摘要
针对黄磷生产尾气具有强化学活性和腐蚀性的特点,选择了TDX—01型碳分子筛色谱柱,采用气相色谱法测定黄磷尾气中的CO2。实验结果表明:黄磷尾气中高浓度的CO2用TCD检测器检测,CO2体积分数在0.1%~10%时,检测下限可达到0.05%,方法的平均回收率为93.6%~104.1%,相对标准偏差为2.1%~3.2%;净化后黄磷尾气中的微量CO2经Ni催化甲烷化转化后用FID检测器测定,CO2体积分数在1.0×10^-7~1.0×10^-4时,方法的检测下限可达到5.0×10^-8,相对标准偏差为1.63%。
Because of the strong chemical activity and causticity of yellow phosphorus tail gas, CO2 in yellow phosphorus tail gas was determined by gas chromatography with TDX-01 carbon molecular sieve chromatographic column. The experimental results show that: CO2 with high concentration (0.1% - 10% of CO2 volume fraction) in the yellow phosphorus tail gas can be determined by TCD ( thermal conductivity detector), and the detection limit of the method is 0.05%, the average recovery is 93. 6% - 104.4%, the relative standard deviation is 2.1% - 3.2% ; The trace CO2 ( with 0.1 × 10^-6 ~1.0 × 10^-4 of CO2 volume fraction) in the treated yellow phosphorus tail gas can be determined by FID (flam ionization detector) after Ni-catalytically transformed to methane, and the detection limit of the method is 0.05× 10^-6, the relative standard deviation is 1.63%.
出处
《化工环保》
CAS
CSCD
北大核心
2010年第5期458-461,共4页
Environmental Protection of Chemical Industry
关键词
气相色谱
黄磷尾气
色谱柱
二氧化碳
分析方法
gas chromatography
yellow phosphorus tail gas
chromatographic column
carbon dioxide
analysis method