title: Effect of hand dermatitis on the total body burden of chromium after ferrous sulfate application in cement among cement workers.
abstract: BACKGROUND
  Ferrous sulfate (FeSO(4)) added to cement has been used to reduce the prevalence of dermatitis in workers. However, the effect of dermatitis on the total uptake of chromium in cement with or without FeSO(4) has not been previously explored.
  
  
  OBJECTIVE
  The objective of this study was to compare the urinary chromium levels before and after FeSO(4) addition among cement workers with or without hand dermatitis.
  
  
  METHODS
  Thirty-five male workers were recruited in this study for two consecutive years: 2003 without using FeSO(4) and 2004 after adding FeSO(4). Urinary chromium was used as a biomarker to estimate the total body burden of chromium.
  
  
  RESULTS
  Urinary chromium concentration showed significant decreases after FeSO(4) was used, and a larger decrease of urinary chromium was observed in workers with hand dermatitis than for those without hand dermatitis. Moreover, a significant decrease of urinary chromium was observed in workers with hand dermatitis in both 2003 and 2004.
  
  
  CONCLUSIONS
  FeSO(4) decreases the total body burden of chromium, especially in workers with severe and continuous hand dermatitis.
authors.affiliation: Graduate Institute of Environmental Health, China Medical University, 91 Hsueh-Shih Road, Taichung 404, Taiwan.
authors.forename: Tzu-Chieh
authors.initials: TC
authors.lastname: Chou
authors.forename: Ho-Yuan
authors.initials: HY
authors.lastname: Chang
authors.forename: Chiou-Jong
authors.initials: CJ
authors.lastname: Chen
authors.forename: Hsin-Su
authors.initials: HS
authors.lastname: Yu
authors.forename: Jyun-De
authors.initials: JD
authors.lastname: Wu
authors.forename: Shiann-Cherng
authors.initials: SC
authors.lastname: Sheu
authors.forename: Tung-Sheng
authors.initials: TS
authors.lastname: Shih