Simple and green method for direct quantification of hypochlorite in household bleach with membraneless gas-separation microfluidic paper-based analytical device

Review and Perspective: Gas Separation and Discrimination Technologies for Current Gas Sensors in Environmental Applications

“…For instance, Phansi et al used a paper-based microfluidic analytical device for the detection of specific ammonia in a fish pond. In another interesting work, Sitanurak et al reported a membrane-less gas separation microfluidic paper-based analytical device for detecting hypochlorite in bleach . Likewise, Yong et al reported gas separation from a liquid using a microfluidic device in which the mesh was fabricated using a femtosecond laser .…”

“…In another interesting work, Sitanurak et al reported a membrane-less gas separation microfluidic paper-based analytical device for detecting hypochlorite in bleach. 49 Likewise, Yong et al reported gas separation from a liquid using a microfluidic device in which the mesh was fabricated using a femtosecond laser. 50 The absence of a membrane in these devices also simplifies the separation process and eliminates the need for maintenance.…”

Fabrication of a paper-based facile and low-cost microfluidic device and digital imaging technique for point-of-need monitoring of hypochlorite

“…Amornsakchai et al reported membraneless gas separation using a μPAD for indirect measurement of OCl − via acidification of OCl − generating chlorine gas using 6 M HCl solution. 13 However, chromophore incorporation on the polystyrene-coated paper substrate and subsequent onsite detection of OCl − have yet to be established with real-time environmental samples. Therefore, a direct, rapid, sensitive, and portable μPAD based OCl − detection method remains indispensable.…”

“…Although miniaturized commercial spectrophotometers exist in the market, a digital camera (as a detector) based imaging technique has emerged as an elegant approach for monitoring analytes of interest. 7,13,14 This simple and versatile approach has recently been applied to µPADs, where the concentration of a particular analyte can be monitored with the image information obtained from the colour chart. In this work, quantitative analysis of OCl − has been performed by measuring the change in colour intensities of the probes upon reaction with OCl − in the sample reception zone.…”

Synthesis, determination, and bio-application in cellular and biomass-bamboo imaging of natural cinnamaldehyde derivatives

“…As a reactive oxygen species (ROS), hypochlorite anion (ClO − ) can be obtained by the oxidative reaction of H 2 O 2 and Cl − ( Dong et al, 2020 ; Pei et al, 2020 ; Elmas, 2022 ; Pei et al, 2022 ), which is widely used in the field of sterilization agents, bleaching agents, and deodorants ( Wang et al, 2015 ; Huang et al, 2016 ; Dong et al, 2017 ; Sitanurak et al, 2018 ; Mahdizadeh et al, 2020 ). Nevertheless, there is much evidence that excessive generation of ClO − can cause diseases, such as cancer, atherosclerosis, neuron degeneration, cardiovascular disease, lung injuries, and kidney disease ( Huang et al, 2016 ; Zhang et al, 2017 ; Feng et al, 2018 ; Song et al, 2018 ; Ma et al, 2020 ; Zhang et al, 2020 ).…”