Technical Exam

Question 1

T or F: Add WATER to ACID to dilute a substance

Answer 1

False! Always add ACID to WATER in order to dilute

Question 2

What is suction filtration

Answer 2

quick separation of a precipitate from a liquid using pressure`

Question 3

How do you use a separatory funnel

Answer 3

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

Question 4

What are the three types of extraction

Answer 4

liquid/liquid, liquid/solid, acid/base

Question 5

What is distillation

Answer 5

A large apparatus for removing water from a sample using heating, cooling and a rotating bulb

Question 6

What are the three types of sample preparation

Answer 6

Digestion, extraction and homogenisation

Question 7

what is extraction

Answer 7

a process in order to remove a specfic fragment from a sample

Question 8

what is digestion

Answer 8

a process in order to determine the total contents of specific sample

Question 9

what is the waterloo sewer use bylaw

Answer 9

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

Question 10

What are the six different instrument types that you may need to operate?

Answer 10

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

Question 11

Inductively coupled plasma mass spectrometer (ICP/MS)

Answer 11

measures inorganic biological fluids’ elements at trace levels through the ionization of a sample in hot plasma

Question 12

What is an ion chomatograph

Answer 12

determines the presence and concentrations of ions based on their affinity to the resin present

Question 13

What is an auto analyser

Answer 13

measure multiple parameters and substances quickly for a high price

Question 14

what is a purge and trap chromatograph mass spectrometer (GC/MS)

Answer 14

A headspace technique to assess volatile organic compounds since a gas chromatograph, pump and helium to purge volatile gaseous compounds.

Question 15

What si a liquid chromatograph mass spectrometer (LC/MS)

Answer 15

Combines liquid chromatography methods with the identification techniques of gas mass spectrometry. Used for larger, more polar molecules (non volatile organics)(

Question 16

What is a total organic carbon analyser

Answer 16

measures total organic carbon, must be measured for all drinking water as is is an indicator for disinfection byproducts

Question 17

What is CALA

Answer 17

Canadian Association of Laboratory Accreditation

Question 18

What is the standard council of canada

Answer 18

Council that creates documents that provide a set of agreed upon rules, guidelines or characteristics some are voluntary, some are mandatory

Question 19

What would a standard for drinking water look like?

Answer 19

provides guidance for the number of monitoring stations in a drinking water distribution network; types of parameter devises, qc and calibration requirements

Question 20

T or F: The Ontario Ministry of Environment, Conservation and Parks requires municipalities to produce annual water quality summary reports

Answer 20

True!

Question 21

What is the nutrient management act

Answer 21

An act for farmers regarding disposal and adhering the the safe drinking water act for farm animals

Question 22

What is the Ontario Drinking Water Quality Standards

Answer 22

Under the SDWA, lists standards for each parameter and their limits