AALSO Water Quality Level 1
Define "absorption spectroscopy" - answer An analytical method that uses the
wavelength dependent absorption characteristics of materials to identify and quantify
specific substances
Define "accuracy" - answer The degree of agreement between the experimental result
and the true value
Define "administrative controls" - answer Changes in work procedures with the goal of
reducing the duration, frequency, and severity of exposure to hazardous chemicals or
situations
Define "alkalinity" (water quality definition) - answer A measure of water's resistance to
changes in pH or its buffering capacity
What does AOB stand for? - answer Ammonia oxidizing bacteria
Define "ammonia oxidizing bacteria" - answerNitrifying bacteria that promote oxidation
of ammonia into nitrite
What does AOD stand for? - answerApplied ozone dose
Define "applied ozone dose" - answerThe quantity of ozone applied for a given flow, or
the required ozone production rate
Define "DPD Method" - answerA method of measuring the chlorine residual in water
Define "engineering controls" - answerMethods that are built into the design of a plant,
equipment, or process to minimize the hazard
What does GHS stand for? - answerGlobally Harmonized System
Define "Globally Harmonized System" - answerAn international system of classification
and labelling of chemicals
Define "Laboratory Fortified Blank" - answerA solution of analyte-free water with known
amount of target analyte
Define "Laboratory fortified matrix" - answerAn aliquot of sample with the addition of
known amount of target analyte prior to sample preparation and analysis
, Define "Laboratory fortified matrix duplicate" - answerA duplicate of the matrix spike
also used to assess the precision and bias of a method in a given sample matrix
Define "Matrix" (water quality definition) - answerThe components of a sample other
than the analyte of interest
Define "Matrix duplicate" - answerA split sample used to assess the precision of a
method in a given sample matrix
What does MPN stand for? - answerMost Probable Number
What is MPN used for? - answerQuantifying an estimated concentration of bacteria
Define "New Tank Syndrome" - answerThe toxic buildup of ammonia and nitrite in a
new system
What causes New Tank Syndrome? - answerThe bacteria have not reached a
population level large enough to process the available ammonia or nitrite produced
What does ORP stand for? - answeroxidation-reduction potential
Define "Oxidation-reduction potential" - answerThe electrical potential required to
transfer electrons from one compound or element (the oxidant) to another compound or
element (the reductant); in water quality, this result is the net status of all oxidation and
reduction reactions in the sample being measured.
What unit is used for oxidation-reduction potential (ORP)? - answermillivolts
Define "oxidant" - answerA reactant that oxidizes or removes electrons from other
reactants during a redox reaction
Define "oxidation" - answerA chemical reaction involving the gain of oxygen, or loss of
electrons
What does a positive ORP result indicate? - answerAn oxidizing environment
What does a negative ORP result indicate? - answerA reducing environment
Define "ozone" (water quality definition) - answerAn unstable gas that is toxic to humans
and has a strong odor; a strong oxidizing agent
What is the chemical composition of ozone? - answerO3
Define "pH" - answerAn expression of the intensity of the basic or acidic condition of a
liquid
Define "absorption spectroscopy" - answer An analytical method that uses the
wavelength dependent absorption characteristics of materials to identify and quantify
specific substances
Define "accuracy" - answer The degree of agreement between the experimental result
and the true value
Define "administrative controls" - answer Changes in work procedures with the goal of
reducing the duration, frequency, and severity of exposure to hazardous chemicals or
situations
Define "alkalinity" (water quality definition) - answer A measure of water's resistance to
changes in pH or its buffering capacity
What does AOB stand for? - answer Ammonia oxidizing bacteria
Define "ammonia oxidizing bacteria" - answerNitrifying bacteria that promote oxidation
of ammonia into nitrite
What does AOD stand for? - answerApplied ozone dose
Define "applied ozone dose" - answerThe quantity of ozone applied for a given flow, or
the required ozone production rate
Define "DPD Method" - answerA method of measuring the chlorine residual in water
Define "engineering controls" - answerMethods that are built into the design of a plant,
equipment, or process to minimize the hazard
What does GHS stand for? - answerGlobally Harmonized System
Define "Globally Harmonized System" - answerAn international system of classification
and labelling of chemicals
Define "Laboratory Fortified Blank" - answerA solution of analyte-free water with known
amount of target analyte
Define "Laboratory fortified matrix" - answerAn aliquot of sample with the addition of
known amount of target analyte prior to sample preparation and analysis
, Define "Laboratory fortified matrix duplicate" - answerA duplicate of the matrix spike
also used to assess the precision and bias of a method in a given sample matrix
Define "Matrix" (water quality definition) - answerThe components of a sample other
than the analyte of interest
Define "Matrix duplicate" - answerA split sample used to assess the precision of a
method in a given sample matrix
What does MPN stand for? - answerMost Probable Number
What is MPN used for? - answerQuantifying an estimated concentration of bacteria
Define "New Tank Syndrome" - answerThe toxic buildup of ammonia and nitrite in a
new system
What causes New Tank Syndrome? - answerThe bacteria have not reached a
population level large enough to process the available ammonia or nitrite produced
What does ORP stand for? - answeroxidation-reduction potential
Define "Oxidation-reduction potential" - answerThe electrical potential required to
transfer electrons from one compound or element (the oxidant) to another compound or
element (the reductant); in water quality, this result is the net status of all oxidation and
reduction reactions in the sample being measured.
What unit is used for oxidation-reduction potential (ORP)? - answermillivolts
Define "oxidant" - answerA reactant that oxidizes or removes electrons from other
reactants during a redox reaction
Define "oxidation" - answerA chemical reaction involving the gain of oxygen, or loss of
electrons
What does a positive ORP result indicate? - answerAn oxidizing environment
What does a negative ORP result indicate? - answerA reducing environment
Define "ozone" (water quality definition) - answerAn unstable gas that is toxic to humans
and has a strong odor; a strong oxidizing agent
What is the chemical composition of ozone? - answerO3
Define "pH" - answerAn expression of the intensity of the basic or acidic condition of a
liquid
