Diphenylcarbazine citrate was synthesized and a high-speed color reaction of the new reagent with Cr (VI) was developed and used to determine trace Cr (VI) in electroplating water. In acid medium, diphenylcarbazine c...Diphenylcarbazine citrate was synthesized and a high-speed color reaction of the new reagent with Cr (VI) was developed and used to determine trace Cr (VI) in electroplating water. In acid medium, diphenylcarbazine citrate reacted with Cr (VI) to form a magenta-colored complex. The molar absorptivity of the complex is 3.32×104 L·mol-1·cm-1 at 540 nm. Beer抯 law is obeyed for Cr (VI) in the range of 0.03~2.00 mg/L. Contents of Cr (VI) in electroplating waste water was determined in-situ and satisfactory results were obtained.展开更多
文摘Diphenylcarbazine citrate was synthesized and a high-speed color reaction of the new reagent with Cr (VI) was developed and used to determine trace Cr (VI) in electroplating water. In acid medium, diphenylcarbazine citrate reacted with Cr (VI) to form a magenta-colored complex. The molar absorptivity of the complex is 3.32×104 L·mol-1·cm-1 at 540 nm. Beer抯 law is obeyed for Cr (VI) in the range of 0.03~2.00 mg/L. Contents of Cr (VI) in electroplating waste water was determined in-situ and satisfactory results were obtained.
