A very sensitive flow system for the direct determination of copper in natural waters based on spectrophotometric detection

Ion-Exchange Reaction of Silver(I) and Copper(II) in Optical Sensors Based on Thiaglutaric Diamide

“…[17][18][19][20] Increases in the copper concentration in water and plants have resulted from industrial and domestic waste discharge, refineries, disposal of mining washing, and the use of copper as a base compound for antifouling paints. Although many analytical methods have been developed for the determination of copper, [21][22][23][24][25] there is a lack for an in situ measurement of the free copper(II) concentration.…”

An Ultraviolet-Visible (UV) Photometry System Based on the PDMS-based Microfluidic Chip

“…collected the samples of the natural water within 1 hour to detect the content of copper in water on the platform of the microfluidic chip by using the photometry method. The detection limit could reach up to 4.6μg/L and the average error is 5.32% [3]. Compare with other detection methods, photometry method based on the microfluidic chip technology can directly detect the samples without adding additional reagents, and it has the characteristics of high feasibility and simple operation.…”

Environmental method for spectrophotometric determination of copper(II)

“…Reedy proposed another method for spectorophotometric determination of copper but with a narrow range of determination and low molar absorptivity than our method 1.6 )10 4 mol (1 cm (1 L (23). Pinto et al used the flow system, which has high RSD (2.11%) with more steps in the procedure for optimization (24). Shamsa and Barazandeh-Tehrani's method has a high detection limit of 13 ng L Á1 with using chloroform (hazard solvent) (25 …”