Greener analytical method for the determination of copper(II) in wastewater by micro flow system with optical sensor

Design of a novel optical sensor for determination of trace amounts of copper by UV/vis spectrophotometry in the real samples

“…Some copper ion optodes have been constructed and used for determination of Cu (II) using the variety of reagents over the last decade. These reagents include salophen [13], dithizone [14], PAN [15][16][17], pyrocatechol violet [18], zincon [19][20], fast sulphon black F (FSBF) [21], cupron [22], nitroso-R-salt [23], 2,4 dinitrosoresorcinol (DAN) and PAR [24], 4-decyloxy-2-(2-pyridylazo)-1-naphthol (DPAN) [25][26], Lucifer yellow [27], bathocuproine [28] and calcein [29]rhodamine 6G [30].…”

Double-sided Microfluidic Device for Speciation Analysis of Iron in Water Samples: Towards Greener Analytical Chemistry

“…A plethora of miniaturized analytical systems, based on the LOC concept, 25,26 have been described, incorporating such functions as integrated sample injection, sample preparation, and chemical separation and detection. Indeed, such devices have enormous applications in various fields, such as bioassays 27 and diagnosis, 28 forensics, 29 environmental monitoring, [30][31][32][33] and pharmaceuticals and supplement research. [34][35][36] Many of the miniaturized analytical systems developed for heavy metal monitoring use micro-flow analysis (μFA), and include a sample injection, perform on-chip reactions taking place in a microchannel network, and contain chip-based detection capabilities.…”

“…[34][35][36] Many of the miniaturized analytical systems developed for heavy metal monitoring use micro-flow analysis (μFA), and include a sample injection, perform on-chip reactions taking place in a microchannel network, and contain chip-based detection capabilities. 30,31 Perhaps due to the limited size of microchips and the intrinsic problems in sample and reagent manipulation, only a few μFA systems have been designed for the simultaneous analysis of multiple analytes. Moreover, most of these systems rely on a single detection channel due to the high cost of commercial optical detectors and the limited space on microdevices.…”

Development of an optical redox chemical sensor for nitrite determination

“…However, it has drawn much attention recently focusing on the development of chemical processes that minimized or eliminate the use of toxic substances in the prevention of environmental pollution and human hazards. 17 During the last decade, the development and construction of optical chemical sensors or optodes has increased considerably. They are more interested by analytical chemists because they are extensively employed in routine and research laboratories by the capability to decrease the reagent consumption.…”