A Handheld, Colorimetric Optoelectronic Dynamics Analyzer for Measuring Total Ammonia of Biological Samples

Liu, Nai-Yuan; Cay-Durgun, Pinar; Lai, Tianmiao; Sprowls, Mark; Thomas, Leslie; Lind, Mary Laura; Forzani, Erica

doi:10.1109/jtehm.2018.2840678

Cited by 14 publications

(14 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both ammonium and sulphate (or S) determinations are uncommon. Urinary ammonium can be measured by enzymatic methods using automated systems [ 81 , 82 ], and the potential exists to use electronic methods [ 83 , 84 ]. For sulphate, either precipitation with barium chloride or chromatographic methods is successful [ 85 ].…”

Section: Q9 What Are the Best Methods For Analysing Urine For The Anmentioning

confidence: 99%

Urine and stone analysis for the investigation of the renal stone former: a consensus conference

et al. 2020

View full text Add to dashboard Cite

The Consensus Group deliberated on a number of questions concerning urine and stone analysis over a period of months, and then met to develop consensus. The Group concluded that analyses of urine and stones should be routine in the diagnosis and treatment of urinary stone diseases. At present, the 24-h urine is the most useful type of urine collection, and accepted methods for analysis are described. Patient education is also important for obtaining a proper urine sample. Graphical methods for reporting urine analysis results can be helpful both for the physician and for educating the patient as to proper dietary changes that could be beneficial. Proper analysis of stones is also essential for diagnosis and management of patients. The Consensus Group also agreed that research has shown that evaluation of urinary crystals could be very valuable, but the Group also recognizes that existing methods for assessment of crystalluria do not allow this to be part of stone treatment in many places.

show abstract

Section: Q9 What Are the Best Methods For Analysing Urine For The Anmentioning

confidence: 99%

Urine and stone analysis for the investigation of the renal stone former: a consensus conference

et al. 2020

View full text Add to dashboard Cite

show abstract

“…The accessary can also be used to detect biomarkers in biological samples. Abnormal urine ammonium (NH 4 + ) levels are most often caused by kidney and liver diseases 34 , and thus monitoring urine NH 4 + could enable early diagnosis and management of diseases. NH 4 + ions in liquid are volatile and rapidly turn into NH 3 .…”

Section: Integration With Mobile Electronicsmentioning

confidence: 99%

A Multiplexed Chemical Sensing CMOS Imager

Wang¹,

Zhang²,

Mallires³

et al. 2021

Preprint

Self Cite

View full text Add to dashboard Cite

A miniaturized and multiplexed chemical sensing technology is urgently needed to empower mobile devices, Internet-of-Things (IoTs) and robots for various new applications. Here, we show that a complementary metal-oxide-semiconductor (CMOS) imager can be turned into a multiplexed colorimetric sensing chip by coating micron-scale colorimetric sensing spots on the imager surface. Each sensing spot contains chemical sensing materials and nanoparticles for colorimetric signal enhancement. The sensitivity is spot-size invariant, and high-performance chemical sensing can be achieved on sensing spot as small as ~ 10 µm. This great scalability combined with millions of pixels of a CMOS imager offers a promising platform for highly integrated chemical sensors. Moreover, the chemical CMOS chip can be readily integrated with mobile electronics. As a proof-of-concept, we have built a smartphone accessary based on this chemical CMOS chip for personal health management. We anticipate that this new platform will pave the way for the widespread application of chemical sensing, such as mobile health (mHealth), IoTs, electronic nose, and smart homes.

show abstract

“…To detect this change in color, three basic components are needed: a light source, the chemochromic substance, and the light sensor. Liu et al [43] has developed a solid-state, portable, and automated device capable to measure total ammonia amount in liquids, including the biological samples (e.g., urine). The idea of operation of the colorimetric sensor is shown in Figure 2.…”

Section: Solid-state Ammonia Sensorsmentioning

confidence: 99%

Ammonia Gas Sensors: Comparison of Solid-State and Optical Methods

et al. 2020

View full text Add to dashboard Cite

High precision and fast measurement of gas concentrations is important for both understanding and monitoring various phenomena, from industrial and environmental to medical and scientific applications. This article deals with the recent progress in ammonia detection using in-situ solid-state and optical methods. Due to the continuous progress in material engineering and optoelectronic technologies, these methods are among the most perceptive because of their advantages in a specific application. We present the basics of each technique, their performance limits, and the possibility of further development. The practical implementations of representative examples are described in detail. Finally, we present a performance comparison of selected practical application, accumulating data reported over the preceding decade, and conclude from this comparison.

show abstract

A Handheld, Colorimetric Optoelectronic Dynamics Analyzer for Measuring Total Ammonia of Biological Samples

Cited by 14 publications

References 48 publications

Urine and stone analysis for the investigation of the renal stone former: a consensus conference

Urine and stone analysis for the investigation of the renal stone former: a consensus conference

A Multiplexed Chemical Sensing CMOS Imager

Ammonia Gas Sensors: Comparison of Solid-State and Optical Methods

Contact Info

Product

Resources

About