焦炉降尘中多环芳烃的毛细管超临界流体色谱分析

研究了９个多环芳烃混合样品的超临界流体色谱分析条件，并与毛细管气相色谱法做了比较。超临界流体色谱的条件是：柱温１１０℃；程序升压９．０ＭＰａ（５ｍｉｎ）１．４ＭＰａ／ｍｉｎ２８．０ ＭＰａ。各组分保留时间的相对标准偏差为 １．４％～３．０％，定量分析的相对误差为１．４％～６．０％，比毛细管气相色谱法具有明显的优越性。试验了焦炉降尘样品，发现该样品主要由双环和三环的多环芳烃类物质组成。其中萘含量约占８０％。

Capillary Supercritical Fluid Chromatographic Analysis of Polycyclic Aromatic Hydrocarbons in Airborne Dust From Tar Furnace

A mixture of nine polycyclic aromatic hydrocarbons (PAH) including naphthalene. acenaphthylene, phenanthrene, anthracene, fluoranthene, pyrene, benzofluorene, benzoa] pyrene and benzoghi]perylene was separated by capillary supercritical fluid chromatograpy (CSFC) at low oven temperature with pressure gradient technique. The relative standard de- viations of retention time were in the range of 1. 4-3. 0 %, the relative errors of quantitative analysis were in the range of 1. 4-6. 0%. The CSFC method was also compared with the capillary gas chromatographic method. The analysis of airborne dust from tar furnace by CS- FC method shows that it mainly consists of two-ring and three-ring PAH, in which naphtha- lene accounts for about 80%.