Occupational Hygiene
Anticipate · recognise · evaluate · control workplace exposures across similar-exposure groups.
Exposure agents
7
monitored vs OEL
Exposure groups
5
156 workers
Samples ≥ OEL
3
exceedances needing control
At action level
4
50–100% of OEL
BenzeneCarcinogen
CAS 71-43-2
0.5 ppm
TLV-TWA (STEL 2.5)
Critical effect: Bone marrow / blood — leukaemia
Full blood countUrinary S-PMA biomonitoring
Toluene
CAS 108-88-3
20 ppm
TLV-TWA
Critical effect: CNS, liver
Neuro screenLFT
Xylene
CAS 1330-20-7
100 ppm
TLV-TWA
Critical effect: CNS, irritation
Neuro screen
Total petroleum hydrocarbons (gasoline)
300 ppm
TLV-TWA
Critical effect: CNS, irritation
Symptom screen
Hydrogen sulphide
CAS 7783-06-4
1 ppm
TLV-TWA (STEL 5)
Critical effect: Respiratory, CNS — acute
Respiratory screen
Diesel particulate (elemental carbon)Carcinogen
0.05 mg/m³
EC-based OEL
Critical effect: Lung — carcinogen
SpirometryChest screen
Noise
85 dB(A)
8-h L_EX,8h
Critical effect: Hearing — NIHL
Audiometry