【摘要】 本文研究了富集柱类型、富集温度和色谱操作条件等因素对二次富集气相色谱法测定环境中痕量PH3的影响,并将其应用于青岛大气和东海陆架沉积物中PH3的测定,取得了较为满意的结果。该方法具有操作简单、灵敏度高、分析速度快、干扰少等优点,其检测限为0.02 pg、精密度2.0%、线性范围为0.56 pg~5.6 ng。用此方法测定了冬季东海大陆架表层沉积物中PH3含量为(0.51~23.10)×10-9,其分布明显受到人类活动的影响,研究结果还表明东海沉积物中的PH3是海洋中磷的潜在来源之一;青岛崂山大气中PH3日变化趋势说明大气中PH3明显受光照的影响。更多还原

【Abstract】 A gas chromatographic method is usepresented to determine the trace phosphine(PH3) in the natural environments by GC withusing capillary column as a trap.The influence of cryogenic trap and chromatographic operation conditions were studied to obtain the best results.The method has several characteristics such as simple,easy to handle,high analysis speed and little interference.The method was applied successfully to determine phosphine in the atmosphere of Qingdao and sediments in the East China Sea.The results showed that the concentrations of phosphine in sediment ranged from 0.51×10-9 to 23.10×10-9 and the distribution of phosphine in surface sediment is affected by the human activities.The Ddaiely variation of phosphine in the air of Qingdao showedsuggests that the phosphine in the air is controlled by the solar radiation.更多还原