Edidiong Ikpe - Academia.edu (original) (raw)

Papers by Edidiong Ikpe

Environment and Pollution, 2014

Asian Journal of Biology

The study was undertaken to determine the levels of 16 priority PAHs in soil and sediments from s... more The study was undertaken to determine the levels of 16 priority PAHs in soil and sediments from some vicinities of Ikot Akpaden, Mkpat Enin. The soils were prepared using standard procedure in the laboratory and analyzed for 16 US EPA priority PAHs using Gas Chromatography-Mass Spectrophotometer (GC-MS). The soil samples were obtained from two sampling sites at Ikot Akpaden (Site A and C). Site C showed minimal PAHs concentration while site A recorded PAHs levels ranging from 0.01 to 4.25 mg/kg. According to European commission, the PAHs concentrations in soil samples of this study are moderate, but deleterious over time. The soils were negatively affected more with low molecular weight PAHs than High Molecular Weight PAHs.This study revealed that the sampling sites had low carcinogenic burden, hence would exhibit moderate adverse health effects to plants and animals. It was concluded that automobile repair activities in site A contributed to the soil contamination with PAHs; hence ...

American Journal of Applied and Industrial Chemistry

This study evaluates the level of heavy metals and total hydrocarbon content in Crassostrea spp. ... more This study evaluates the level of heavy metals and total hydrocarbon content in Crassostrea spp. (oysters) at Qua Iboe River, Ibeno LGA. Heavy metals analysis was carried out using the Atomic absorption spectrophotometer (AAS) while the total hydrocarbon content (THC) was determined with Gas chromatography fitted with flame ionization detector (GC-FID). The oysters were selected randomly at three sample study areas analyzed for heavy metal and THC. The results for lead, copper, cadmium and nickel analysis showed that the mean metal concentration at site A were as follows: Pb (1.014 ± 0.011 mg/kg), Cu (0.067 ± 0.089 mg/kg), Ni (0.029 ± 0.006 mg/kg), Cd (0.001±0.001 mg/kg); site B-Pb (1.033 ± 0.003 mg/kg), Ni (1.027 ± 0.010 mg/kg), Cu (0.045 ± 0.010 mg/kg), Cd (0.003 ± 0.002 mg/kg) and site C (control)-Ni (1.025 ± 0.002 mg/kg), Pb (0.01 ± 0.001 mg/kg), Cu (0.001 ± 0.001 mg/kg), Cd was below detection limit (BDL). The total hydrocarbon content at site A was (141244.0±6801.3 mg/kg), site B (172130.4±25703.1 mg/kg) and site C (1894.7±94.3 mg/kg). Health risk was estimated to assess the total hazard quotient (THQ) of heavy metals at the study sites. The estimated daily intake of heavy metals at the study sites were: site A Pb (2.589mg/kg), Cd (0.003 mg/kg), Cu (0.171 mg/kg) and Ni (0.072 mg/kg). THQ at site A of Pb was 2.7795, Cd (0.0096), Cu (0.0174) and Ni (0.0005), site B Pb (2.8316) was the highest followed by Ni (0.4927), Cu (0.01167) and Cd (0.0288) and site C (control) Ni (0.4917) was the highest followed by Pb (0.0027) and Cu (0.0003). The THQ results from site C were below 1 and as such the oysters were safe for consumption. The total hazard quotient for sites A and B, for Cu Cd and Ni were less than 1 and Pb greater than 1, implying that the oysters from sites A and B were not safe and will pose an appreciable hazard to humans for the metal pollutants. Statistically, there was no significant difference because the P 0.05-value was greater than alpha (p>0.05).

The assessment of heavy metals and hydrocarbon contents in mangrove swamp flora and fauna in Qua-... more The assessment of heavy metals and hydrocarbon contents in mangrove swamp flora and fauna in Qua-Iboe River was investigated. The sediment, Callinectes Sapidus and Rhizophora mangle in the study area were analysed for Pb, Cd, Hg, total petroleum hydrocarbon (TPH) and total hydrocarbon content (THC) in wet and dry season. Results showed that, among the metals investigated, Pb had the highest concentration in all the samples for both wet and dry seasons, ranging from 0.002 – 2.344mg/kg. THC showed a higher concentration than TPH in all the samples, ranging from 492.41 to 794,931.81 mg/kg while TPH ranged from 175.97 – 129204.54 mg/kg. Generally, pollutant concentrations were higher in the dry season than wet season and the bioaccumulative behavior of HM in the samples followed the order: sediment > Rhizophora mangle > callinectes sapidus while hydrocarbon bioaccumulation foll...

