Breath Acetone Analysis of Diabetic Dogs Using a Cavity Ringdown Breath Analyzer

Room-temperature high-performance acetone gas sensor based on hydrothermal synthesized SnO2-reduced graphene oxide hybrid composite

“…7 and Fig. 8, the gas response of the SnO 2 -RGO hybrid composite to variation of acetone gas was about 2- 5 fold higher than that of the pure RGO film. This is mainly attributed to the high surface area, 3D porous nanostructure and special interactions between RGO sheets and SnO 2 nanoparticles.…”

“…As shown in Fig. 3(a), it is clearly seen that the RGO has wrinkles with overlap at the edges, and demonstrates randomly 5 aggregated RGO sheets. The result in Fig.…”

“…SnCl 4 ·5H 2 O (99%) was 5 purchased from Shanghai Hansi Chemical Industry Co., Ltd (Shanghai, China). All the above chemicals were used as received without further treatment.…”

“…20 Diagnostic sensing device using exhaled breath of human have critical advantages due to the noninvasive diagnosis and high potential for portable device with simple analysis process. Sensitive detection of acetone gas in exhaled human breath, serving as breath marker for some diseases such as diabetes and 25 halitosis, may offer valuable reference for early diagnosis of these diseases [1][2][3][4][5] . Furthermore, the detection of acetone gas is also of great significance in various other applications, such as industrial production, environmental monitoring, and forecast of toxic gas or volatility poisonous chemical leakage.…”

Recent developments in minimally and truly non-invasive blood glucose monitoring techniques

“…A sensor based on the combination of impedance (10 to 76 kHz range) and multiwavelength (850nm, 950nm, 1300nm) near infra-red (NIR) spectroscopy with a dedicated integrated circuit [15] and a technique measuring the refraction of visible laser light to overcome the signal to noise ratio issue related to NIR spectroscopy [16] were also reported. Wearable sensors capable of measuring glucose concentration through saliva and sweat [17] [18], and a benchtop system capable of estimating glucose level through breath have been published [19] [20].…”