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题名: Rate of controlled-release urea pervasion through membrane determined by ultraviolet spectrophotometry
作者: Zuo Xiu-jin;  Wang Zhen-xin;  Dai Xiao-min;  Zhou Yi;  Ma Xiao-jun
关键词: ultraviolet spectrophotometry ;  controlled-release urea ;  p-dimethylaminozenzaldehyde ;  determination
刊名: SPECTROSCOPY AND SPECTRAL ANALYSIS
发表日期: 2006-06-01
卷: 26, 期:6, 页:1151-1154
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Technology
类目[WOS]: Spectroscopy
研究领域[WOS]: Spectroscopy
英文摘要: Application of controlled-release nitrogenous fertilizers can improve the efficiency of fertilizers and reduce the environmental pollution. Controlled-release urea (coated urea) is one of the controlled-release nitrogenous fertilizers developed quickly in the recent years. The rate of controlled-release urea pervasion through membrane is the most important index of the capacity of controlled release. There is a maximum absorption at lambda=426 nm with complex in acidic solution, using p-dimethylaminozenzaldehyde as color reagent, and the absorbance exhibits a linear reponses to the urea concentration over the range of 7. 5-210 mu g (.) mL(-1). The method for determining the rate of controlled-release urea pervasion through membrane was realized through determining the content of urea in the liquor, the recovery efficiency of the method is 96. 1%-103.9%.
语种: 英语
WOS记录号: WOS:000238887300046
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140111
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dilian 116013, Peoples R China
2.Dalian Univ, Inst Environm & Chem Engn, Dilian 116622, Peoples R China
3.Chinese Acad Sci, Grad Sch, Beijing 100089, Peoples R China

Recommended Citation:
Zuo Xiu-jin,Wang Zhen-xin,Dai Xiao-min,et al. Rate of controlled-release urea pervasion through membrane determined by ultraviolet spectrophotometry[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2006,26(6):1151-1154.
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