References
- American Conference of Governmental Industrial Hygienists . Threshold Limit Values and Biological Exposure Indices for 1991–1992 . ACGIH . Cincinnati, OH
- Aono , H. and Araki , S. 1988 . Circadian Rhythms in the Urinary Excretion of Heavy Metals and Organic Substances in Metal Workers in Relation to Renal Excretory Mechanism. Profile Analysis . Int. Arch. Occup. Environ. Health , 60 : 1 – 6 .
- Kanabrocki , E. L. , Scheving , L. E. Olwin , J. H. 1983 . Circadian Variation in the Urinary Excretion of Electrolytes and Trace Elements in Men . Am. J. Anat. , 166 : 121 – 148 .
- Lauwerys , R. 1990 . Toxicologie industrielle et intoxications professionnelles , 137 – 144 . Paris : Masson .
- Araki , S. , Sata , F. and Murata , K. 1990 . Adjustment for Urinary Flow Rate: An Improved Approach to Biological Monitoring . Int. Arch. Occup. Environ. Health , 62 : 471 – 477 .
- Mills , J. N. 1968 . “ Circadian Rhythms ” . In A Companion to Medical Studies , Edited by: Passmore , R. and Robson , J. S. Vol. 1 , 44.4 – 44.6 . Blackwell Scientific Publications, Oxford and Edinburgh .
- Greenberg , G. N. and Levine , R. J. 1989 . Urinary Creatinine Excretion Is Not Stable: A New Method for Assessing Urinary Toxic Substance Concentrations . J. Occup. Med. , 31 ( 10 ) : 832 – 838 .