Solid‐phase extraction (SPE) and ultrasonic extraction (UE) techniques followed by Gas Chromatography‐Mass Spectrometry (GC‐MS) have been modified for qualitative and quantitative analysis of polycyclic aromatic hydrocarbons (PAHs) in water and sediment samples. Percentage recoveries of PAHs ranged from 85 to 121% in water and 82 to 117% in sediment samples. The limits of detection (LOD) and limits of quantification (LOQ) ranged from 0.02 to 0.2 and 0.05 to 0.5 µg/L for SPE while for UE, they were between 0.008–0.09 and 0.02–0.30 µg/kg, respectively. The concentration levels of PAHs (naphthalene, acenaphthene, acenaphthylene, fluorine, anthracene, phenanthrene and pyrene) detected in water samples were 0.071–2.7, 2.0–10.4 and 2.5–3.5 µg/L in wastewater, river water, and dam water, respectively. In sediment samples, concentration levels of PAHs were between 2.8–42.0 and 2.8–3.9 µg/kg, in river and dam sediment, respectively.

中文翻译：

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南非夸祖鲁纳塔尔省水和沉积物样品中多环芳烃的存在

固相萃取（SPE）和超声萃取（UE）技术以及气相色谱-质谱（GC-MS）已得到改进，可以对水和沉积物样品中的多环芳烃（PAH）进行定性和定量分析。在水中，多环芳烃的回收率在85％到121％之间，在沉积物样品中的回收率在82％到117％之间。SPE的检出限（LOD）和定量限（LOQ）分别为0.02至0.2和0.05至0.5 µg / L，而UE的分别为0.008–0.09至0.02–0.30 µg / kg。在废水，河水和大坝水中，水样中检测到的PAHs（萘，、,、氟，蒽，菲和pyr）的浓度分别为0.071–2.7、2.0–10.4和2.5–3.5 µg / L。 。在沉积物样本中