Organochlorine pesticides and polychlorinated biphenyls in city drains in Makurdi, central Nigeria: Seasonal variations, source apportionment and risk assessment.

A study of seasonal variation, sources and potential risks of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in open city drains in Makurdi, Central Nigeria was carried out. OCPs and PCBs were quantified using gas chromatograph-mass spectrometer. The total (∑OCPs) concentrations (ngL) of OCPs in water was 2.

Levels of polybrominated diphenyl ethers in indoor dust and human exposure estimates from Makurdi, Nigeria.

Information on polybrominated diphenyl ethers (PBDEs) in the indoor environment in developing countries is still relatively scarce. In this study, house (n=10) and office (n=11) dusts samples collected from Makurdi, Benue State Nigeria were extracted and analysed for most abundant PBDEs congeners in the environment. Soxhlet extraction followed by GC-EIMS was employed for the measurement of PBDEs (BDE-47, -100, -99, -154, -153, -183 and -209).