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Technical Endorsement 2 > EN 1948 - Dioxins, Furans & PCBs > Flashcards

EN 1948 - Dioxins, Furans & PCBs Flashcards

1
Q

What does PCDDs stand for?

EN 1948 - Dioxins, Furans & PCBs

A

Polychlorinated dibenzodioxins

EN 1948 - Dioxins, Furans & PCBs

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2
Q

What does PCDFs stand for?

EN 1948 - Dioxins, Furans & PCBs

A

Polychlorinated dibenzofurans

EN 1948 - Dioxins, Furans & PCBs

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3
Q

What does PCBs stand for?

EN 1948 - Dioxins, Furans & PCBs

A

Polychlorinated Biphenyls

EN 1948 - Dioxins, Furans & PCBs

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4
Q

What concentrations of PCDDs was EN 1948 developed for?

EN 1948 - Dioxins, Furans & PCBs

A

~0.1 ng ITEQ/m³

EN 1948 - Dioxins, Furans & PCBs

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5
Q

What range of dust concentrations was the Standard validated for?

EN 1948 - Dioxins, Furans & PCBs

A

Between 1 and 15 mg/m³

EN 1948 - Dioxins, Furans & PCBs

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6
Q

EN 1948 - Dioxins, Furans & PCBs

A

EN 1948 - Dioxins, Furans & PCBs

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7
Q

What are the 3 different equipment configurations for sampling PAHs?

EN 1948 - Dioxins, Furans & PCBs

A
  1. Filter / condenser method
  2. Dilution method
  3. Cooled probe method

EN 1948 - Dioxins, Furans & PCBs

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8
Q

Name the 6 normative references in EN 1948

EN 1948 - Dioxins, Furans & PCBs

A

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

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9
Q

What is meant by “Dioxin-like PCBs”?

EN 1948 - Dioxins, Furans & PCBs

A

Any PCBs

EN 1948 - Dioxins, Furans & PCBs

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10
Q

How does the analysis laboratory calculate the LOD for Dioxins and Furans?

EN 1948 - Dioxins, Furans & PCBs

A

Takes the mean analytical blank and adds 3x the standard deviation of the analytical blank

EN 1948 - Dioxins, Furans & PCBs

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11
Q

What should the filter temperature be kept at?

EN 1948 - Dioxins, Furans & PCBs

A

Below 125°C but above the dew point

EN 1948 - Dioxins, Furans & PCBs

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12
Q

Filter / Condenser / Absorber Method
What are the sample flowrate and exit temperature requirements?

EN 1948 - Dioxins, Furans & PCBs

A

Sample gas flowrate ~2 m³/hr (32 l/min)
Temperature after the condenser should be < 20°C

EN 1948 - Dioxins, Furans & PCBs

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13
Q

Name 3 typical / allowable solvents to use for sample rinsing

EN 1948 - Dioxins, Furans & PCBs

A
  1. Acetone
  2. Methanol
  3. Toluene

EN 1948 - Dioxins, Furans & PCBs

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14
Q

Which Standard contains the information on filter efficiency, ioskinetic rate and representative sampling points in the duct?

EN 1948 - Dioxins, Furans & PCBs

A

EN 13284-1

EN 1948 - Dioxins, Furans & PCBs

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15
Q

When validating the sampling train as a one off exercise, what is the allowable absorption / adsorption efficiency?

EN 1948 - Dioxins, Furans & PCBs

A

90%

EN 1948 - Dioxins, Furans & PCBs

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16
Q

When must a leak check be performed?

EN 1948 - Dioxins, Furans & PCBs

A

Before and after each sample run, plus after every line change

EN 1948 - Dioxins, Furans & PCBs

17
Q

What is the allowable leak?

EN 1948 - Dioxins, Furans & PCBs

A

< 5% of expected sample flow

EN 1948 - Dioxins, Furans & PCBs

18
Q

When and how often should a blank be taken?

EN 1948 - Dioxins, Furans & PCBs

A

One per campaign per sampling location

EN 1948 - Dioxins, Furans & PCBs

19
Q

What is the minimum sampling time?

EN 1948 - Dioxins, Furans & PCBs

A

6 hours

EN 1948 - Dioxins, Furans & PCBs

20
Q

What is the recommended flue gas sample volume?

EN 1948 - Dioxins, Furans & PCBs

A

> 4 m³

EN 1948 - Dioxins, Furans & PCBs

21
Q

Following sample analysis, what must the recovery rate of each sampling standard be?

EN 1948 - Dioxins, Furans & PCBs

A

> 50%

EN 1948 - Dioxins, Furans & PCBs

22
Q

What must the field blank not exceed?

EN 1948 - Dioxins, Furans & PCBs

A

10% of the ELV

EN 1948 - Dioxins, Furans & PCBs

23
Q

How often must the parameters required for isokinetic sampling be logged?

EN 1948 - Dioxins, Furans & PCBs

A

At least every 15 minutes

EN 1948 - Dioxins, Furans & PCBs

24
Q

What are the storage requirements for samples once taken?

EN 1948 - Dioxins, Furans & PCBs

A

Keep away from light and at a temperature no higher than room temperature (i.e. 25°C)

EN 1948 - Dioxins, Furans & PCBs

25
Q

How many days following sampling should the samples be extracted?

EN 1948 - Dioxins, Furans & PCBs

A

Within 30 days of collection and analysed within 45 days of extraction

EN 1948 - Dioxins, Furans & PCBs

26
Q

What shall the measurement uncertainty value at the daily ELV not exceed

EN 1948 - Dioxins, Furans & PCBs

A

± 30% on a dry gas basis before correction to oxygen

EN 1948 - Dioxins, Furans & PCBs

Technical Endorsement 2 (4 decks)

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