Question 1
Analysis impact on Mercury Element (Summary of information)
The purpose of the summary is to study the impact of the Mercury element on the environment, the effect that this contaminant has on humans as well as on animals. Different specialists have conducted many studies cases and tests and each of them come up with a different conclusion of the effects. A few percentage of this experiments give as conclusion no harm from the Mercury (Hg) but the majority showed danger and different malfunction and diseases derived by either the inhalation of a certain quantity of the Mercury, either by been exposed for a certain amount of time or by being physically in contact with this contaminant. Following is some of the experiments and their …show more content…
Time-integrated urine Hg levels were used as an indicator of mercury exposure. This study demonstrates that mercury exposure can be associated with preclinical evidence of peripheral neurotoxicity.
Miller et al. (1975) investigated several subclinical parameters of neurological dysfunction in 142 workers exposed to inorganic mercury in either the chloralkali industry or a factory for the manufacture of magnetic materials. They reported a significant increase in average forearm tremor frequency in workers whose urinary Hg concentrations exceeded 50 ug/L as compared with unexposed controls. Also observed were eyelid fasciculation, hyperactive deep-tendon reflexes and dermatographia.
McFarland and Reigel (1978) described the cases of 6 workers who were acutely exposed (4-8 hours) to calculated metallic mercury vapor levels of 1.1 to 44 mg/cu.m. These men exhibited a combination of chest pains, dyspnea, cough, hemoptysis, impairment of pulmonary function (reduced vital capacity), diffuse pulmonary infiltrates and evidence of interstitial pneumonitis. Although the respiratory symptoms resolved, all six cases exhibited chronic neurological dysfunction, presumably as a result of the acute, high-level exposure to mercury
Analysis impact on Mercury Element (Summary of information)
The purpose of the summary is to study the impact of the Mercury element on the environment, the effect that this contaminant has on humans as well as on animals. Different specialists have conducted many studies cases and tests and each of them come up with a different conclusion of the effects. A few percentage of this experiments give as conclusion no harm from the Mercury (Hg) but the majority showed danger and different malfunction and diseases derived by either the inhalation of a certain quantity of the Mercury, either by been exposed for a certain amount of time or by being physically in contact with this contaminant. Following is some of the experiments and their …show more content…
Time-integrated urine Hg levels were used as an indicator of mercury exposure. This study demonstrates that mercury exposure can be associated with preclinical evidence of peripheral neurotoxicity.
Miller et al. (1975) investigated several subclinical parameters of neurological dysfunction in 142 workers exposed to inorganic mercury in either the chloralkali industry or a factory for the manufacture of magnetic materials. They reported a significant increase in average forearm tremor frequency in workers whose urinary Hg concentrations exceeded 50 ug/L as compared with unexposed controls. Also observed were eyelid fasciculation, hyperactive deep-tendon reflexes and dermatographia.
McFarland and Reigel (1978) described the cases of 6 workers who were acutely exposed (4-8 hours) to calculated metallic mercury vapor levels of 1.1 to 44 mg/cu.m. These men exhibited a combination of chest pains, dyspnea, cough, hemoptysis, impairment of pulmonary function (reduced vital capacity), diffuse pulmonary infiltrates and evidence of interstitial pneumonitis. Although the respiratory symptoms resolved, all six cases exhibited chronic neurological dysfunction, presumably as a result of the acute, high-level exposure to mercury