Iodine deficiency disorders (IDD) has been a major global public health problem threatening more ... more Iodine deficiency disorders (IDD) has been a major global public health problem threatening more than 2 billion people worldwide. Considering various human health implications associated with iodine deficiency, universal salt iodization programme has been recognized as one of the best methods of preventing iodine deficiency disorder and iodizing table salt is currently done in many countries. In this study, comparative assessment of iodine content of commercially available table salt brands in Nigerian market were investigated and iodine content were measured in ten table salt brands samples using iodometric titration. The iodine content ranged from 14.80 mg/kg – 16.90 mg/kg with mean value of 15.90 mg/kg for Sea salt; 24.30 mg/kg – 25.40 mg/kg with mean value of 24.60 mg/kg for Dangote salt (blue sachet); 22.10 mg/kg – 23.10 mg/kg with mean value of 22.40 mg/kg for Dangote salt (red sachet); 23.30 mg/kg – 24.30 mg/kg with mean value of 23.60 mg/kg for Mr Chef salt; 23.30 mg/kg – 24...

chemistry and materials research, 2017

The physico-chemical and bacteriological analysis of borehole water in Ikot Akpaden and the surr... more The physico-chemical and bacteriological analysis of borehole water in Ikot Akpaden and the surrounding villages in Mkpat Enin Local Government area of Nigeria designated as S 1 ,S 2 ,S 3 ,S 4 ,S 5 and S 6 have been carried out using standard analytical techniques. The physico-chemical results show that the secondary water quality parameters such as pH, EC, TDS, Turb., Alka., CaH., MgH., TH., DO., Cl - ., NO 3 - , NO 2 - , SO 4 2- , F - , Fe were either within or below the permissible range recommended by NSDWQ, USPH and WHO.The Statiscal analysis shows a high positive correlation between EC and TDS ; TH and MgH; SO 4 2- and CaH ; evidently, their distribution were significantly correlated, r >0.5. High negative correlation coefficient were seen between F - and Alka; NO 2 - and pH . Coefficient of Variation has also been calculated for the various parameters. However, the results of bacteriological analysis indicated that the water samples were E.coli contaminated in...

The occurrence of crude oil in the Niger Delta with its concomitant petroleumindustrialization ha... more The occurrence of crude oil in the Niger Delta with its concomitant petroleumindustrialization has resulted in generation of enormous waste products. Also spilled oilproduces deleterious effect on both flora and fauna. As such human daily activities andmeans of survival are dependent on the environment in which they live; hence there is needfor best environmental management practices. This research investigated the totalpetroleum hydrocarbons in plants, water and fish samples from and around River Ethiope,Oghara community in Delta State, Nigeria. Total petroleum hydrocarbon (TPH) in Plants,water and fish were extracted separately using standard analytical method and examinedwith the use of Gas Chromatography with Flame Ionization Detector (GC/FID) after purifyingthe extract through column packed with silica gel. The results of the analysis revealed thatthe levels of TPHs in water ranged between (0.004 + 0.003 and 0.008 + 0.008) mg/L while infish ranged between (0.019 + 0.001 and 0.0...

The activated carbon produced from Hura crepitans seed shell was effectively utilized as adsorben... more The activated carbon produced from Hura crepitans seed shell was effectively utilized as adsorbent for the removal of eosin red and malachite green from waste water. Thus the adsorption of eosin red, a typical acid dye and malachite green, a typical basic dye from synthetic waste water using Hura crepitans seed shell activated carbon was studied. The effect of adsorbent dosage, initial dye concentration and contact time was evaluated. The residual eosin red and malachite green concentration in solutions was determined using UV-visible spectrophotometer. All batch experiments were carried out at room temperature (± 2°C) using mechanical shaker that operates at 200 rpm. The results showed that the efficiency of dye adsorption increased with increase in amount of adsorbent, contact time, and with decrease in concentration of dye. The qmax for the adsorption of Malachite green was higher than that of Eosin red showing that MG were removed from waste water easily than ER. The results als...

