Definition of Physical Barriers. Physical barrier is the environmental and natural condition that act as a barrier in communication in sending message from sender to receiver. Organizational environment or interior workspace design problems, technological problems and noise are the parts of physical barriers.
Nitrate: Health Effects in Drinking Water. Nitrate is one of the most common groundwater contaminants in rural areas. It is regulated in drinking water primarily because excess levels can cause methemoglobinemia, or blue baby disease.
Health Effects. Health effects of nitrate in drinking water are most significantly linked to methemoglobinemia, also known as âblue-baby syndrome.â Baby formula mixed with nitrate-contaminated water exposes infants to nitrate. In infants 0-4 months old, the nitrate is converted to nitrite in the infantâs stomach.f nitrate-nitrogen levels are extremely high (greater than 110 mg/l) up to 90 percent may be removed. Unfortunately, remaining nitrate-nitrogen may still result in drinking water that exceeds the standards of 10 mg/l nitrate-nitrogen. Figure 2.