Technical Exam Flashcards
T or F: Add WATER to ACID to dilute a substance
False! Always add ACID to WATER in order to dilute
What is suction filtration
quick separation of a precipitate from a liquid using pressure`
How do you use a separatory funnel
Ensure the stopcock is in the closed position, place a flask below your funnel to ensure no accidental spillage. Liquids at different densities are used in order to extract a specific liquid using a liquid/liquid extraction
What are the three types of extraction
liquid/liquid, liquid/solid, acid/base
What is distillation
A large apparatus for removing water from a sample using heating, cooling and a rotating bulb
What are the three types of sample preparation
Digestion, extraction and homogenisation
what is extraction
a process in order to remove a specfic fragment from a sample
what is digestion
a process in order to determine the total contents of specific sample
what is the waterloo sewer use bylaw
excep with permission, no person shall alter or remove a connection without writeen apporval from the commisioner. quality tests as required must be performed in order to be approved
What are the six different instrument types that you may need to operate?
1- Inductively coupled plasma mass spectrometer
2-Ion Chromatograph
3- Auto analyser
4- Purge and trap chromatograph mass spectrometer
5- Liquid chromatograph mass spectrometer
6- Total organic carbon alayser
Inductively coupled plasma mass spectrometer (ICP/MS)
measures inorganic biological fluids’ elements at trace levels through the ionization of a sample in hot plasma
What is an ion chomatograph
determines the presence and concentrations of ions based on their affinity to the resin present
What is an auto analyser
measure multiple parameters and substances quickly for a high price
what is a purge and trap chromatograph mass spectrometer (GC/MS)
A headspace technique to assess volatile organic compounds since a gas chromatograph, pump and helium to purge volatile gaseous compounds.
What si a liquid chromatograph mass spectrometer (LC/MS)
Combines liquid chromatography methods with the identification techniques of gas mass spectrometry. Used for larger, more polar molecules (non volatile organics)(
What is a total organic carbon analyser
measures total organic carbon, must be measured for all drinking water as is is an indicator for disinfection byproducts
What is CALA
Canadian Association of Laboratory Accreditation
What is the standard council of canada
Council that creates documents that provide a set of agreed upon rules, guidelines or characteristics some are voluntary, some are mandatory
What would a standard for drinking water look like?
provides guidance for the number of monitoring stations in a drinking water distribution network; types of parameter devises, qc and calibration requirements
T or F: The Ontario Ministry of Environment, Conservation and Parks requires municipalities to produce annual water quality summary reports
True!
What is the nutrient management act
An act for farmers regarding disposal and adhering the the safe drinking water act for farm animals
What is the Ontario Drinking Water Quality Standards
Under the SDWA, lists standards for each parameter and their limits
