACID CEST MRI Incorporating the 2 ppm Amine Resonance." Tomography 8, no. 2 (2022): 730–39. http://dx.doi.org/10.3390/tomography8020060.

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Many pathological conditions lead to altered intracellular pH (pHi) disrupting normal cellular functions. The chemical exchange saturation transfer (CEST) method, known as Amine and Amide Concentration Independent Detection (AACID), can produce image contrast that is predominantly dependent on tissue intracellular pHi. The AACID value is linearly related to the ratio of the 3.5 ppm amide CEST effect and the 2.75 ppm amine CEST effect in the physiological range. However, the amine CEST effect at 2 ppm is often more clearly defined in vivo, and may provide greater sensitivity to pH changes. The

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Yakin, Gusnul H., I. Made Satriya Wibawa, and I. Ketut Putra. "Design of Soil pH Measuring Instruments Using pH Meter Sensor Module V1.1 SEN0161 Based on Arduino Uno." BULETIN FISIKA 22, no. 2 (2021): 105. http://dx.doi.org/10.24843/bf.2021.v22.i02.p08.

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It has been successfully made a soil pH measuring instrument using pH meter sensor module V1.1 SEN0161 based Arduino Uno. The pH result is measured through the output of the pH meter sensor output value read by the 16-bit ADC. Measurement results are displayed on a 2x16 LCD. The results of calibration test tools performed against standard measuring instruments obtained regression equation y = 0.0012x - 4.0768 with x is the output of sensor output value with accuracy level includes an average deviation of 0.13 and tool precision value of 97.98%. The results of calibration test tools carried out

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Kuselman, Ilya, Yakov I. Tur’Yan, Tat’Yana Bourenko, Irene Goldfeld, and Avinoam Shenhar. "pH-Metric Determination of the Acid Value of Oilseeds without Titration." Journal of AOAC INTERNATIONAL 82, no. 4 (1999): 915–22. http://dx.doi.org/10.1093/jaoac/82.4.915.

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Abstract A pH-metric method for determining the acid values (AVs) of oilseeds in the range 0.6–10 mg KOH/g oil or more has been developed. The method is based on rapid (1–2 min) and complete extraction of free fatty acids from an oilseed test portion into a special reagent A, transfer of an aliquot of the reagent into pH-metric cell with another reagent B, and then measurement of the conditional pH in the mixture of reagents by a glass electrode. Total time for the determination including calculation is 9–10 min. The method is rapid, cheap, simple for automation, and not labor intensive.

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Le, Son T., Seulki Cho, Alexander Zaslavsky, Curt A. Richter, and Arvind K. Balijepalli. "High-performance dual-gate graphene pH sensors." Applied Physics Letters 120, no. 26 (2022): 263701. http://dx.doi.org/10.1063/5.0086049.

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Field-effect transistors (FETs) are versatile tools for high-precision biophysical measurements, and their measurement sensitivity and resolution can be improved by using innovative materials and device designs. Here, we report on the sensitivity and noise performance of dual-gated graphene FETs. When measuring pH, our devices exhibit a sensitivity of up to 30 V per unit change in pH, ≈500-fold greater than the Nernst value at room temperature, and noise-limited resolution of 2 × 10−4 in the biomedically relevant 0.1–10 Hz bandwidth. This level of performance is obtained due to a highly asymme

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Vizárová, Katarína, Izabela Vajová, Naďa Krivoňáková, et al. "Regression Analysis of Orthogonal, Cylindrical and Multivariable Color Parameters for Colorimetric Surface pH Measurement of Materials." Molecules 26, no. 12 (2021): 3682. http://dx.doi.org/10.3390/molecules26123682.

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The surface pH is a critical factor in the quality and longevity of materials and products. Traditional fast colorimetric pH detection-based tests such as water quality control or pregnancy tests, when results are determined by the naked eye, cannot provide quantitative values. Using standard pH papers, paper-printed comparison charts, or colorimetric microfluidic paper-based analytical devices is not suitable for such technological applications and quality management systems (QMSs) where the particular tested material should contain a suitable indicator in situ, in its structure, either befor

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Gasteiner, J., T. Guggenberger, J. Häusler, and A. Steinwidder. "Continuous and Long-Term Measurement of Reticuloruminal pH in Grazing Dairy Cows by an Indwelling and Wireless Data Transmitting Unit." Veterinary Medicine International 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/236956.

