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A Measure Of The Acidity Or Alkalinity Of The Water Global History Essay Help

Water pH

Water pH is a measure of the acidity or alkalinity of the water on a scale from 1-14(1 is very acidic 7 neutrals and 14 is very alkaline). The pH of the water affects the solubility of many toxic and nutritive chemicals; therefore, the availability of these substances can affects the aquatic organisms. As acidity increases, most of metals become more in water and this substance can make soluble and more toxic water resources.

Toxicity of cyanides and sulfides also increase with decrease in pH increase in acidity. Ammonia however becomes more toxic with only a slight increase in pH (Joshi et al, 2009). Runoff, sewerage, geology (limestone is associated with more alkaline condition), high nutrient levels are some of the cause to acidity or alkalinity. PH is important in water quality assessment as it influences many biological and chemical processes of water body.

Total Dissolved Solids Assignment summary gcse history essay help: gcse history essay help

Total Dissolved Solids

Total dissolved solids (TDS) comprise inorganic salts and small amounts of organic matter that are dissolved in water. The principal constituents are usually the cations calcium, magnesium, sodium and potassium and the anions carbonate, bicarbonate, chloride, sulphate and, particularly in groundwater, nitrate from agricultural use (Katherine, 1993).

According to ( (Annalakshmi, 2012), the primary sources for higher TDS in the river water from agricultural runoff, discharge of domestic solid and sewerages from households and town and human activity like washing of different vehicles, at and around the river.

The amount of oxygen dissolved in water Summary history assignment help australia

Dissolved Oxygen

According to (Tegegn, 2012), the amount of oxygen dissolved in water depends on the rate of aeration from the atmosphere, temperature, air pressure, and salinity. While, the actual amount of the oxygen that can be dissolved in water depends on the relative rate of respiration by all organisms and photosynthesis by plats, oxygen levels are actually low where organic matters accumulate in waters because aerobic decomposers requires and consumes more oxygen. Dissolved oxygen is vital for aquatic life. The decomposing organic matters, dissolved gases, industrial wastes, minerals, and urban waste runoff results to get lower DO value (Srivastava, et al, 2013).

DO level represents one of the most important measurements of water quality and is a critical indicator of a water body’s ability to support healthy ecosystems. Levels above 5 mg/L are considered optimal, and most fish cannot survive for prolonged periods at levels below 3 mg/L. Microbial communities in water use oxygen to breakdown organic materials, such as manure, sewage and decomposing algae. Low levels of dissolved oxygen can be a sign that too much organic material is in a water body.

The most important measurements of water quality history assignment example: history assignment example

DO level represents one of the most important measurements of water quality and is a critical indicator of a water body’s ability to support healthy ecosystems. Levels above 5 mg/L are considered optimal, and most fish cannot survive for prolonged periods at levels below 3 mg/L. Microbial communities in water use oxygen to breakdown organic materials, such as manure, sewage and decomposing algae. Low levels of dissolved oxygen can be a sign that too much organic material is in a water body.

2.8.2.4 Biochemical Oxygen Demand

Biochemical oxygen demand (BOD) is a measure of the amount of oxygen that bacteria will consume while decomposing organic matter under aerobic conditions. Biochemical oxygen demand (BOD) is used as index for determining the amount of decomposing organic material as well as the rate biological activities in the water. This is because oxygen is required for respiration by microorganisms involved in the decomposition of organic materials. Thus, high concentration of BOD indicates the presences of organic influents and hence oxygen requiring microorganism (UNEP, 2009).

Biochemical Oxygen Demand(BOD)Summary advanced higher history essay help

Biochemical Oxygen Demand

Biochemical oxygen demand (BOD) is a measure of the amount of oxygen that bacteria will consume while decomposing organic matter under aerobic conditions. Biochemical oxygen demand (BOD) is used as index for determining the amount of decomposing organic material as well as the rate biological activities in the water. This is because oxygen is required for respiration by microorganisms involved in the decomposition of organic materials. Thus, high concentration of BOD indicates the presences of organic influents and hence oxygen requiring microorganism (UNEP, 2009).