Kjeldahl Method for Nitrogen Determination - Kjeldahl method has been specifically developed for determining the nitrogen contents in organic and inorganic substances. Learn about all the steps involved in this method with detailed descriptions here
Kjeldahl reaction is mostly used to obtain nitrogen. The method involves the conversion of nitrogen into ammonium sulfate by digestion with sulfuric acid; later it alkalizes the solution and finally determines the ammonia obtained by the distillation process. As a final stage volume of standard acid...
The Dhulesia equation for ASTM distillation interpolation was modified according to the essence of ASTM and TBP distillation and EFV curves. 修正后的模型可以用于恩氏蒸馏曲线、实沸点蒸馏曲线和平衡气化曲线的数学模拟和个别遗缺馏出(或气化)温度的预测,用直馏汽油、煤油、轻柴油和重柴油等馏分的恩氏蒸馏...
The ratios between the means for the Kjeldahl and Dumas (K/D) protein values ranged from 0.66 to 1.03. The conversion equation y=0.00536+0.97188x (R 2=0.9997) was developed and validated to convert from Dumas to kjeldahl protein concentrations....
However, Kawasaki et al describe a complex equation for selecting an irradiation time and an irradiation interruption period, to control foaming and bumping at an early stage of digestion. Noting several shortcomings of Abu-Samra et al's fume removal apparatus including deterioration of the ...
zhengliufa蒸馏法(e,aporation method)使海水受热沸腾产生蒸汽,然后冷凝为淡水,是最早采用的热过程海水淡化技术。蒸馏法优点是技术成熟,适用范围广,产水水质好,可利用低位热能和易大型化等。缺点是对中低盐度的水蒸馏能耗高,防腐和防垢要求严等。蒸馏法最常用的是多级闪蒸、多效蒸发和压汽蒸馏等几种类型。 多级闪...
The Dhulesia equation for ASTM distillation interpolation was modified according to the essence of ASTM and TBP distillation and EFV curves. 修正后的模型可以用于恩氏蒸馏曲线、实沸点蒸馏曲线和平衡气化曲线的数学模拟和个别遗缺馏出(或气化)温度的预测,用直馏汽油、煤油、轻柴油和重柴油等馏分的恩氏蒸馏...
When the equation developed using cow milk was applied to goat, sheep, and water buffalo milks, it correctly predicted the volume of reagents needed to achieve a final NCN filtrate pH of 4.6 at 38掳C. We also verified as part of this work that the ability to measure NPN content of ...
When the equation developed using cow milk was applied to goat, sheep, and water buffalo milks, it correctly predicted the volume of reagents needed to achieve a final NCN filtrate pH of 4.6 at 38掳C. We also verified as part of this work that the ability to measure NPN content of ...