DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBs) IN SURFACE WATER IN ONDO STATE NIGERIA

T.F Ediagbonya
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Abstract

Polychlorinated biphenyl compounds (PCBs) were included to the Stockholm Convention's list of typical persistent organic pollutants on May 22, 2001. (POPs). Humans have produced PCBs, which are pervasive in the environment. They are a concern for people all around the world because of their toxic, bioaccumulative, long-lasting, hydrophobic, and transboundary characteristics. The study's goals included describing how PCBs are distributed in surface water and evaluating how certain physiochemical factors affect PCB concentrations. Five separate Okitipupa locations—OAUSTECH, Igodan, Okunmo, Idepe, and Lebi/Ofe River—had their water samples taken. The overall average concentration of PCBs discovered in the samples taken from five (5) distinct places was determined to be as follows: OAUSTECH (5.720.13), Igodan (5.520.00), Okunmo (3.480.03), Idepe (21.830.02), and Lebi/Ofe (0.160.00), with their combined probability being determined to be 0.001. Twenty-five (25) PCB congeners were examined using a gas chromatography-electron capture detector (GC-ECD). The majority of congeners were below the detection threshold at every site. Total PCB values varied from 0.16 g/L to 21.83 g/L. The correlation between the overall level of polychlorinated biphenyls and the total organic carbon was positive (0.214), but it was weak (PCBs) and pH, positive (0.096) but poor correlation between the electrical conductivity, and a positive (0.220). The levels found in this investigation, with the exception of one area, were obviously lower than the 0.5μg/l level advised by the WHO. The water's concentration of polychlorinated biphenyls (PCBs) is not significantly impacted by the physicochemical characteristics, and the water is safe to use for household purposes.
尼日利亚昂多州地表水中多氯联苯的测定
2001年5月22日,多氯联苯化合物被列入《斯德哥尔摩公约》的典型持久性有机污染物清单。(弹出)。人类产生的多氯联苯在环境中普遍存在。它们因其毒性、生物蓄积性、持久性、疏水性和跨界性而受到全世界人民的关注。该研究的目标包括描述多氯联苯在地表水中的分布情况,并评估某些物理化学因素如何影响多氯联苯的浓度。五个不同的Okitipupa地点- oaustech, Igodan, Okunmo, Idepe和Lebi/Ofe河-采集了水样。从5个不同地点采集的样本中发现的多氯联苯的总体平均浓度为:OAUSTECH(5.720.13)、Igodan(5.520.00)、Okunmo(3.480.03)、Idepe(21.830.02)和Lebi/Ofe(0.160.00),其组合概率为0.001。用气相色谱-电子捕获检测器(GC-ECD)检测了25种PCB同系物。大多数同系物在各位点均低于检测阈值。总PCB值从0.16 g/L到21.83 g/L不等。多氯联苯总体水平与总有机碳呈正相关(0.214),与pH呈弱相关(0.096),与电导率呈正相关(0.220),与电导率呈正相关(0.220)。本次调查发现,除一个地区外,其他地区的浓度均明显低于世界卫生组织建议的0.5μg/l。水质的多氯联苯(PCBs)浓度不受理化特性的显著影响,可安全用于家庭用途。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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