EN 1948 - Dioxins, Furans & PCBs Flashcards
What does PCDDs stand for?
EN 1948 - Dioxins, Furans & PCBs
Polychlorinated dibenzodioxins
EN 1948 - Dioxins, Furans & PCBs
What does PCDFs stand for?
EN 1948 - Dioxins, Furans & PCBs
Polychlorinated dibenzofurans
EN 1948 - Dioxins, Furans & PCBs
What does PCBs stand for?
EN 1948 - Dioxins, Furans & PCBs
Polychlorinated Biphenyls
EN 1948 - Dioxins, Furans & PCBs
What concentrations of PCDDs was EN 1948 developed for?
EN 1948 - Dioxins, Furans & PCBs
~0.1 ng ITEQ/m³
EN 1948 - Dioxins, Furans & PCBs
What range of dust concentrations was the Standard validated for?
EN 1948 - Dioxins, Furans & PCBs
Between 1 and 15 mg/m³
EN 1948 - Dioxins, Furans & PCBs
EN 1948 - Dioxins, Furans & PCBs
EN 1948 - Dioxins, Furans & PCBs
What are the 3 different equipment configurations for sampling PAHs?
EN 1948 - Dioxins, Furans & PCBs
- Filter / condenser method
- Dilution method
- Cooled probe method
EN 1948 - Dioxins, Furans & PCBs
Name the 6 normative references in EN 1948
EN 1948 - Dioxins, Furans & PCBs
EN 1948-2 - extraction and clean up of PCDDs / PCDFs
EN 1948-3 - identification and quantification of PCDDs / PCDFs
EN 13284-1 - determination of dust
EN 14789 - determination of oxygen
EN 14790 - determination of water vapour
EN ISO 17025 - general lab competence
EN 1948 - Dioxins, Furans & PCBs
What is meant by “Dioxin-like PCBs”?
EN 1948 - Dioxins, Furans & PCBs
Any PCBs
EN 1948 - Dioxins, Furans & PCBs
How does the analysis laboratory calculate the LOD for Dioxins and Furans?
EN 1948 - Dioxins, Furans & PCBs
Takes the mean analytical blank and adds 3x the standard deviation of the analytical blank
EN 1948 - Dioxins, Furans & PCBs
What should the filter temperature be kept at?
EN 1948 - Dioxins, Furans & PCBs
Below 125°C but above the dew point
EN 1948 - Dioxins, Furans & PCBs
Filter / Condenser / Absorber Method
What are the sample flowrate and exit temperature requirements?
EN 1948 - Dioxins, Furans & PCBs
Sample gas flowrate ~2 m³/hr (32 l/min)
Temperature after the condenser should be < 20°C
EN 1948 - Dioxins, Furans & PCBs
Name 3 typical / allowable solvents to use for sample rinsing
EN 1948 - Dioxins, Furans & PCBs
- Acetone
- Methanol
- Toluene
EN 1948 - Dioxins, Furans & PCBs
Which Standard contains the information on filter efficiency, ioskinetic rate and representative sampling points in the duct?
EN 1948 - Dioxins, Furans & PCBs
EN 13284-1
EN 1948 - Dioxins, Furans & PCBs
When validating the sampling train as a one off exercise, what is the allowable absorption / adsorption efficiency?
EN 1948 - Dioxins, Furans & PCBs
90%
EN 1948 - Dioxins, Furans & PCBs
When must a leak check be performed?
EN 1948 - Dioxins, Furans & PCBs
Before and after each sample run, plus after every line change
EN 1948 - Dioxins, Furans & PCBs
What is the allowable leak?
EN 1948 - Dioxins, Furans & PCBs
< 5% of expected sample flow
EN 1948 - Dioxins, Furans & PCBs
When and how often should a blank be taken?
EN 1948 - Dioxins, Furans & PCBs
One per campaign per sampling location
EN 1948 - Dioxins, Furans & PCBs
What is the minimum sampling time?
EN 1948 - Dioxins, Furans & PCBs
6 hours
EN 1948 - Dioxins, Furans & PCBs
What is the recommended flue gas sample volume?
EN 1948 - Dioxins, Furans & PCBs
> 4 m³
EN 1948 - Dioxins, Furans & PCBs
Following sample analysis, what must the recovery rate of each sampling standard be?
EN 1948 - Dioxins, Furans & PCBs
> 50%
EN 1948 - Dioxins, Furans & PCBs
What must the field blank not exceed?
EN 1948 - Dioxins, Furans & PCBs
10% of the ELV
EN 1948 - Dioxins, Furans & PCBs
How often must the parameters required for isokinetic sampling be logged?
EN 1948 - Dioxins, Furans & PCBs
At least every 15 minutes
EN 1948 - Dioxins, Furans & PCBs
What are the storage requirements for samples once taken?
EN 1948 - Dioxins, Furans & PCBs
Keep away from light and at a temperature no higher than room temperature (i.e. 25°C)
EN 1948 - Dioxins, Furans & PCBs
How many days following sampling should the samples be extracted?
EN 1948 - Dioxins, Furans & PCBs
Within 30 days of collection and analysed within 45 days of extraction
EN 1948 - Dioxins, Furans & PCBs
What shall the measurement uncertainty value at the daily ELV not exceed
EN 1948 - Dioxins, Furans & PCBs
± 30% on a dry gas basis before correction to oxygen
EN 1948 - Dioxins, Furans & PCBs
