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【目的】选用三种不同孔径分子筛吸附剂对冬季奶牛圈舍中CO2、NH3和H2S吸附试验。【方法】用便携式气体检测仪检测排风扇口排出的CO2、NH3和H2S浓度，悬挂吸附剂的为试验组，不悬挂吸附剂的为对照组。两者之差即为吸附剂XF-1、XF-2、XF-3的吸附浓度，根据实际测得的气温、气压、风速，利用理想气体状态方程推导出公式，将mg/kg换算为mg/m3。当试验组与对照组浓度无差异性时停止试验。【结果】1 kg XF-1吸附剂可吸附CO2 70.91 g、NH3 2.29 g、H2S 1.57 g；1 kg XF-2吸附剂可吸附CO2 75.49 g、NH3 2.65 g、H2S 1.65 g；1kg XF-3吸附剂可吸附CO2 85.95 g、NH3 2.87 g、H2S 1.88 g。【结论】三种吸附剂对CO2、NH3和H2S气体的吸附量与圈舍内相应气体浓度正相关性显著（P<0.05），与温湿度负相关性不显著（P>0.05）。吸附剂的吸附能力与总孔体积、比表面积成正比，吸附剂XF-3对气体吸附能力最强，吸附剂XF-1最弱。三种吸附剂在1～3 h吸附效果最好，此后缓慢下降，吸附剂XF-1悬挂30 h需要更换，吸附剂XF-2悬挂27 h需要更换，吸附剂XF-3悬挂25 h需要更换。
【Objective】 Adsorption experiments of CO2, NH3 and H2S in pens in winter dairy cows were carried out using three different molecular sieve adsorbents. 【Method】 The concentrations of CO2, NH3 and H2S expelled from the exhaust fan were measured by a portable gas detector. The control group was suspended with the adsorbent and the control group without suspended adsorbent. The difference between them is the adsorption concentration of adsorbent XF-1, XF-2 and XF-3. According to the actual measured temperature, pressure and wind speed, the equation is derived from the ideal gas equation of state, / m3. When the test group and control group no difference in concentration when the test was stopped. 【Result】 The results showed that 1 kg XF-1 adsorbent could adsorb CO2 70.91 g, NH3 2.29 g, and H2S 1.57 g; 1 kg XF-2 adsorbent could adsorb CO2 75.49 g, NH3 2.65 g, H2S 1.65 g; 1 kg XF-3 adsorbent can adsorb CO2 85.95 g, NH3 2.87 g, H2 S 1.88 g. 【Conclusion】 The adsorption of CO2, NH3 and H2S gas by three adsorbents is positively correlated with the corresponding gas concentration in the house (P <0.05) Negative correlation with temperature and humidity was not significant (P & gt; 0.05). Adsorbent adsorption capacity and total pore volume, specific surface area is proportional to adsorbent XF-3 on the gas adsorption capacity of the strongest, the weakest adsorbent XF-1. The adsorbents had the best adsorption effect in 1 ~ 3 h and then slowly descended. The adsorbent XF-1 was suspended for 30 h, and the adsorbent XF-2 was suspended for 27 h, and the adsorbent XF-3 was suspended for 25 h. .