The Ultraviolet Absorption Spectra of Pyrazoles and 1-Carboxamidepyrazoles and Their Application

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	The Ultraviolet Absorption Spectra of Pyrazoles and 1-Carboxamidepyrazoles and Their Application
	Shi, YF ; Wu, ZJ ; Chen, LJ ; Chen, G ; Liu, YP ; Mang, LL
刊名	SPECTROSCOPY AND SPECTRAL ANALYSIS
	2009
卷号	29 期号:3 页码:781-785
关键词	UV absorption spectra Pyrazole Nitrification inhibitor
ISSN号	1000-0593
通讯作者	Wu, ZJ, Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China
中文摘要	The ultraviolet absorption spectra of pyrazoles and 1-carboxamidepyrazoles were studied. The results indicated that substitution in the 3 or the 5 position it leads to a bathochromic shift of the position of the maximum absorption by about 3-4 nm, whereas in the 4 position leads to a much larger bathochromic shift (>10 nm). The introduction of carboxamide causes a bathochromic shift of the position of the maximum absorption by about 20-26 nm. Its also leads to an increase in molar extinction coefficient by about 2-3 times, So UV methods were established for determining the contents of pyrazoles and their derivations. Using these methods, the content of 3,4-dimethylpyrazole phosphate (DMPP) in stabilized urea was determined to be 1.15% of uren-N. the hydrolytic half lives of 1-carboxamide-3-methylpyrazole (CMP) in water solution at 20, 25 and 30 degrees C were 48, 30 and 16 h, respectively, and the extraction percentage of nitrification inhibitor 3-methylpyrazole phosphate (MPP) in 3 soils by 3 different extractants were ranged from 63.2% to 89.2%.
学科主题	Spectroscopy
收录类别	SCI
语种	中文
WOS记录号	WOS:000263801800048
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54215]
专题	沈阳应用生态研究所_沈阳应用生态研究所_期刊论文
推荐引用方式 GB/T 7714	Shi, YF,Wu, ZJ,Chen, LJ,et al. The Ultraviolet Absorption Spectra of Pyrazoles and 1-Carboxamidepyrazoles and Their Application[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2009,29(3):781-785.
APA	Shi, YF,Wu, ZJ,Chen, LJ,Chen, G,Liu, YP,&Mang, LL.(2009).The Ultraviolet Absorption Spectra of Pyrazoles and 1-Carboxamidepyrazoles and Their Application.SPECTROSCOPY AND SPECTRAL ANALYSIS,29(3),781-785.
MLA	Shi, YF,et al."The Ultraviolet Absorption Spectra of Pyrazoles and 1-Carboxamidepyrazoles and Their Application".SPECTROSCOPY AND SPECTRAL ANALYSIS 29.3(2009):781-785.