| 摘 要： | A method for the determination of trace chromium(Ⅳ) in water by frow injection analysis with an amperometric detector has been developed. With a carrier solution of 1% NaCl and 0.1N HCl, chromium(Ⅵ) is determined in small sample volumes at a flow rate of 4.0mL/min, The applied potential is 100mV (vs. SCE). This method provides a detection limit of about 0.2μg/l, with a relative standard deviation of 1.6％. The method can be used for determination of chromium(Ⅵ) in natural water and industrial waste water.
|
