一级消除动力学（first-order kinetics）（恒 比消除）： 是指单位时间内转运或消除恒定比例的药物， 半衰期是定值。消除速度与血药浓度成正比。
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乙醇代谢速率分成两种：低浓度时为零级速率（zero-order kinetics) ；高浓度时为一级速率（first-order kinetics）。性别、年龄、体重、嗜酒性、营养状况、饮食情况、胃肠及肝功能状态都不同程度影响乙醇代谢。
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... 零级动力学 zero order kinetics; zero-order kinetics 一级动力论（学） first-order kinetics 零级动力学反应 zero order kinetic reaction ...
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first-order kinetics constant 反应速率常数
elimination of first order kinetics 一级动力学消除
apparent first-order kinetics 视在一级动力学
First-order kinetics equation 一级反应动力学方程
a pseudo-first-order kinetics 一级反应
followed the first-order kinetics 符合一级反应动力学
pseudo-first-order kinetics 准一级反应动力学 ; 假一级动力学
first order kinetics 一级消除动力学
a first order kinetics 为一级反应
CONCLUSIONS: The absorption of sirolimus assumed first-order kinetics with the passive diffusion absorption mechanism. And concentration and pH of the drug solution had no effect on the absorption kinetics.
结论:西罗莫司在大鼠肠道的吸收呈一级动力学过程,吸收机制为被动扩散;其在大鼠肠内的吸收不受药物浓度和pH影响;药物在十二指肠、空肠、回肠和结肠的吸收作用依次降低。
参考来源 - 西罗莫司大鼠在体肠吸收动力学研究·2,447,543篇论文数据，部分数据来源于NoteExpress
As the time went on, the residual weight of isoprocarb in soil decreased, which was in keeping with the first-order kinetics equation.
异丙威在大白菜和土壤中的残留量随着时间延长而递减，符合一级反应动力学方程。
As time went on, the residual contents of pirimicarb in the cucumber fruits and soil decreased, which accorded with the first-order kinetics equation.
抗蚜威在黄瓜及土壤中的残留量随着时间延长而递减，符合一级反应动力学方程。
The concentration, of all four prescriptions was eliminated as first-order kinetics, and their distribution appeared generally to be two-compartment model expect Sangju-Yin by this method.
结果除桑菊饮呈一房室模型分布外，其他三方均属二房室模型分布，四个方剂基本上均按一级动力学消除。
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