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Table 2 OPs, VOCs – Blood/urine (Non routinely available)

From: Health consequences of exposure to aircraft contaminated air and fume events: a narrative review and medical protocol for the investigation of exposed aircrew and passengers

  

Sample 1

Further samples

Sample details

Blood

VOCs

As soon as possible after event

If possible 6 and 12 h later and 1 month latera

5 ml normal EDTA (2 ml transferred asap to coated headspace tubes)b

Urine

OPs

As soon as possible after event

If possible, 6 and 12 h and 1 month later a

20 ml

What OPs, VOCs to look for:

 OPs

Tricresyl phosphate, meta, para, ortho isomers

Oil

trixylyl phosphates

Oil

tributyl phosphate

Hydraulic

triphenyl phosphate

Oilc, Hydraulic

Others: dibutyl phenyl phosphate (DBPP); triisobutyl phosphate (TiBP); 2,6-di-tert-butyl-p-cresol (BHT)

Hydraulic

isopropylated phenyl, phosphate (3:1) (TIPP/PIP (3:1)

Hydraulic, Oilc

 VOCs

Aldehydes, aliphatics, aromatics, ketones, alcohols and organics such as n-heptane, n-hexane, benzene, toluene, formaldehyde, acetaldehyde, n-pentane and n-octane. (Valeric acid / pentanoic acid, heptanoic acid, octanoic acid)

ASHRAE-Guideline 2021—Table 8–1 [55]

Table listing known OP metabolites

Substance

 

References

TmCP

dicresyl phosphate (DmCP)

Schindler et al. 2013 [100]

TpCP

dicresyl phosphate (DpCP);

p -hydroxybenzoic acid; di-p-cresyl phosphate (DCP); p-cresyl p-carboxyphenylphosphate (1coDCP)

Schindler et al. 2013 [100], Kurebayashi et al. 1985 [94]

ToCPd

dicresyl phosphate (DoCP)

o-Cresyl dihydrogen phosphate and Di-o-Cresyl hydrogen phosphate, salicylic acid, o-hydroxybenzyl alcohol and o-cresol

Schindler et al. 2013 [100], Abou-donia et al. 1990 [104], Somkuti et al. 1990 [105]

TBP

DBP

Schindler et al. 2013 [100]

TPP

DPP

Schindler et al. 2013 [100]

  1. • See supplement- appendix 7 for further advantages & limitations of biomonitoring
  2. aLast sample to be undertaken 1 month later as a baseline. VOCs mainly recover to normal levels within hours and OPs probably within two or three days. If symptoms alleviate before this time, undertake baseline sample with at least one week away from the flying environment
  3. b2ml blood samples have to be transferred ASAP to coated headspace tubes for Gas Chromatography-Mass spectrometry (GCMS) analysis. Contact a specialized laboratory certified for the required analysis
  4. cThis organophosphate is currently used at low levels in one type of 'TCP free' engine oil
  5. dToCP present in engine lubricants is at very low levels and far lower than the more toxic ortho-TCP isomers, Mono-ortho cresyl phosphate and di-ortho cresyl phosphate (MoCP and DoCP) [57, 58, 60-62]