Environment is a major issue which confronts industry and business in today's world on daily basis. Different industrial activities are degrading various environmental components like water, air, soil and plant vegetation. Cement industry is one of the 17 most polluting industries listed by the Central Pollution Control Board (CPCB). The Jaypee Rewa Cement Cement industry, Rewa, Madhaya Pradesh is located between 24 o 33 ' North longitude and 81 o 10 ' east latitude and is situated at Jay Prakash Nagar 20 km from Rewa Town of Madhya Pradesh, India. The Jaypee Rewa Cement industry is the major source of particulate matters, SOx, NOx and CO 2, emissions. Cement dust contains heavy metals like nickel, cobalt, lead, chromium, pollutants hazardous to the biotic environment, with impact for vegetation, human and animal health and ecosystems. Present paper attempts to focus on impact of cement emission on plant vegetation.

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Cattle grazing nearby coal-fired power stations are exposed to fly ash. The present investigation aims to assess the environmental and health impacts of fly ash containing mercury emitted from thermal power plant. The health effect of fly ash were studied using 20 lactating cattle reared within a 5-km radius of s thermal power plant for the possible effect of fly ash such as the alterations in hematological and biochemical parameters of blood, milk, and urine. Results indicated that the hemoglobin levels (6.65 ± 0.40 g/dl) were significantly reduced in all the exposed animals. Biochemical parameters viz., blood urea nitrogen (27.35 ± 1.19 mg/dl), serum glutamate oxaloacetate transaminase (43.39 ± 3.08 IU/l), albumin, and creatinine were found to be increased, whereas serum glutamate pyruvic transaminase (29.26 ± 2.02) and Ca(2+) were observed to be statistically insignificant in exposed animals. Mercury concentrations estimated in the blood, milk, and urine of exposed (n = 20) and control (n = 20) animals were 7.41 ± 0.86, 4.75 ± 0.57, 2.08 ± 0.18, and 1.05 ± 0.07, 0.54 ± 0.03, 0.20 ± 0.02 μg/kg, respectively. The significant increase (P < 0.01) in the levels of mercury in blood, milk, and urine of exposed animals in comparison to control indicated that the alterations of biochemical parameters in exposed cattle could be due to their long term exposure to fly ash mercury which may have direct or indirect impact on human populations via food chain.

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