Mercury pesticides

Fluorescent lamps, fluorescent lamp ballasts, batteries, pesticides, mercury-containing thermostats, and other mercury-containing equipment are being singled out for special consideration. Specifically, these electrical and electronic wastes outfall into a regulated category called universal wastes in the United States. 

The quantitative water air sediment interaction (Qwasi) model was developed in 1983 in order to perform a mathematical model which describes the behavior of the contaminants in the water. Since there are many situations in which chemical substances (such as PCBs, pesticides, mercury, etc.) are discharged into a river or a lake resulting in contamination of water, sediment and biota, it is interesting to implement a model to assess the fate of these substances in the aquatic compartment [34]. 

Pesticidal Mercury Compounds. Owens (98) established in 1953 that mercury produced in vitro inhibition of amino-dependent, sulfhydryl-dependent, iron-dependent, and copper-dependent enzymes. It is well known that mercury in high concentrations acts as a protein denaturant. For example, Sohler et al. (109) have shown that mercury compounds inhibit catalase activity at high concentrations. The inhibition of enzymes... 

The primary standards (MCLs) estabhshed included fluoride, arsenic, a variety of pesticides, mercury, lead, nitrates, and several additional inorganic and organic chemicals. 

There are currently thousands of sites in the U.S.A. containing soil contaminated with volatile organic compounds (VOCs), semivolatile organic compounds (SVOCs), polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), pesticides, mercury, and mixed waste (radioactive and hazardous waste). One method used frequently to remediate these sites is thermal desorption. 

One technology suitable for remediating these sites is thermal desorption, which heats soils and sludge to remove volatile contaminants such as VOCs, SVOCs, PAHs, PCBs, pesticides, mercury, and mixed waste for recovery or further treatment. The success of thermal desorption is evidenced by how frequently it has been used since its initial demonstration. From fiscal years (October 1 through September 30) 1982 through 1999, thermal desorption was used in 14% of Superfund... 

The metal is widely used in laboratory work for making thermometers, barometers, diffusion pumps, and many other instruments. It is used in making mercury-vapor lamps and advertising signs, and is used in mercury switches and other electronic apparatus. Other uses are in making pesticides, mercury cells for caustic soda and chlorine production, dental preparations, antifouling paint, batteries, and catalysts. 

Air-poUutant effects on neural and sensory functions in humans vary widely. Odorous pollutants cause only minor annoyance yet, if persistent, they can lead to irritation, emotional upset, anorexia, and mental depression. Carbon monoxide can cause death secondary to the depression of the respiratory centers of the central nervous system. Short of death, repeated and prolonged exposure to carbon monoxide can alter sensory protection, temporal perception, and higher mental functions. Lipid-soluble aerosols can enter the body and be absorbed in the lipids of the central nervous system. Once there, their effects may persist long after the initial contact has been removed. Examples of agents of long-term chronic effects are organic phosphate pesticides and aerosols carrying the metals lead, mercury, and cadmium. 

Arsenic, cadmium, chromium, copper, iron, lead, mercury, tin, zinc Organochlorine pesticides... 

Organic S A Methyl mercury Bacterial activity on inorganic mercury Pesticides... 

Mercury Manufacture of certain chemicals, paper, paint Pesticides Fungicides Adverse health effects... 

MERCURY-BASED PESTICIDES, LIQUID, FLAMMABLE, TOXIC, n.o.s.. 3011 ... 

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