Distribution of polycyclic aromatic hydrocarbons in some selected tubers grown in farmlands in Alakahia and Eleme communities, Rivers, Nigeria

O. Joy, C. Okonkwo
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Abstract

The present study investigated the level of polycyclic aromatic hydrocarbon (PAH) in three commonly consumed tubers grown in farmlands in two communities- Alakahia and Eleme, Rivers state, Nigeria. The total PAH concentrations in the tubers ranged from 2.94 ± 0.26 to 70.83 ± 1.56 -µg/kg. Pyrene was the predominant PAH in most of the tuber samples from Alakahia and Eleme communities. The PAH profile in the tuber samples were dissimilar at both communities when compared. The Low molecular weight PAH to High molecular weight PAH ratio (LMW-PAH/HMW-PAH) showed that the high molecular PAH were predominant in the tubers thus suggesting that the source of PAH in the tubers are of pyrogenic origin.
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尼日利亚河流地区Alakahia和Eleme社区农田种植的部分块茎中多环芳烃的分布
本研究调查了尼日利亚河流州Alakahia和Eleme两个社区农田种植的三种常见块茎中多环芳烃(PAH)的水平。块茎中多环芳烃总浓度在2.94±0.26 ~ 70.83±1.56µg/kg之间。在Alakahia和Eleme群落的大部分块茎样品中,芘是主要的多环芳烃。在两个群落中,块茎样品中的多环芳烃谱是不同的。低分子量多环芳烃与高分子量多环芳烃的比值(LMW-PAH/HMW-PAH)表明块茎中高分子多环芳烃占主导地位,说明块茎中多环芳烃的来源是热原性的。
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