Beverages are consumed in Nigeria irrespective of age, sex, and socioeconomic status. Beverages may be alcoholic (wine, spirits, and beers) or non-alcoholic (soft drink, energy drinks, candies, chocolates, milks). Notwithstanding, most beverages are packed in cans, bottles, and plastics. This paper reviews the concentration of heavy metals from some commercially-packaged beverages consumed in Nigeria. The study found that heavy metal concentrations, including iron, mercury, tin, antimony, cadmium, zinc, copper, chromium, lead, and manganese, seldom exceed the maximum contaminant level recommended by the Standard Organization of Nigeria (SON) and the World Health Organization (WHO) as applicable to drinking water resources. The occurrence of heavy metals in the beverages could have resulted from the feedstocks and water used in their production. Consumption of beverages high in heavy metal could be toxic and cause adverse effect to human health, depending on the rate of exposure and accumulation dosage. This study concludes by suggesting that heavy metal concentration in the feedstocks and water should be monitored by producers, and its concentration in beverages should also be monitored by appropriate regulatory agencies.

The Niger Delta region of Nigeria is one of the largest wetland and biodiversity hotspots in Africa that inhabit several endemic species. Biodiversity including plants, animals and microbes have several economic importance to human and its ecosystem. Of recent, the intensity of bush burning in the Niger Delta has increased. Bush burning is among the leading cause of decline in composition and abundance of biodiversity. This study evaluated the potential causes of bush burning, impacts on biodiversity and possible options for mitigation in the Niger Delta region of Nigeria. The study found that quest for bush meat (i.e. major source of animal protein), burning of solid wastes, precarious discharge of cigarette remains and deliberate uncontrolled in-situ burning by farmers as the leading cause of bush burning. Bush burning portends adverse effects like; habitat fragmentation, destruction of medicinal plant, extinction of species in the wild, loss of food sources, loss of raw material that can be useful for several art work, wood fuel, construction and shelter materials, and disruption of ecological processes including biogeochemical cycling. The paper concludes by suggesting pasture management, wastes management, sensitization, enactment and implementation of bush burning laws and specifying punishment for offenders, and introduction of biodiversity conservation techniques in school curriculum as potential option for mitigation.

Citation: Angaye TC, Abowei JFN. Evaluation of suspended particulate matter (SPM) around municipal solid waste dumpsites in yenagoa metropolis, Nigeria.

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