Publications and presentations
The public contributions to exposure assessment and control are
grouped in the following Click-and-go headers:
go to: 1. Alignment
go to: 2. Exposure assessment, variability and control.
go to: 3. OELV, DN/MEL, Kick-off, Hazard Banding & their hierarchy
go to: 4. Occupational health and Epidemiology
1. Alignment of tools for workplace exposure assessement
IOHA
2018 Washington: Progress in the alignment of control banding tools
AIHCe
2017 Seattle: Testing Hazard Banding Performance and Strength
BOHS
OH2017 Harrogate: Filling the OELV gap: Optimize Hazard Banding
NVvA
Conference 2017: The alignment of parallel OH tools. An IOHA project?
IOHA 2015 Conference: The need for international alignment of Occupational Hygiene
tools
2. Exposure assessment, variability and control:
2024:
Download here the zip-file with handouts of the IOHA2024 Dublin PDC on june
9
Basic Characterisation and the zip-file with the Excel application
IH-Aligner.
IH-Aligner is an excel tool to process and export results of PAS measurements
performed within a Similar Exposure Group (SEG) or an Exposure Scenario (ES).
It performs the arithmetic adjustment of measurement results to the correct
time-weighted average (TWA) matching with the OELV reference period. Furthermore,
tests are performed on the goodness-of-fit (log)normality of the TWA set and
several UTL95%,## calculated for testing compliance. The main assistance is
that measurement results are converted into a format that can be import (copy-paste)
into most freely applicable statistical programmes for occupational hygiene.
The use of IH-Aligner is free of charge. However, we would welcome feedback
on its use (bugs) or suggestions for improvement.
IOHA2024 Dublin june 13. Handout of the
rehab_measurement_uncertainty presentation.
2022:
NYF
2022 EN689 Conference. OELV compliance decisions & the EN689 preliminary test.
If the 95% percentile (C95%) of a log-normal shaped exposure distribution is
around the Occupational Exposure Limit Value (OELV) and PAS measurements are
taken within a SEG to test compliance with the OELV, then the EN689 5.5.2 preliminary
tests delays a compliance decision unnecessarily and is cost ineffective for
the employer compared to the EN689 5.5.3 statistical test, which measures with
70% confidence whether less than 5% of exposures in the SEG exceeds the OELV
(C95,70% >OELV) . The preliminary test decision schedule also underestimates
workers' health risk and delays necessary control measures for GSD>6.
2018:
IOHA
2018 Conference. Towards a library of exposure profile related GSD values
Occupational exposure assessment is always confronted (compared to other quality
control area's like environment, productsafety) with extreme small sample size
measurements series. A library of SEG or exposure profile (EN689 3.1) specific
GSD's may support the appraiser to test the confidence of their sample GSD (is
it too small or too large for the SEG examined) when 6 or less PAS measurements
are available. Such a library gives scientist a tool to make their Bayesian
compliance testing methods more credible. Existing GSD info already debunks
existing, historical myths that the long-term GSD must be smaller than 3 (IHSTat).
2017:
NVvA
Conference 2017 Ioannidis and do individuals performing the same job have different
average exposures?
The pressure to publish and use only positive and 'significant' results in OELV
limit setting and exposure modelling, drives journals and researchers to rearange
or reject data, support unvalidated methods and shop in publications dispite
their validity and relevance. Institutes and journals in occupational exposure
sciences should be transparent (make raw data available) and work according
to the codes on reseach integrity
2016:
SOPHYT
Forum (Lille). Statistics and representative measurements
Scheme prEN 689
(2016) compliance testing
BOHS
prEN 689 workshop (Glasgow). Representative measurements & work patern/worker
exposure variability within the SEG
2015:
CEN137
TC1 (Paris). Indentifying exceptional exposure within a SEG using Student-t/ANOVA
statistical tests
AEHI
Seminario (Barcelona). The new CEN 689 Compliance resting guidance
CEN137
TC1 (Delft). Lognormality and handling Non-detects
IOHA BW_Stat
PDC (London). Basic Characterzation
IOHA BW_Stat PDC
(London).
Compliance testing
2014:
AIHCe
(San Antonio). Validation of Control Band hazard grouping
Estimating
the vapour pressure and the OELV for compliance testing of complex solvent mixtures
using XLUNIFAC (BOHS conference 2014 Nothingham).
BOHS Poster
(Nothingham). A hierarchy of OELVs
2013:
BOHS
Conference (Manchester). Between-worker differences and sampling strategy flaws
2011:
BOHS-NVvA
Compliance testing guidance
2011:
2001:
NVvA
Guidance on exposure data recording
Long-term
exposure sampling at a Dutch (bio)chemical production site
2000:
The
distribution of long-term GSD's in well defined chemical industry SEG's
in Dutch , English
PPT
1999:
TWA
8-hours OELV for chronic toxic chemical substances based on long-term NOEL or
DNELS (in Dutch , English summary)
On
the compliance control of long-term OELVs. Vinylchloride monomer (in Dutch ,
English summary)
Weel Committee
. Workplace Environmental Exposure Levels (OARS WEEL's). Melamine. American
Industrial Hygiene Association. Fairfax Virginia 1999.
1996:
Occupational
Exposure Database core information
1994:
Letter
to the editor on methodological flaws in the analysis of within and between
worker variability
1991:
HYGINIST: Compliance
testing software for workplace exposure within a Similar Exposure Group
(SEG) with Goodness-of-fit, regression based handling of undetectables, comparing
sample GM and GSD with priors, optimize sample size.
1984:
Maintenance
painters solvent exposure assessment and effect-specific limit values
1980:
Tetrachloroethylene_in_exhaled_air_of_residents_near_dry-cleaning_shops
3. OELV, DN/MEL, Kick-off, Hazard Banding & their hierarchy:
2016:
Scientific publication On
the Strength and Validity of Hazard Banding and its suplementary
data
NVvA
Conference presentation (Scheveningen). Testing strength and validity of Hazard
Band engines
2015:
IOHA
Conference (London). Finding best performing hazard band engines within Control
Banding tools
2014:
Presentation
H3##-statement based kick-off levels. Bilthoven NVT-AT 140925
Careful
with that DNEL, Occupational Hygienist! A quantitative comparison with higher
Hierarchy OELVs
Deutsche Gesellschaft für
Arbeitshygiene. Berechnung der Anzahl von Messungen für den Vergleich der
inhalativen Exposition am Arbeitsplatz mit einem Grenzwert (auf ENGLISCH)
2006
DOHSBase-Compare:
ranking inhalation risk potential of chemicals for substitution purposes (in
Dutch)
2005
Publication
R-phrase based Kick-off levels (in Dutch, English summary)
1992-today
Dohsbase, a comprehensive
database with hierarchical information on phys-chem, health hazard info, OELVs,
sampling methods and risk ranking of chemicals used in the workplace.
4. Occupational health and epidemiology:
2005:
Dutch Caprolactam workers exposed to pure Benzene. A blind (=independent
established exposure and mortality), retrospective cohort mortality study. Contradicts
linear hazard assessments like AGS
(2012).
2003:
Leukaemia risk in Caprolactam workers exposed to Benzene. Institute of petroleum.
Report meeting 22-10-2002.pdf.
1998:
Update
Acrylonitrile cohort study
1992:
Mortality
of Workers exposed to Acrylonitrile
1991:
Mortality
of coke plant workers in the Netherlands
1984:
Mortality
among laboratory assistants in a Coke plant [1928-1946] (in Dutch, English summary).
The first correct performed, retrospective occupational cohort study in
the Netherlands.