Turbidity

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turbidity

[tər′bid·əd·ē]

(analytical chemistry)

Measure of the clarity of an otherwise clear liquid by using colorimetric scales.

Cloudy or hazy appearance in a naturally clear liquid caused by a suspension of colloidal liquid droplets or fine solids.

(astronomy)

The formation of disks centered on stars in long-exposure photographs as a result of light scattering by grains in the emulsion.

(meteorology)

Any condition of the atmosphere which reduces its transparency to radiation, especially to visible radiation.

Turbidity

the capacity of an optically nonuniform medium to scatter light passing through it (see). The extinction coefficient is a quantitative characterization of turbidity and is given by the equation.

τ ═ (l/I) ln (I₀/I)

where I₀ and I are the intensities of a light beam before and after passage through a layer of the medium of thickness l. Turbidity is determined by methods of nephelometry and turbidimetry.

References in periodicals archive ?

Turbidity (NTU) were correlated with the corresponding SSC (mg [L.

Sampling strategies to estimate suspended sediment concentration for turbidimeter calibration/Estrategias de amostragem para estimar a concentracao de sedimentos em suspensao para a calibracao do turbidimetro

As expected, the association between turbidity and AGI was found in cities with relatively high turbidity levels, often in unfiltered drinking water supplies," De Roos noted.

Cloudy water increases risk of gastrointestinal illnesses: Study

2007) and multiple new studies on the topic, we conducted a review to synthesize the evidence for an association between drinking-water turbidity and AGI incidence.

Review of epidemiological studies of drinking-water turbidity in relation to acute gastrointestinal illness

However, urban activist Atef Amin told Daily News Egypt that this turbidity is due to water pollution and denying this fact is considered a disregard of people's intelligence.

35 water stations halted after floods leave Nile with high levels of turbidity

High levels of turbidity in oxbow lakes can occur due to excessive soil erosion from increased rainfall or high river levels (Obolewski 2011; Cullum et al.

Water quality and fecal coliform levels in Georgia Oxbow Lakes relative to connectivity with the Savannah River

This tributary and others periodically flood and supply suspended sediment to the Colorado River creating periods of high turbidity.

Assessing predation risks for small fish in a large river ecosystem between contrasting habitats and turbidity conditions

These results showed that the removal of turbidity by the combination of the coagulants was more efficient than the removal with [Al.

Chemical coagulants and Moringa oleifera seed extract for treating concrete wastewater/Coagulantes quimicos e o extrato de semente de Moringa oleifera para o tratamento da sgua residuaria de concreto

Cost of devices must drop significantly to make turbidity measurements more accessible to society.

Low-cost laboratory stand for turbidity measurements

Chemical coagulation is one of the mainly utilized tools designed for reduction of COD, color, suspended solids and turbidity [13, 14].

Waste Water Treatment-Bed of Coal Fly Ash for Dyes and Pigments Industry

2008) had studied the use of aluminum sulfate, ferric chloride and poly aluminum chloride in turbidity removal from drinking water.

Defining the most convenient coagulant for microbiological pollution and turbidity removal in Ardabil's water treatment plant

5 to 1 hr to reduce the turbidity of raw river water below 50 NTU [6].

Evaluation of Plastic Household Biosand Filter (BSF) In Combination with Solar Disinfection (SODIS) For Water Treatment

Turbidity is the one of the most important indicator for water clarity to be carried out in this experimental programme.

Removal of physical properties in water supply by WASRA for sustainable irrigation system

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