摘要
通过测定NO-2 、NO-3 、NH3·H2 O混合体系中各组分的吸收曲线 ,在 2 0 0nm至 2 40nm之间 ,选择合适的波长对 ,运用双波长等吸收点法、系数倍率法和三波长线性回归法 ,用数学分离代替化学分离 ,互相消除或掩蔽干扰组分 ,快速准确地测定了混合体系中待测组分的含量 .
According to the absorption curves of NO 2,NO 3 and NH - 3.H - 3O,appropriate wavelength pairs were chosen at 200～240 nm to determine the contents of NO - 2 and NO - 3 in mixed components.The methods of double wavelengths isosbestic point,multiple coefficients and three wavelengths linear regression were applied.A new way to determine the contents of NO - 2 and NO - 3 quickly and precisely in mixed components was achieved by the mathematics separation instead of the chemical separation.
