EXPOSURE ASSESSMENT OF RAYONG OIL SPILL CLEANUP WORKERS

Details

• Alternative Title:
  Expo Health
• Personal Author:
  Ingviya, Thammasin ; Intawong, Chanthip ; Abubaker, Salahaddhin ; Strickland, Paul T.
• Description:
  Background:
  
  In July of 2013, a pipeline connecting an offshore oil platform to a tanker caused crude oil to spill into the Sea of Rayong off the coast of Thailand. The resulting oil slick, estimated to be between 50 and 190 cubic meters (336-1,200 barrels), washed ashore one day later on the island of Samet. We conducted a study to quantify internal dose of polycyclic aromatic hydrocarbons (PAHs) and benzene in 1,262 oil spill cleanup workers, and to examine factors related to their dose.
  
  Methods:
  
  Frozen stored urine samples (n=1343) collected from the workers during the one month cleanup period were used to measure the concentration of 1-hydroxypyrene-glucuronide (1-OHPG), cotinine and creatinine. Data from questionnaires and urinary trans,trans-muconic acid (t,t-MA), a benzene metabolite, measured previously as part of a worker health surveillance plan, were linked with the laboratory data.
  
  Results:
  
  The internal dose of urinary 1-OHPG was highest in individuals who worked during the first 3 days of cleanup work (median: 0.97 pmol/ml) and was 66.7% lower (median: 0.32 pmol/ml) among individuals who worked in the final week of the study (days 21-28). After adjusting for age, cotinineand creatinine by regression analysis, the decline in urinary 1-OHPG concentration with days of cleanup remained significant (P-trend <0.001). A decreasing trend by days of cleanup was also observed for detectable urinary t,t-MA percentage (P-trend <0.001).
  
  Conclusion:
  
  Rayong oil spill cleanup workers exhibited evidence of elevated levels of PAH and benzene exposure during the early weeks of cleanup, compared to near background levels 4 weeks after cleanup began. Long-term health monitoring of oil spill cleanup workers is advised.
  
  
• Keywords:
  Benzene Biomarkers Cleanup Exposure Oil Spill PAHs
• Source:
  Expo Health. 12(4):617-628
• Pubmed ID:
  31768471
• Pubmed Central ID:
  PMC6876312
• Document Type:
  Journal Article
• Funding:
  T42 OH008428/OH/NIOSH CDC HHSUnited States/ ; T42OH008428/ACL/ACL HHSUnited States/
• Volume:
  12
• Issue:
  4
• Collection(s):
  CDC Public Access
• Main Document Checksum:
  urn:sha-512:20ec6ee96602b1eaa50f0f29ef10e6db578ce92ac4cbb27e03a38622a117b9bdd2a8cac9c6dd4294471b700db6dcf2565a2d3565caba931e2a5b7d6afbfabc81
• Download URL:
  https://stacks.cdc.gov/view/cdc/95824/cdc_95824_DS1.pdf
• File Type:
  [PDF - 867.48 KB ]