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The aim of the present study was the continuous measurement of ruminal pH in grazing dairy cows to monitor the diets effects on ruminal pH value. A novel indwelling pH-measurement and data transmitting system was given to 6 multiparous cows orally. Ruminal pH was measured every 600 sec over a 40 d period. After barn feeding and changeover to pasture, the following 3 treatments (2 cows/treatment) were included in the measurement period: continuous grazing (G), continuous grazing plus 4 kg/d of hay fed twice daily (GH), and continuous grazing plus 4 kg/d of concentrate (GC). Ruminal pH decreased

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Wray, S. "Smooth muscle intracellular pH: measurement, regulation, and function." American Journal of Physiology-Cell Physiology 254, no. 2 (1988): C213—C225. http://dx.doi.org/10.1152/ajpcell.1988.254.2.c213.

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Smooth muscle performs many functions that are essential for the normal working of the human body. Changes in pH are thought to affect many aspects of smooth muscle. Despite this, until recently little was known about either intracellular pH (pHi) values or pHi regulation in smooth muscle. Recent work measuring pHi with either microelectrodes or nuclear magnetic resonance spectroscopy is now providing some of this much needed information for smooth muscles. From these studies, it can be concluded tentatively that pHi is the same in different smooth muscles, approximately 7.06 (37 degrees C). T

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Kuo, Chil-Chyuan, and Yu-Teng Siao. "On-line pH value measurement of solution on the removing support material process." Optik 125, no. 13 (2014): 3209–13. http://dx.doi.org/10.1016/j.ijleo.2014.01.021.

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Scheier, R., and H. Schmidt. "Measurement of the pH value in pork meat early postmortem by Raman spectroscopy." Applied Physics B 111, no. 2 (2013): 289–97. http://dx.doi.org/10.1007/s00340-012-5332-y.

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Iswantini, Dyah, Rani Melati Sukma, Novik Nurhidayat, and Ali Aulia Ghozali. "LOW CONCENTRATION PHENOL DETECTION USING PSEUDOMONAS FLUORESCENS BIOFILM IMMOBILIZED ON SCREEN PRINTED CARBON ELECTRODE (SPCE)." Journal of Southwest Jiaotong University 56, no. 4 (2021): 1–6. http://dx.doi.org/10.35741/issn.0258-2724.56.4.1.

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A new method of phenol measurement based on cyclic voltammetry has been tried using Pseudomonas fluorescens biofilm as a bioreceptor. The research is aimed at developing a new measurement for detecting phenol and related compounds using bacterial biofilm. Therefore, it can be further developed for in situ phenol and related compounds monitoring. The trial evaluated several variables, such as optimum pH value during measurement and biofilm development time. Measurement was conducted at a relatively low concentration (1 ppb – 1 ppm). Based on the obtained data, the optimum measurement was at pH

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Iswantini, Dyah, Rani Melati Sukma, Novik Nurhidayat, and Ali Aulia Ghozali. "LOW CONCENTRATION PHENOL DETECTION USING PSEUDOMONAS FLUORESCENS BIOFILM IMMOBILIZED ON SCREEN PRINTED CARBON ELECTRODE (SPCE)." Journal of Southwest Jiaotong University 56, no. 4 (2021): 1–6. http://dx.doi.org/10.35741/issn.0258-2724.56.4.1.

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A new method of phenol measurement based on cyclic voltammetry has been tried using Pseudomonas fluorescens biofilm as a bioreceptor. The research is aimed at developing a new measurement for detecting phenol and related compounds using bacterial biofilm. Therefore, it can be further developed for in situ phenol and related compounds monitoring. The trial evaluated several variables, such as optimum pH value during measurement and biofilm development time. Measurement was conducted at a relatively low concentration (1 ppb – 1 ppm). Based on the obtained data, the optimum measurement was at pH

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Julian, James, Fitri Wahyuni, and Faiz Daffa Ulhaq. "Reliability Analysis of pH Measurement on TLC4502 with E201C Electrodes based on ATmega328P Microcontroller: Approach to Analysis of Variation with ANOVA." ELKHA 15, no. 1 (2023): 32. http://dx.doi.org/10.26418/elkha.v15i1.62982.

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The development of the water management system has so far reached the stage of utilizing IoT technology in the monitoring and operation process. An essential factor in water that affects the quality of a substance is pH. The research aims to analyze and ensure that the devices have a small pH measurement error rate with TLC4502 & E201C. The calibration process was carried out using linear regression, and value of 0.99 was obtained. Analysis was carried out using one-way ANOVA and Tukey HSD methods, and it was found that all data pairs rejected the null hypothesis (H0) and accepted the alte

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Cahyotomo, Anom, Mohammad Jihad Madiabu, Arie Pratama Putra, Ardina Purnama Tirta, Imas Solihat, and Dicky Annas. "Fabrication and Characterization of Syringe Carbon Paste Electrode for Electrochemical Measurement." Helium: Journal of Science and Applied Chemistry 4, no. 2 (2024): 39–45. https://doi.org/10.33751/helium.v4i2.5.

