摘要
luminol水溶液的吸收光谱有3个吸收带,它们的最大吸收波长分别是220.7nm、294.4nm和351.4nm,超声空化作用后主要呈弱增色效应,但其吸收光谱的基本形状无明显变化。luminol-NaOH水溶液经超声空化作用后也有较弱的增色效应和减色效应,但不论是否经历超声空化作用,其吸收光谱都与luminol水溶液的吸收光谱相似。而在luminol-NaOH-Cu2+水溶液中,如果Cu2+的浓度提高到1.8×10-4mol/l时,则超声空化作用后,其吸收光谱在220～350nm区间出现明显偏离,吸收度有较大增加。
For the aqueous luminol solution, three absorption bands with maximum. adsorption wavelength λ max 220.7、294 4 and 351.5nm respectively have been detected, with the exception of a little hyperchromic effect, the absorption spectrum contour of the solution cavitated by an ultrasound with a frequency of 1.45 MHz has been certificated to be unchanged. The absorption spectra of the aqueous luminol NaOH solution and its cavitated solution are similar to the that of the aqueous luminol solution, only the cavitated solution appearing a bit of hyper and hypo chromic effects.For increasing the concentration of Cu 2+ to 1.8×10 -4 mol/l, the difference in some degree exists in luminol NaOH Cu 2+ solution and its cavitated solution, that is the absorption degree of the cavitated solution rising up apparently between 220~350nm, however, the absorption spectrum contour of the solution are still similar to the that of the aqueous luminol solution.
出处
《声学技术》
CSCD
2000年第1期23-25,共3页
Technical Acoustics
