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Abstract

EVALUATION OF THE EFFECT OF GASOLINE ON SERUM CALCIUM, MAGNESIUM AND PHOSPHORUS LEVEL IN PETROL STATION ATTENDANTS IN YENAGOA, NIGERIA

Onitsha Enebrayi N.*, Egoro Emmanuel T., Okutu Jackson B. and Okonkwo Benedicta N.

ABSTRACT

Exposure to hazardous substances like benzene, toluene, xylene, and ethyl benzene (BTEX) present in crude oil portends serious health problem to humans. This present study investigated the effects of petrol fumes on calcium, magnesium and phosphorus levels in serum of petrol station attendants in Yenagoa, Nigeria. A total of fifty (50) apparently healthy male and female subjects within the age range of eighteen (18) and forty (40) years were recruited for this study. Thirty (30) subjects were petrol station attendants; while twenty (20) were non petrol station attendants who served as control. Blood samples were collected from the subjects; the three parameters calcium, magnesium and phosphorus were analyzed spectrophotometrically using 0-cresolpthalein Complexon, Xyldyl blue and Molybdate UV methods respectively. Results showed statistically significant (P<0.05) reduction in calcium (2.40±0.42) among exposed subjects compared with the control (2.62±0.19), While Magnesium (0.83±0.08) and phosphorus (1.13±0.17) showed no statistically significant (P>0.05) reduction as compared with the control (0.86±0.09 and 1.14±0.22 respectively). Furthermore, there was a statistically significant (P<0.05) reduction in calcium (2.13±0.13) and magnesium (0.77±0.65) among subjects ≥ 5 years duration of exposure compared with < 2 years (2.63±0.25 and 0.89±0.03 respectively). Calcium and phosphorus showed statistically significant (P<0.05) difference in male and female petrol attendants compared with the control, while magnesium did not. Complications usually associated with hypo or hyper states of these microelements are of serious medical concern. Thus, the need for intermittent evaluation of these elements among petrol station attendants with ≥ 5 years exposure is strongly advocated.

Keywords: Calcium, Gasoline, Magnesium, Phosphorus, and Petrol Station Attendants


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