MADCAD.com - The Cloud-Based Reference Library

- Free Trial - Webinar - Feedback

Cart (0)

No items in cart.

Total

There is a technical issue about last added item. You can click "Report to us" button to let us know and we resolve the issue and return back to you or you can continue without last item via click to continue button.

Home

Content

Tour

eLibrary

Store

Not a subscriber? Register for a trial account.

Username:
Password:

Incorrect username/password.

Already a subscriber?

MADCAD.com Free Trial

Sign up for a 3 day free trial to explore the MADCAD.com interface, PLUS access the
2009 International Building Code to see how it all works.

If you like to setup a quick demo, let us know at support@madcad.com
or +1 800.798.9296 and we will be happy to schedule a webinar for you.

Email *
Password *
Confirm *
First Name *
Last Name *
Title
Company Name *
Company Size *
Industry *
Address *
Address 2
City *
State *	Zip *
Country *
Phone *
How did you hear about MADCAD.com? *

Print page(s), starting from page (current page)

Continue to Print

Reset password

Enter your personal account email address to request
a password reset:

Reset password

Enter your account email address to request
a password reset:

Save As:

Are you sure you want to delete this group?

Security check

Please check the following box:

Please login to your personal account to use this feature.

Email:

Password:

Forgot your password?

Remember me for one month

Need a login? Register now.

Please login to your authorized staff account to use this feature.

Username:

Password:

Are you sure you want to empty the cart?

There were no books found for the applied search filters.

CLICK TO START OVER

Report To Us

Please fill the form below so that we can contact you.

Full name*
Email*
Phone

Contact us for a custom quote

Please fill the form below and a member of our staff will contact you shortly. The contents of your cart will automatically be sent to us so we can provide an accurate custom quote.

Company*
Full name*
Email*
Phone

⨯To continue with accurate pricing,
please select your company type below:

Large goverment organizations

Large multi-national corporation (more than $5B annual revenue)

None of the above

Your company has a special pricing case for IEEE.
For pricing, please contact us by filling out the form.

Full name*
Email*
Phone
Your selection

⨯We need your input!

Are you a code official in a jurisdiction with less than 300,000 population?

Yes No

This item is only available for the code officials of jurisdictions less then 300K population.

If you do not meet the criteria item will be removed and you will be able to continue shopping other items.

⨯ We need your input!

Your company has a special pricing case for ASME.
Please make sure the information you provide below is accurate.

Company Industry
Number Of Employees
Revenue

Pricing for the ASME publications in the store is for a 1-4 employee company in Construction Industry with revenue under $500,000.
If correct company info does not match what is publicly available info we will suspend the access and contact you for correction.
Please call 1-800-798-9296 if you have any questions.
If your company has more than 5,000 employee or more than 500 mil revenue please email us at info@madcad.com to receive a special quote, use "ASME Quote" on the subject line.

Cart Warning

Search book title

Search book content

Clear all filters Advanced Search Basic Search

Download File

eLibrary > BS EN 14662-1:2023 Ambient air quality. Standard method for measurement of benzene concentrations - Pumped sampling followed by thermal desorption and gas chromatography >

BS EN 14662-1:2023 Ambient air quality. Standard method for measurement of benzene concentrations - Pumped sampling followed by thermal desorption and gas chromatography, 2024

Expand All

TOC Search:

BS EN 14662-1:2023 Ambient air quality. Standard method for measurement of benzene concentrations - Pumped sampling followed by thermal desorption and gas chromatography, 2024

