Water sample -- A small volume of water collected from a surface- or ground-water source that is chemically and physically representative of the larger water body.
raw water sample A water sample gathered prior to treatment of any kind.
reach The length of a river between two gaging stations. More generally, any length of a river.
a water sample. The alkalinity is measured by the amount of
standard sulfuric acid required to lower the pH of the water
to a pH level of 4.5, as indicated by the change in color of ...
Blinds: Water samples containing a chemical of known concentration given a fictitious company name and slipped into the sample flow of the lab to test the impartiality of the lab staff
Block-rate pricing: Method of charging on the basis of the volume of water used.
A series of water samples taken over a given period of time and weighted by flow rate.
Two or more different elements held together in fixed proportions by attractive forces called chemical bonds.
Environmental water samples - nitrate, chloride, and fluoride will interfere with method
100 - 1000 µg boron/litre of solution analysed
Neutron Activation with MS analysis ...
The alkalinity in a water sample measured by the amount of standard acid needed to lower the pH to a level of 8.3 as indicated by the change of color of the phenolphthalein from pink to clear.
Source: Terms of the Environment
The more complex or difficult measurements are those that come from analytical methods, typically requiring a water sample to be collected, preserved, and later analyzed in a laboratory setting.
Water chemists are involved in projects such as collecting and analyzing water samples; designing new analytical techniques; evaluating the composition of waters from different watersheds (basins) or from different aquifers ; monitoring how water from a particular source changes with time; ...
Water samples in 25 cities contained chromium-6 at concentrations higher than 0.06 parts per billion (ppb), the "safe maximum" recently proposed by California regulators. Yet even Norman, Oklahoma-the city with the highest level of chromium-6 among those studied-had only 12.
Preservative: A chemical added to organic (or inorganic) water samples to maintain the integrity of the sample. Some common preservatives include nitric acid, hydrochloric acid, phosphoric acid, sodium hydroxide, and refrigeration.
The new range of Stationary and Portable Water Samplers from Endress+Hauser Ltd offer a unique level of flexibility for water-related applications, meet all international standards and can be used as complete m...
Qdos 30 Metering Pump at Canadian City of Barrie ...
is a measure of the amount of coliform bacteria found in a water sample and is used as an indicator that contamination may have occurred or that water treatment processes are not working properly. This triggers a repeat of the treatment process.
Methyl Orange Alkalinity: A measure of the total alkalinity in a water sample in which the color of methyl orange reflects the change in level.
Microbial Growth: The amplification or multiplication of microorganisms such as bacteria, algae, diatoms, plankton, and fungi.
Phenolphthalein Alkalinity: The alkalinity in a water sample measured by the amount of standard acid needed to lower the pH to a level of 8.3 as indicated by the change of color of the phenolphthalein from pink to clear.
Volatile solids (VS) is the amount of matter which volatilizes (or burns) when a water sample is heated to 550EC.
Volatile suspended solids (VSS) is the non-filterable residue remaining after firing the total suspended solids at 550EC. See total suspended solids and fixed suspended solids.
coliform bacteria, total - A measure of the amount of coliform bacteria found in a water sample and is used as an indicator that contamination may have occurred or that water treatment processes are not working properly. This triggers a repeat of the treatment process.
Composite Sample: A series of water samples taken over a given period of time and weighted by flow rate.
Compost: A humus or soil-like material created from aerobic, microbial decomposition of organic materials such as food scraps, yard trimmings, and manure ...
A measure of the total alkalinity in a water sample. The alkalinity is measured by the amount of standard sulfuric acid required to lower the pH of the water to a pH level of 4.5, as indicated by the change in color of methyl orange from orange to pink.
Nephelometric- Method of of measuring turbidity in a water sample by passing light through the sample and measuring the amount of the light that is deflected.
Total Dissolved Solids (TDS): concentration of all substances dissolved in water (solids remaining after evaporation of a water sample).
Toxic Substance (Toxicant): harmful to plant or animal life, either immediately (acute toxicity) or over a long time period (chronic toxicity).
Bailer: A pipe with a valve at the lower end, used to remove slurry from the bottom or side of a well as it is being drilled, or to collect ground-water samples from wells or open boreholes. 2.A tube of varying length
Baling: Compacting solid waste into blocks to reduce volume and simplify handling.
Wells that are used primarily to remove contaminated groundwater from the ground. Water level measurements and water samples can also be collected from extraction wells.
Colony Forming Units (CFU): bacterial colonies cultured from a water sample. CFUs indicate the water's level of bacterial concentration.
Turbidity: A measure of material, usually fine sediments, suspended in water; determined by passing light through a water sample.
monitoring wells : Wells used to collect ground-water samples for analysis to determine the amount, type, and spread of contaminants In ground water.
? Is farming at sea for example seweed-plantations in Sea of Japan.
? Is for example fish farming in the archipelago of Finland.
? Micriobiological composition of water samples.
monitoring well A well used either to collect water samples for purposes of water quality testing, or to measure groundwater levels. MODFLOWA computer code developed by the U.S. Geological Survey for solving the mathematical equations that describe ground-water flow systems.
Its central role in living cells makes it an excellent indicator of the presence of living material in water. A measure of ATP therefore provides a sensitive and rapid estimate of Biomass. ATP is reported in micrograms per liter of the original water sample.
See also: Water, Environment, Waste, Site, Air