Asian Journal of Chemical Sciences, 2018

Aims: The study was conducted to determine the biochemical composition and nutritional value of G... more Aims: The study was conducted to determine the biochemical composition and nutritional value of Gongronema latifolium leaf locally cultivated in Mkpat Enin, Akwa Ibom State, Nigeria. Study Design: The study involved sampling, identification of the plant, sample preparation, analyses, and results evaluation/comparison with existing data. This vegetable is consumed generally due to its nutritional and medicinal potential. Place and Duration of Study: The study was carried out in the Chemistry Laboratory of Akwa Ibom State University and the Ministry of Science and Technology Laboratory, Uyo. The study was conducted for six months from July 2017 to January 2018. Methodology: Proximate analyses were done using standard analytical methods of the Association of Analytical Chemists (AOAC) 2000 edition. Micronutrients and trace metals were spectroscopic, using an atomic absorption spectrometer (ATI UNICAM, 939) Standard analytical methods. Of Association of Analytical Chemists (AOAC, 2000) was used for the determination of anti-oxidants: tannin, oxalate, cyanide, and phytate. Results: The results of the analyses obtained for Moisture content, crude protein, crude fiber, and carbohydrate were: 60.91± 2.09%, 22.07 ± 0.04%, 4.96 ± 0.11%, and 2.33 ± 0.09% respectively. Among the micronutrients determined were potassium, 471 ± 12.08 mg/kg; zinc, 0.397 ± 0.07 mg/kg; sodium, 143.8± 8.13 mg/kg; calcium, 130±7.45 mg/kg; magnesium, 133± 5.02 mg/kg and iron, 1142 ± 14.21 mg/kg. The calorific value determined for the leaf was 129.3±10.04 J/ kg. The highest concentration of 471 ±12.08 mg/kg was obtained for potassium, and the lowest mineral content was 0.397± 0.07 mg/kg for zinc. The concentrations of anti-nutrients were generally low with phytate having the highest value of 8.24± mg/kg. Other toxicants had the following values, lead, 0.16±0.009 mg/kg; cadmium, 0.13±0.003 mg/kg; hydrogen cyanide, 0.173±0.043 mg/kg; oxalate, 0.88 ±0.056 mg/kg; tannins, 0.11± 0.005 mg/kg. The calorific value of the leaf was determined to be 129.3± 10.04 J/ kg. Conclusion: The results showed enhanced contents of micronutrients and protein in Utasi leaf, which are a health boost for consumers, mostly pregnant women and children. With the low levels of anti-nutrients and toxicants in Gongronema latifolium leaf, it is a potential source of food supplements and an immune booster in diets.

Chemical Science International Journal, 2019

This study assesses the levels of heavy metals and hydrocarbons in Tympanotomus fuscatus and the... more This study assesses the levels of heavy metals and hydrocarbons in Tympanotomus fuscatus and the sediments of Qua Iboe River, Akwa Ibom State; the interest in the study area was due to the several industrial and oil exploration activities in the area. The heavy metals (HM) of interest were Pb, Cd, Cu, Se, Zn, As, Cr, Fe, Ni and Hg, determined using Atomic Absorption Spectroscopy while Total Hydrocarbon Content (THC) and Total Petroleum Hydrocarbon (TPH) were determined by the GC-FID method. Results obtained indicated that the heavy metal concentration in Tympanotomus fuscatus ranged as follows: Pb (1.037 – 2.002 mg/kg), Cd (0.00 – 0.088 mg/kg), Cu (0.0037 – 10.01 mg/kg), Se (2.364 – 5.063 mg/kg), Zn (0.025 – 1.393 mg/kg), As (0.0113 – 0.355 mg/kg), Cr (1.075 – 3.055 mg/kg), Fe (2.384 – 10.022), Ni (0.045 – 1.223 mg/kg), Hg (0.037 – 1.003 mg/kg) while heavy metal concentration in sediments were: Pb (1.399 – 2.345 mg/kg), Cd (0.0267– 0.222 mg/kg), Cu (0.017 – 10.0197 mg/kg), Se (1.3...