undefined
1 Scope
2 Normative references
3 Terms and definitions
4 Method description [Go to Page]
4.1 Principle
4.2 Reagents and materials [Go to Page]
4.2.1 Benzene
4.2.2 Dilution solvent
4.2.3 Dilution gas
4.2.4 Inert gas for sampler conditioning
4.2.5 Calibration standards in samplers
4.2.6 Preparation of calibration gas mixtures
4.2.7 Calibration standards in samplers prepared by vapour spiking of calibration gas mixtures
4.2.8 Preparation of standard solutions for liquid spiking [Go to Page]
4.2.8.1 General
4.2.8.2 Solution containing approximately 5 mg/ml of benzene
4.2.9 Stability of standard solutions
4.2.10 Calibration standards in samplers prepared by liquid spiking of standard solutions
4.3 Apparatus [Go to Page]
4.3.1 Samplers
4.3.2 Sampler and caps
4.3.3 Types of sampling devices [Go to Page]
4.3.3.1 General
4.3.3.2 Single sampling device
4.3.3.3 Multiplexing sampling device
4.3.3.4 Parallel sampling device
4.3.4 Sequential sampling devices [Go to Page]
4.3.4.1 General
4.3.4.2 Individual sequential sampling device
4.3.4.3 Parallel sequential sampling device
4.3.4.4 Other functionality
4.3.5 Tubing
4.3.6 Flow calibration device
4.3.7 Gas chromatograph
4.3.8 Thermal desorption (TD) apparatus
4.4 Sampler conditioning and blank profiling [Go to Page]
4.4.1 General
4.4.2 Initial conditioning
4.4.3 Ongoing conditioning
4.4.4 Testing of blanks
4.5 Setting of sampling flow rate
4.6 Sampling
5 Air inlet/manifold sampling equipment [Go to Page]
5.1 General
5.2 Sampling location [Go to Page]
5.2.1 General
5.2.2 Protective shield
5.2.3 Positioning of the inlet
5.3 Sample delivery [Go to Page]
5.3.1 General
5.3.2 Construction
5.3.3 Particle filter
5.3.4 Conditioning
6 Type testing [Go to Page]
6.1 General
6.2 Relevant performance characteristics and performance criteria
6.3 Type testing programme [Go to Page]
6.3.1 Laboratory tests [Go to Page]
6.3.1.1 Sampling equipment design
6.3.1.2 Inlet design
6.3.1.3 Flow control system
6.3.1.4 Sampled volume
6.3.1.5 Constancy of flow through sequentially or parallel sampled tubes
6.3.1.6 Leak tightness of the sampling device
6.3.1.7 Storage of samplers within the sequential sampling device
6.3.1.8 Single tube sampling period
6.3.1.9 Uncertainty of the sampling time measurement
6.3.1.10 Recording of operational parameters
6.3.1.11 Impact of mains voltage failure
6.3.2 Evaluation of test results
7 Field operations and ongoing quality control [Go to Page]
7.1 General
7.2 Frequency of calibrations, checks and maintenance
7.3 Maintenance of the sampling device
7.4 Checks of sampling device sensors
7.5 Calibration of sampling device sensors
7.6 Checks of the sampling system flow rate
7.7 Calibration of the sampling device flow rate
7.8 Leak check of the sampling system
7.9 Evaluation of sample losses in the sampling device
8 Determination of measurement uncertainty [Go to Page]
8.1 General
8.2 Parameters contributing to measurement uncertainty [Go to Page]
8.2.1 Parameters to be assessed and minimum requirements
8.2.2 Between-laboratory uncertainty
9 Report
10 Recommendations for use
Annex A (informative)Sorbent selection and characteristics
Annex B (informative)Analysis of exposed samples [Go to Page]
B.1 Safety precautions
B.2 Thermal desorption
B.3 Determination of desorption efficiency
B.4 Calibration
B.5 Determination of sample concentration
B.6 Calculation of mass concentration of benzene
Annex C (informative)Determination of breakthrough volume from gas standards [Go to Page]
C.1 Reagents
C.2 Apparatus
C.3 Determination
C.4 Calculations
Annex D (informative)Determination of breakthrough volumes from extrapolated retention volumes [Go to Page]
D.1 Apparatus
D.2 Reagents
D.3 Determination
D.4 Expression of results
Annex E (informative)Assessment of performance indicators and uncertainty contributions [Go to Page]
E.1 General
E.2 Sample volume [Go to Page]
E.2.1 General
E.2.2 Sample flow calibration and measurement
E.2.3 Sampling time
E.2.4 Conversion of sampling volume to STP [Go to Page]
E.2.4.1 Mass-flow controlled sampling devices
E.2.4.2 Volume-controlled sampling devices
E.3 Desorption efficiency and analytical repeatability [Go to Page]
E.3.1 Introduction
E.3.2 Desorption efficiency
E.3.3 Analytical repeatability
E.4 Mass of benzene sampled [Go to Page]
E.4.1 General
E.4.2 Sampling efficiency
E.4.3 Sample stability
E.4.4 Corrections to the measured mass of benzene [Go to Page]
E.4.4.1 General
E.4.4.2 Calibration standards
E.4.4.3 Lack-of-fit of calibration function
E.4.4.4 Response drift between calibrations
E.4.4.5 Selectivity
E.4.5 Combined uncertainty in the measured mass of benzene
E.4.6 Combined uncertainty in the sampled mass of benzene
E.5 Mass of benzene in sample blank
E.6 Combined uncertainty in benzene concentration
E.7 Expanded uncertainty
E.8 Uncertainty from performance requirements [Go to Page]
E.8.1 General
E.8.2 Analyte Ingress from air being sampled
E.8.3 Analyte Ingress from Surrounding Air
E.8.4 Loss of Retained Analyte
E.9 Between-laboratory uncertainty
E.10 Example for uncertainty budget calculation
Annex F (informative)Reproducibility, validation and comparison exercises
Annex G (informative)Performance characteristics [Go to Page]
G.1 Prior art
G.2 Results of inter-laboratory comparisons
Annex H (informative)Sampling equipment
Annex I (informative)Significant technical changes [Go to Page]

About Us / Careers / support@madcad.com / 1.800.798.9296

MADCAD.com Free Trial

Report To Us

Contact us for a custom quote

⨯To continue with accurate pricing, please select your company type below:

⨯We need your input!

⨯ We need your input!

Cart Warning

BS EN 14662-1:2023 Ambient air quality. Standard method for measurement of benzene concentrations - Pumped sampling followed by thermal desorption and gas chromatography, 2024

⨯To continue with accurate pricing,
please select your company type below: