• 主题
高级搜索  >
历史搜索 清空历史
首页> 美国政府科技报告 >Comparison of the Solubility of Plutonium-238 and Plutonium-239 Dioxide in in Vitro Bovine Ruminal-Gastrointestinal Fluids
【24h】

Comparison of the Solubility of Plutonium-238 and Plutonium-239 Dioxide in in Vitro Bovine Ruminal-Gastrointestinal Fluids

机译：钚-238和钚-239二氧化物在体外牛瘤胃 - 胃肠液中溶解度的比较

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The alimentary solubility and behavior of plutonium-238 dioxide and plutonium-239 dioxide were compared in an artificial rumen and simulated bovine gastrointestinal fluids. Rumen juice was augmented with plutonium-238 dioxide particles of 0.096- mu m count median diameter or plutonium-239 dioxide particles of 0.121- mu m count median diameter and incubated for 24 hours. This juice was successively converted by the addition of bile and enzymes and adjustment of the pH to simulate the digestive stages of the abomasum, duodenum, jejunum, and lower small intestine. Fluid samples were collected from each of these digestive stages and radioanalyzed for soluble plutonium-238 or plutonium-239. Shortly after the addition of plutonium-238 dioxide to rumen juice, an average of 0.12 percent became soluble while 0.33 percent became soluble following the incubation period. The solubility increased to 0.05 percent following the abomasal incubation period and increased to 0.79 percent and 1.10 percent when the fluid was maintained at pH 4.0 and 5.0, respectively, during the duodenal phase. The solubility increased to 3.20 percent following the addition of bile and enzymes and adjustment of the pH to 6.0 and to 3.62 percent following the 2-hour jejunal incubation period. Plutonium-239 dioxide was 0.00123 percent soluble shortly after being administered to the rumen juice while 0.00256 percent became soluble following the incubation period. Following the abomasal incubation period the solubility decreased to 0.00189 percent and then increased to 0.00604 percent when the fluid was held at pH 4.5 to simulate the duodenum. There was a further increase in solubility to 0.0138 percent following the jejunal incubation phase. (ERA citation 05:014228)

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号