Research Papers/Topics in Analytical Chemistry

EVALUATION OF EXCESSIVE LIFETIME CANCER RISK DUE TO NATURAL OCCURRING RADIONUCLIDES AND HEAVY METALS IN LAGOS BEACH SEDIMENT WORK

AbstractsEvaluation of anthropogenically enhanced naturally occurring radionuclides 238U, 232Th and 40K present in Lagos beach sediment (Eleko and Elegushi) were analyzed with gamma ray spectrometer using a highly shielded NaI (TI) detector with the objective of evaluating the environmental radiological hazard. Mineralogical analysis and characterization was also carried out using Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) technique. Heavy metals such as Pb, Cd...

Determination of levels of lead in paints to which young children and adults are exposed.

The Paint samples were gotten from old houses in areas of Ikorodu, Onipan, Lekki, Berger, Agbado-Ijaye, Lagos Island, Moremi and Makama hall (University of Lagos) and were digested using three different methods, which include1) Nitric acid and per-chloric acid digestion2) Nitric acid and hydrogen peroxide digestion3) Dry ashing digestion using muffle furnace    These methods were compared and was discovered that oil - based paints (gloss paints) has higher concentration of lead than...

COMPARATIVE DETERMINATION OF CALCIUM AND MAGNESIUM IN FOOD SUBSTANCES USING EDTA-TITRIMETRY AND FLAME ATOMIC ABSORPTION SPECTROMETRY (FAAS)

A comparative study was carried out for the determination of calcium and magnesium in milk and water melon (food sources of calcium and magnesium). Mixed standard solutions of calcium and magnesium (spike) were added to the samples before digesting with a mixture of concentrated nitric acid and concentrated hydrochloric acid (1:3). The calcium and magnesium content of the digest were determined using flame atomic absorption spectrophotometer (FAAS) and EDTA titration. The percentage recovery ...

STUDIES ON CORROSION INHIBITION POTENTIAL OF INDIGO CARMINE ON MILD STEEL IN ACIDIC MEDIUM

ABSTRACTStudies on corrosion inhibition potential of Indigo Carmine extract on mild steel in acidic medium was carried out using weight loss and electrochemical techniques. It was observed that the Indigo Carmine extract retarded the dissolution of mild steel in the acidic medium. The corrosion rate decrease with increase in concentration. The CR decrease from 37.59mm/yr to 27.50mm/yr in presence of the inhibitor. The CR also increase with increase in temperature up to 60oC. The increa...

TRANSLOCATION OF HEAVY METALS FROM SOIL TO VEGETABLES (SPINACH AND OKRA) IN IRRIGATED FARMS LAND BY NASARAWA TOTO RIVER BANKS IN NASARAWA STATE.

ABSTRACTThis study was conducted to investigate the level of translocation of heavy metals in vegetables(spinach and okra) with soils samples from farmlands irrigated with Nasarawa Toto River Bank water in Nasarawa state Nigeria. Using atomic absorption spectrophotometry(AAS), concentrations of Pb, Cd and Cr are determined in ten different farmlands were vegetables(spinach and okra) with soils were collected. The ranges of average concentrations of metals (mg/kg) of Pb and Cd in spinach...

DETERMINATION OF SOME SELECTED HEAVY METALS IN TOMATO (FRUITS AND LEAVES) AND ONION BULBS COLLECTED FROM HUNKUYI ROADSIDE FARMS, ZARIA.

ABSTRACT The concentration of heavy metals such as Pd, Cd, Cu and Cr were studied using AAS on vegetable samples such as Tomato (fruit and leaf) and Onion bulb. Trace element as Cu showed high concentration. The concentration of heavy metal like Cu ranged from of 0.155 to 0.024mg/kg in tomato fruit; 0.120 to 0.057mg/kg in leafy tomato; 0.118 to 0.121mg/kg in onion bulb which were more than the maximum permissible limit according to the International organization like FAO and WHO. The c...

Acid rain

The major causes of pollution<br>its effects and solution

Comparative study of disinfectant efficiency of ethanol,bleach, phenolic against staphyloccocus aeurus

comparative study of disinfectant efficiency of ethanol, bleach,phenolic is my project topic from covenant polytechnic aba, abia state.