|
|||||
|
|
| 缓释尿素中硝化抑制剂DMPP的气相色谱法测定 | |
| 引用本文： | 史云峰,武志杰,陈利军,左秀锦,房娜娜.缓释尿素中硝化抑制剂DMPP的气相色谱法测定[J].分析试验室,2008,27(5):61-64. |
| 作者姓名： | 史云峰 武志杰 陈利军 左秀锦 房娜娜 |
| 作者单位： | 1. 中国科学院沈阳应用生态研究所,沈阳,110016;中国科学院研究生院,北京,100039 2. 中国科学院沈阳应用生态研究所,沈阳,110016 3. 大连大学,大连,116622 |
| 基金项目： | 中国科学院知识创新工程项目 , 国家科技支撑计划 |
| 摘 要： | 建立了一种检测缓释尿素中吡唑类硝化抑制剂DMPP的气相色谱法。DMPP在尿素水溶液中可定量转化为DMP,从5种有机溶剂中选择氯仿作为DMP的萃取剂,并采用加入KCl盐析的方法将萃取率从96.1%提高到99.5%。本文采用吡啶作为内标物,通过DB-1701气相色谱柱,氢火焰离子化检测器(FID)定量检测氯仿溶液萃取相中的DMP。萃取率为98.8%~100.4%;添加回收率为98.1%~99.5%;RSD为0.84%~1.6%。应用本法测定自制缓释尿素中DMPP质量分数为0.44%。 |
| 关 键 词： | 气相色谱 缓释尿素 硝化抑制剂 |
| 文章编号： | 1000-0720(2008)05-061-04 |
| 修稿时间： | 2007年3月2日 |
Determination of nitrification inhibitor DMPP in slow-release urea by gas chromatography |
|
| SHI Yun-feng,WU Zhi-jie,CHEN Li-jun,ZUO Xiu-jin,FANG Na-na.Determination of nitrification inhibitor DMPP in slow-release urea by gas chromatography[J].Chinese Journal of Analysis Laboratory,2008,27(5):61-64. | |
| Authors: | SHI Yun-feng WU Zhi-jie CHEN Li-jun ZUO Xiu-jin FANG Na-na |
| Abstract: | A new method is developed to determine nitrification inhibitor DMPP in slow-release urea by gas chromatography based on the transformation of DMPP to DMP in urea solution.Chloroform was found to be the best extractant in five organic solvents tested.The efficiency of extraction could increase from 96.1% to 99.5% by the addition of KCl for salting-out.Pyridine was applied as the internal standard and a DB-1701 colume and a flame-ionization detector(FID) were used for the GC determination of DMP.The results showed that the extraction efficiencies were from 98.8% to 100.4%,the recoveries were from 98.1% to 99.5%,and the coefficient of variation was from 0.84% to 1.55%,respecticely.The DMPP content of slow-release urea determined by using this method was 0.44%. |
| Keywords: | Chromatography Slow-release urea Nitrification inhibitor |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |