Browsing by Author "Maddukuri, Naveen"
Now showing items 1-6 of 6
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CE-LIF coupled with PDMS-interconnected microfluidic systems for rapid separations of neurotransmitters
Zhang, Qiyang; Maddukuri, Naveen (Wichita State University. Graduate School, 2014-04-25)In vivo measurement of neurotransmitters in cerebrospinal fluidic (CSF) is an effective method to monitor neuronal activities. Microdialysis coupled with HPLC or capillary electrophoresis (CE) is a powerful approach for ... -
A direct and rapid method to determine cyanide in urine by capillary electrophoresis
Zhang, Qiyang; Maddukuri, Naveen; Gong, Maojun (Elsevier B.V., 2015-10-02)Cyanides are poisonous chemicals that widely exist in nature and industrial processes as well as accidental fires. Rapid and accurate determination of cyanide exposure would facilitate forensic investigation, medical ... -
Enhancing detection sensitivity for measuring amino neurotransmitters with flow-gated capillary electrophoresis
Maddukuri, Naveen (Wichita State University, 2020-07)Capillary electrophoresis (CE) commences as a promising technique for analyzing a variety of biological substances and has been used in bioanalytical and biopharmaceutical applications. Flow-gated CE has numerous advantages ... -
Flow-gated capillary electrophoresis: a powerful technique for rapid and efficient chemical separation
Gong, Maojun; Zhang, Ning; Maddukuri, Naveen (Royal Society of Chemistry, 2018-05-30)Flow-gated capillary electrophoresis (CE) is a hybrid of conventional and microchip CE since it employs a fused silica capillary as the separation channel while taking advantage of the rapid flow-gated injection that is ... -
Online preconcentration of high-salt samples using pressure-assisted field-amplified sample injection in flow-gated capillary electrophoresis
Maddukuri, Naveen; Gong, Maojun (Wichita State University, 2019-04-26)Capillary electrophoresis (CE) is a valuable separation method; however, its detection sensitivity is often limited by the small sample volumes injected. Different strategies have been developed to enhance the sensitivity, ... -
Rapid labeling of amino acid neurotransmitters with a fluorescent thiol in the presence of o-phthalaldehyde
Maddukuri, Naveen; Zhang, Qiyang; Zhang, Ning; Gong, Maojun (John Wiley & Sons, Inc., 2017-02)LIF detection often requires labeling of analytes with fluorophores; and fast fluorescent derivatization is valuable for high-throughput analysis with flow-gated CE. Here, we report a fast fluorescein-labeling scheme for ...