星际尘埃中的光化学反应——CO、NH₃和H₂O的光解
Photochemical reactions in interstellar grains photolysis of CO, NH3, and H2O.
作者信息
Agarwal V K, Schutte W, Greenberg J M, Ferris J P, Briggs R, Connor S, Van de Bult C P, Baas F
机构信息
Department of Chemistry, Rensselaer Polytechnic Institute, Troy, NY 12180-3590, USA.
出版信息
Orig Life Evol Biosph. 1985;16:21-40. doi: 10.1007/BF01808047.
A simulation of the organic layer accreted onto interstellar dust particles was prepared by slow deposition of a CO:NH2:H2O gas mixture on an Al block at 10 K, with concomitant irradiation with vacuum UV. The residues were analyzed by GC-MS, HPLC, and near IR; a reaction pathway leading from NH3 to complex alcohol, fatty acid, and amide products in 27 stages is postulated. The astronomical relevance and significance of the observations are discussed.
通过在10K下将CO:NH₂:H₂O气体混合物缓慢沉积在铝块上，并同时用真空紫外线照射，制备了附着在星际尘埃颗粒上的有机层模拟物。通过气相色谱 - 质谱联用仪（GC-MS）、高效液相色谱（HPLC）和近红外光谱对残留物进行了分析；推测了一个从氨开始经过27个阶段生成复杂醇、脂肪酸和酰胺产物的反应途径。讨论了这些观测结果的天文学相关性和意义。
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