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 ~s - 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 ~ 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 ~ to be collected, preserved, and later analyzed in a laboratory setting.
Water chemists are involved in projects such as collecting and analyzing ~s; 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; ...
~s 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) ~s 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 ~rs 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 ~ 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 ~ 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 ~ 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 ~ 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 ~ 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 ~s 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 ~. 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 ~ 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 ~).
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-~s 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 ~s can also be collected from extraction wells.
Colony Forming Units (CFU): bacterial colonies cultured from a ~. 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 ~.
monitoring wells : Wells used to collect ground-~s 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 ~s.
monitoring well A well used either to collect ~s 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 ~.
See also: What is the meaning of Water, Environment, Waste, Site, Air?