Contaminents
18 important questions on Contaminents
What do you need to know about chlorophyll? (2 points)
2. Remote sensing because of it's green colour.
What do you need to know about Humic acids? (3 points)
1. Derived from decomposition of plant organic matter
2. Major component of DOM
3. Makes waters brown or black
What is environmental toxicology?
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What are five point sources for water pollution?
1. Domestic wastewater discharges
2. Combined sewer overflows
3. Storm water discharges
4. Industrial discharges
5. Spills
What are four not-point sources for water pollution?
1. Agricultural runoff
2. Livestock
3. Landfills
4. Recreational activities
Chemical water quality is determined by? (name eight things)
1. Dissolved oxygen
2. Biochemical Oxygen Demand (BOD)
3. Suspended solids
4. Nutrients –nitrogen, phosphorus
5. pH
6. Metals
7. Radionuclides
8. Synthetic organic chemicals
What is an endocrine disruptor?
What are five important properties of sampling?
1. Volatility
2. Sensitivity to light
3. Thermal instability
4. Biodegradability
5. Chemical reactivity
What are the four procedure steps for Solid Phase Extraction?
1. Conditioning of the sorbent
2. Sample application
3. Washing the sorbent (removal of interference's)
4. Recovery of the analyte
Why is there a pressure on water quality? (3 things)
2. Scarcity
3. Floods
What does a good status means in the FWD?
What does the endocrine system controls? (4 things)
2. Energy regulation
3. Internal homeostasis
4. Reproduction
What are the six building block steps of a chemical analysis?
2. Sample pretreatment
3. Extraction/cleanup/fractionation
4. Seperation
5. Detection
6. Data analysis
What are four things you need to know about composite samples?
2. Vertical
3. Flow proportional
4. Time proportional
Why can passive sampling be a useful tool in monitoring programs across Europe?
When is Solid Phase Extraction (SPE) used?
What are the advantages of SPE? (nine things)
2. Efficient separation of interferes
3. Reduced organic solvent consumption
4. Easy collection of the total analyte fraction
5. Convenient manuel procedures
6. Removal of particulates
7. Easily automated
8. Large variety of applications
9. Wide choice of sorbent material
What two things do you need to know about chromatography?
2. Components are separated by differential interactions with the stationary phase.
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