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This study aims to fabricate and characterize a syringe carbon paste electrode (SCPE) using K3Fe(CN)6 10 mM solution with cyclic voltammetry technique. Characterization is performed by varying pH (pH 4, 7, and 10) and scan rate (30 - 100 mV/s) so that the characteristics of SCPE can be observed. The K3Fe(CN)6 10 mM solution test results at various pH variations obtained the largest anodic peak current (Ipa) at pH 10 was 44.75 µA. The scan rate results at various pH showed linear results with the diffusion coefficient of 1.77 x 10-6 cm2/s, 1.65 x 10-6 cm2/s, and 2.50 x 10-6 cm2/s with r values

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Preibisch, Imke, Lena-Marie Ränger, Pavel Gurikov, and Irina Smirnova. "In Situ Measurement Methods for the CO2-Induced Gelation of Biopolymer Systems." Gels 6, no. 3 (2020): 28. http://dx.doi.org/10.3390/gels6030028.

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This work presents two novel methods to investigate in situ the carbon dioxide (CO2)-induced gelation of biopolymer-based solutions. The CO2-induced gelation is performed in a viewing cell at room temperature under CO2 pressure (20 to 60 bar), whereby calcium precursors are used as cross-linkers. The novel methods allow the in situ optical observation and evaluation of the gelation process via the change in turbidity due to dissolution of dispersed calcium carbonate (CaCO3) particles and in situ pH measurements. The combination of both methods enables the determination of the gelation directio

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bin Rosley, Mohammad Nazry, Noreffendy bin Tamaldin, M. F. B. Abdollah, and Z. M. Zulfattah. "The Effects of Voltage Flow and pH Value in Alkaline Electrolyser System to Performance." Applied Mechanics and Materials 773-774 (July 2015): 440–44. http://dx.doi.org/10.4028/www.scientific.net/amm.773-774.440.

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The aim of this paper is to investigate the effects of voltage flow (V) in the alkaline electrolyser system and the pH value (pH) of the electrolyte used in the electrolyser. The output measurement of both investigated factors in in the flow rate of the hydrogen gas produced by the system per minute (ml/min). The voltage flow was altered in the system by altering the voltage supply from the workbench power supply ranging from 11V to 14V. The pH value of the electrolyte solution in the electrolyser was altered by the addition of Potassium Hydroxide (KOH) in the distilled water. The pH value sam

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Farehanim, M. A., U. Hashim, Norhayati Soin, et al. "Morphological and Electrical Properties of Silicon Dioxide-Based Interdigitated Electrode Arrays." Advanced Materials Research 1109 (June 2015): 253–56. http://dx.doi.org/10.4028/www.scientific.net/amr.1109.253.

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The electrical performances of silicon dioxide-based Interdigitated electrodes (IDEs) as biosensor were developed. The IDEs was made up by two individually addressable Interdigitated comb-like finger structure have frequently been suggested as a biosensor which promises higher sensitivity compared to conventional parallel electrodes. The purpose of this paper was to investigate the capacitance test and impedance test to taken with various pH solution to observe the response of the sensor with different pH values. Purchased pH buffer solutions which varied from pH2 to pH10 are dropped on the mi

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Naser, Ali, Joao Amaral Teixeira, and Abdulmajid Addali. "New pH Correlations for Stainless Steel 316L, Alumina, and Copper(I) Oxide Nanofluids Fabricated at Controlled Sonication Temperatures." Journal of Nano Research 58 (June 2019): 125–38. http://dx.doi.org/10.4028/www.scientific.net/jnanor.58.125.

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This research investigates the pH value of stainless steel (SS) 316L/ deionised water (DIW), alumina (Al2O3)/DIW, and copper (I) oxide (Cu2O)/DIW nanofluids prepared using a two-step controlled sonication temperature approach of 10°C to 60°C. The nanoparticles volumetric concentration of each family of as-prepared nanofluid ranged from 0.1 to 1.0 vol%, using as-received nanopowders, of 18 – 80 nm average particles size. Furthermore, the pH measuring apparatus and the measurement procedure were validated by determining the pH of commercially supplied calibration fluids, of pH 4, 7, and 10. Foll

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A. Al-Ghali, Basma, Hussein H. Alzubeidy, and Ziad T. Al-Dahan. "Non-Invasive Measurement of Arterial pH During Cardiopulmonary Bypass." International Journal of Online and Biomedical Engineering (iJOE) 18, no. 10 (2022): 190–98. http://dx.doi.org/10.3991/ijoe.v18i10.31523.

