3.The hue of that portion of the visible spectrum lying between blue and violet, evoked in the human observer by radiant energy with wavelengths of approximately420 to450 nanometers; a dark blue to grayish purple blue.
4.The color removal rate of 5 mg/L ISD solution in 20 minutes reached 98.9%,about 7 times higher than the decoloration rate without Fe~(2+) ions(11.9%).
在0.1 mmol/L Fe2+的作用下,高压脉冲放电在20 m in内可以将5 mg/L靛蓝二磺酸钠脱色98.6%,比不加Fe2+相同条件下的脱色效率(11.9%)提高了7倍多.收藏指正
