原位低场核磁共振弛豫法定量监测光催化Cr(Ⅵ)还原反应
牛星星,白志杰,杨翼,高杨文,王雪璐,姚叶锋

A Quantitative Study of Photocatalytic Reduction of Cr(Ⅵ) by Operando Low-Field NMR Relaxometry
Xing-xing NIU,Zhi-jie BAI,Yi YANG,Yang-wen GAO,Xue-lu WANG,Ye-feng YAO
表1 LF-NMR弛豫法和紫外分光光度法分别测得的Cr(Ⅲ)体系和Cr(Ⅵ)-Cr(Ⅲ)混合体系的T2值和吸光度
Table 1 T2 values and absorbance values and in Cr(Ⅲ) and Cr(Ⅵ)-Cr(Ⅲ) systems measured by LF-NMR and ultraviolet spectroscopy, separately
紫外分光光度法Cr(Ⅲ)体系紫外分光光度法Cr(Ⅵ)-Cr(Ⅲ)混合体系LF-NMR法Cr(Ⅲ)体系LF-NMR法Cr(Ⅵ)-Cr(Ⅲ)混合体系
Cr(Ⅲ)浓度/(mg/L)Cr(Ⅲ)-EDTA吸光度Cr(Ⅵ)-Cr(Ⅲ)浓度/(mg/L)Cr(Ⅲ)-EDTA吸光度Cr(Ⅲ)浓度/(mg/L)T2/sCr(Ⅵ)-Cr(Ⅲ)浓度/(mg/L)T2/s
10.00720-0011.52820-03.105
50.02415-50.02150.62315-50.604
100.03810-100.044100.37510-100.363
150.0565-150.056150.2765-150.267
200.0660-200.066200.2160-200.216