| It was found that the colour producing products have a Soret band at 865 nm, an apparent molar absorptivity of 2.1×104, an over 24 hour stability at room temperature, a linearity range of 0—80 μg As in a volume of 10 ml and a correlation coefficient of 0.9990.The use of the Qiu's Arsenic Analyzer allows arsenic in water to be reduced as AsH3, giving off from water. None of Al, Mn, Zn, Cd, Fe, Co, Ni, Cu, Sn, Sb, Bi and S2- in a reasonable amount can interfere with the determination. This method has been applied to determining arsenic at a microgramme level in surface water and wastewater with satisfactory results. |
