colorimetrically
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CuRF coupounds are based on the combination of deprotonation and ICT mechanisms. The secondary amines conjugated to 1,8-naphthalimide could be deprotonated by Cu2+, and as a result, large red shifts in both absorption and fluorescence spectra were obtained, from which one could sense Cu2+ colorimetrically and ratiometrically.
CuRF 系列则是基于脱氢和ICT原理的结合，铜离子与受体的作用能够诱使共轭氮原子上的氢脱去，共轭氮原子显负电增强了对荧光团的供电能力，从而引起荧光波长的红移，同时也造成了吸收光谱的红移。
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The secondary amine conjugated to 1,8-naphthalimide could be deprotonated by Zn2+, and as a result, large red shifts in both absorption and fluorescence spectra were obtained, from which one could sense Zn2+ colorimetrically and ratiometrically.
锌离子与 ZnRF1-2的作用能够脱去共轭氮原子上的氢，从而使得荧光光谱和吸收光谱发生红移。
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The content of Ti, Nb and Ta are colorimetrically determined by using H_2O_2, acetone-potassium sulfocyanate and pyrogallic acid respectively.
实验中采用了H_2O_2比色测定Ti，用丙酮-硫氰酸钾比色测定铌，用焦性没食子酸比色测定钽。