| 秸杆燃烧中OCS的排放因子和排放估算 |
| 摘要点击 716 全文点击 872 投稿时间：1995-07-15 |
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| 中文关键词 羰基硫 生物质燃烧 排放因子 排放估算 |
| 英文关键词 carbonyl sulfide biomass buring emission factor |
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| 中文摘要 |
| 建立了痕量羰基硫采样及分析方法,利用低温预捕集和被捕集样直接释放进入分离柱技术,对压缩空气进行采样测定,得出了压缩空气中OCS约在2.94×10-3μg/L,方法精确度以标准误差系数计为±0.72%.利用此采样及分析方法对实验室规模的生物质封闭燃烧系统,稻草、玉米秸、麦杆燃烧过程中排出痕量OCS进行了采样分析,得出稻草、玉米秸、麦杆燃烧排气中OCS的排放量,以排放因子表示分别是:1.80g/t,2.75g/t,2.05g/t。详细统计了作物秸杆量,建立了全国各县各种作物秸杆燃烧释放痕量气总体和网格排放计算的数学模式。利用排放因子计算了几种主要作物秸杆燃气中OCS的释放量。 |
| 英文摘要 |
| A method of sampling and analysis for trace carbonyl sulfide has been described.The sample is trapped and concentrated at temperature of liquid N2 and liberated directly into a gas chromatographic column.The concentration of OCS in compressed air as determined as 2.94×10-3μg/L.The method accuracy expressed in term of standard deviation coefficient is ±0.72%.The emission factors of carbonyl sulfide,which were measured during the combustion of rice straws,maize stalks and wheat stalks in an enclosed combustion system,are 1.80,2.75 and 2.05g/t for rice straws,maize stalks,and wheat stalks.individual.Standard deviation coefficient are±6.67%,±8.36%,and 9.27% for rice straws,maal stalks,and wheat stalks, respectively.Distribution of the amount of crop residues burned in China is presented with a resolution 1°latitude×1°longitude.The amount of trace OCS could be calculated with their emission factors. |
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