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Blood pH is an essential parameter to determine the patient's acid-base status during cardiopulmonary bypass. To date, continuous pH measurement is usually done by continuous blood sampling using an expensive disposable sensor. This paper shows the feasibility of measuring arterial pH from the partial pressure of carbon dioxide (PaCO2) using arterial blood gas analysis. Further, the effect of hyperglycemia on pH estimation is included to show the necessity of combining glucose monitoring with PaCO2 monitoring. 245 blood samples from patients who underwent cardiopulmonary bypass were used

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Wett, B., R. Rostek, W. Rauch, and K. Ingerle. "pH-controlled reject-water-treatment." Water Science and Technology 37, no. 12 (1998): 165–72. http://dx.doi.org/10.2166/wst.1998.0532.

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Dewatering of digested sludge causes significant internal nitrogen loading to a wastewater treatment plant. Due to the high concentration of nitrogen it is more effective to treat the reject-water not directly in the main purification process but to apply a separate biological treatment procedure. The intermittent operation of sludge-press facilities, the high initial pH-value of reject-water and the quick loss of alkalinity during nitrification makes a reliable control of the process necessary. A sequencing batch reactor (SBR) with an operational control based on on-line measurement of the pH

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Fallingborg, Jan, Lisbet A. Christensen, Margrethe Ingeman‐Nielsen, et al. "Measurement of Gastrointestinal pH and Regional Transit Times in Normal Children." Journal of Pediatric Gastroenterology and Nutrition 11, no. 2 (1990): 211–14. http://dx.doi.org/10.1002/j.1536-4801.1990.tb10089.x.

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Summary:Gastrointestinal pH and regional intestinal transit times of a capsule were measured in twelve healthy children aged 8–14 years using a radiotransmitting pH‐sensitive capsule. The location of the capsule was determined by fluoroscopy. pH in the stomach was 1.5, but rose to 6.4 in the duodenum (mean values). pH gradually rose in the small intestine and reached an alkaline peak value of 7.4 in the distal part. pH dropped to 5.9 in the cecum but rose to 6.5 in the rectum. Median gastric residence time of the capsule was 1.1 h. Small intestinal transit time was 7.5 h, and colonic transit t

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Prabaswara, I. D. G. W., P. O. W. Aryawan, M. Haikal, I. Akbar, N. Jannah, and M. F. Ulum. "Automation of bull semen analysis through the development of a modular open technology device for cryopreservation." IOP Conference Series: Earth and Environmental Science 1359, no. 1 (2024): 012022. http://dx.doi.org/10.1088/1755-1315/1359/1/012022.

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Abstract Bull semen quality analysis is an important step before processing frozen semen for artificial insemination. Transportation from the shelter to the laboratory can reduce semen quality and kill the spermatozoa. This study aimed to develop a prototype that can automatically analyse bull semen quality using a modular open-technology device with multi-digital sensors that is comparable to standard laboratory measurements. The prototype components consisted of the following: (1) input: syringe as the semen container to be tested, do-it-yourself (DIY) water level sensor for volume measureme

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Karthik, A. V., Nischal Alpe A, P. Kulkarni Aditya, V. Ganesh, N. R. Deepak, and B. Shruthi. "Analyzing and Forecasting Soil PH Prediction." Recent Trends in Data Knowledge Discovery and Data Mining 1, no. 1 (2025): 31–39. https://doi.org/10.5281/zenodo.15194510.

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<em>In short, measurement of soil pH has importance in terms of health and productivity besides sustainability in farm practices. Soil pH prediction up to a very accurate degree therefore would hold value not only for soil management but also for better fertilizer application. The paper reports on the data-driven approach that can predict soil pH using machine learning algorithms. It has to do with the environmental factors supplemented with geospatial data from historical records from the soil, and it is highly accurate in predicting pH levels involved. Methodology: The process includes data

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Huan, Zhao, ZHANG Shu-guang, ZHAO Xue-liang, and WANG Dong-xuan. "Design of High Precision and Low Drift PH Value Online Monitoring Instrument." International Journal of Sciences Volume 6, no. 2017-02 (2017): 55–60. https://doi.org/10.5281/zenodo.3349369.

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The geological storage of carbon dioxide is a practical and effective method to reduce the greenhouse effect,In order to prevent the leakage of carbon dioxide bring about a serious impact on the environment, the need to carry out in situ online monitoring of pH value to determine the dynamics of underground carbon dioxide.In this paper,a high precision and low drift pH value online monitoring instrument based on temperature compensation is designed with MSP430F5438 as the core.The software flow chart and the relationship the pH value,the electrode signal and the temperature of the measured liq

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