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26. Recommended Practices for More Accessible Quantification of Low‐Concentration Aqueous Phase Products in Photo/Electrocatalytic CO2/N2 Fixation.

Author

Li, Dong, Xu, Ning, Zhao, Yunxuan, Shi, Run, Zhou, Chao, Zhang, Li‐Ping, and Zhang, Tierui

Subjects
NUCLEAR magnetic resonance, CARBON fixation, CHEMICAL synthesis, NITROGEN fixation, ELECTRONIC data processing, SUSTAINABLE development
Abstract

The sustainable development of novel photo/electrocatalytic CO2/N2 fixation for chemical synthesis is predicated on reliable, accurate, and rapid detection methods. The directness, specificity, and simultaneity in detecting multiple molecules of the 1H nuclear magnetic resonance (1H‐NMR) technique have aroused increasing interest in photo/electrocatalysis. Thus far, two data processing means have been developed for the precise 1H‐NMR data processing: peak integral and peak height methods. However, few detailed studies offer a clear steer for choosing data processing methods for the concerned products in photo/electrocatalysis, especially the guidelines under the conditions of baseline distortions induced by water suppression. Herein, the feasible practices are restudied to quantify classical products in photo/electrocatalytic CO2/N2 fixation. On the basis of experimental results, 1H‐NMR data processing methods (peak integral and peak height methods) are found to convey different applicability for the different low‐concentration products, while introducing water suppression in the 1H‐NMR tests. The essential reason can be attributed to the baseline distortions caused by the water suppression, which arouses differentiated deviation of peaks with different peak widths. With this in mind, an accessible quantification criterion is provided to avoid superfluous input of time or cost in precise 1H‐NMR detection of low‐concentration products. [ABSTRACT FROM AUTHOR]

Published
2024
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44. A new species of the newt genus Hypselotriton (Amphibia, Urodela, Salamandridae) from Jiangxi Province, southeastern China.

Author

Jiang, Zhihao, Huang, Song, Fan, Qiangyong, Cheng, Lin, Gong, Yanan, Cui, Zhangbo, Zhang, Tierui, Lan, Wenjun, Zou, Zhian, Huang, Xuanzhi, Raffaëlli, Jean, and Chen, Jinmin

Subjects
NADH dehydrogenase, NUMBERS of species, SALAMANDERS, SALAMANDRIDAE, AMPHIBIANS, TOES
Abstract

A new newt species, Hypselotriton huanggangensis sp. nov., is described based on nine specimens collected from Huanggangshan Mountains, Yanshan County, Jiangxi, China. Morphologically, the new species is characterized by the combination of nine external characters: (1) obvious black patches with clear boundaries on the whole body; (2) ground color of the dorsal body tan; (3) ground color of venter bright orange; (4) skin rough; (5) vertebral ridge weak; (6) fingers and toes overlapping when forelimb and hindlimb adpressed towards each other along body; (7) postocular orange spot absent; (8) small white warty glands around the eye; (9) two discontinuous longitudinal lines formed by white warty glands from neck to lateral parts of tail. Molecularly, the new species forms an independent clade with strong support in the phylogenetic trees of the genus based on the mitochondrial locus of NADH dehydrogenase subunit 2 (ND2) gene fragments. The new species distinctly differs from H. fudingensis by differences in its body measurements, vertebral ridge, dorsal black patches, and ventral black patches. Furthermore, the new species and H. fudingensis are geographically isolated by a series of high mountain ranges, including the Wuyishan and Jiufengshan Mountains. The number of Hypselotriton species is now 11. [ABSTRACT FROM AUTHOR]

Published
2024
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