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. 1990 Feb;47(2):105–109. doi: 10.1136/oem.47.2.105

Effects of low exposure to inorganic mercury on psychological performance.

L Soleo 1, M L Urbano 1, V Petrera 1, L Ambrosi 1
PMCID: PMC1035109  PMID: 2310714

Abstract

The effects of low exposure to inorganic mercury on psychological performance was investigated: the study groups included eight chronically exposed workers and 20 who were only occasionally exposed. These were compared with a control group of 22 subjects from the same plant who were not exposed to mercury. All subjects were administered the WHO test battery to detect preclinical signs of central nervous system impairment: the battery includes the Santa Ana (Helsinki version) test, simple reaction time, the Benton test, and the Wechsler digit span and digit symbol. In addition, the Gordon test was used to study personality profiles and the clinical depression questionnaire. Urinary mercury was used as indicator for internal dose. To this effect, urinary mercury observed in workers examined from 1979 to 1987 was evaluated. Of the pyschic functions explored by behavioural tests, only short term auditory memory was found to be impaired in the chronically exposed workers (p less than 0.05 compared with the controls). The chronically exposed workers were also found to be more depressed than those in the two other groups. No changes of visual motor functions were observed. The personality of the occupationally exposed workers was found to be considerably changed compared with that of the control group. On the basis of the results obtained and in view of urinary mercury mean concentrations in the exposed group which were 30-40 micrograms/l over the years, it is suggested that the TLV-TWA for mercury should be lowered to 0.025 mg/m3 and that the biological urinary exposure indicator for biological monitoring should be 25 micrograms/l.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Bell Z. G., Jr, Lovejoy H. B., Vizena T. R. Mercury exposure evaluations and their correlation with urine mercury excretions. 3. Time-weighted average (TWA) mercury exposures and urine mercury levels. J Occup Med. 1973 Jun;15(6):501–508. [PubMed] [Google Scholar]
  2. Langolf G. D., Chaffin D. B., Henderson R., Whittle H. P. Evaluation of workers exposed to elemental mercury using quantitative tests of tremor and neuromuscular functions. Am Ind Hyg Assoc J. 1978 Dec;39(12):976–984. doi: 10.1080/0002889778507898. [DOI] [PubMed] [Google Scholar]
  3. Lie A., Gundersen N., Korsgaard K. J. Mercury in urine.--Sex, age and geographic differences in a reference population. Scand J Work Environ Health. 1982 Jun;8(2):129–133. doi: 10.5271/sjweh.2485. [DOI] [PubMed] [Google Scholar]
  4. Piikivi L., Hänninen H., Martelin T., Mantere P. Psychological performance and long-term exposure to mercury vapors. Scand J Work Environ Health. 1984 Feb;10(1):35–41. doi: 10.5271/sjweh.2365. [DOI] [PubMed] [Google Scholar]
  5. Roels H., Gennart J. P., Lauwerys R., Buchet J. P., Malchaire J., Bernard A. Surveillance of workers exposed to mercury vapour:validation of a previously proposed biological threshold limit value for mercury concentration in urine. Am J Ind Med. 1985;7(1):45–71. doi: 10.1002/ajim.4700070106. [DOI] [PubMed] [Google Scholar]
  6. Roels H., Lauwerys R., Buchet J. P., Bernard A., Barthels A., Oversteyns M., Gaussin J. Comparison of renal function and psychomotor performance in workers exposed to elemental mercury. Int Arch Occup Environ Health. 1982;50(1):77–93. doi: 10.1007/BF00432495. [DOI] [PubMed] [Google Scholar]
  7. Rossi L. C., Clemente G. F., Santaroni G. Mercury and selenium distribution in a defined area and in its population. Arch Environ Health. 1976 May-Jun;31(3):160–165. doi: 10.1080/00039896.1976.10667211. [DOI] [PubMed] [Google Scholar]
  8. Schuckmann F. Study of preclinical changes in workers exposed to inorganic mercury in chloralkali plants. Int Arch Occup Environ Health. 1979;44(3):193–200. doi: 10.1007/BF00381134. [DOI] [PubMed] [Google Scholar]
  9. Smith P. J., Langolf G. D., Goldberg J. Effect of occupational exposure to elemental mercury on short term memory. Br J Ind Med. 1983 Nov;40(4):413–419. doi: 10.1136/oem.40.4.413. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Smith P. J., Langolf G. D. The use of Sternberg's memory-scanning paradigm in assessing effects of chemical exposure. Hum Factors. 1981 Dec;23(6):701–708. doi: 10.1177/001872088102300607. [DOI] [PubMed] [Google Scholar]
  11. Smith R. G., Vorwald A. J., Patil L. S., Mooney T. F., Jr Effects of exposure to mercury in the manufacture of chlorine. Am Ind Hyg Assoc J. 1970 Nov-Dec;31(6):687–700. doi: 10.1080/0002889708506315. [DOI] [PubMed] [Google Scholar]
  12. Soter N. A., Wasserman S. I., Austen K. F. Cold urticaria: release into the circulation of histamine and eosinophil chemotactic factor of anaphylaxis during cold challenge. N Engl J Med. 1976 Mar 25;294(13):687–690. doi: 10.1056/NEJM197603252941302. [DOI] [PubMed] [Google Scholar]
  13. Stopford W., Bundy S. D., Goldwater L. J., Bittikofer J. A. Microenvironmental exposure to mercury vapor. Am Ind Hyg Assoc J. 1978 May;39(5):378–384. doi: 10.1080/0002889778507774. [DOI] [PubMed] [Google Scholar]
  14. Vroom F. Q., Greer M. Mercury vapour intoxication. Brain. 1972;95(2):305–318. doi: 10.1093/brain/95.2.305. [DOI] [PubMed] [Google Scholar]
  15. Williamson A. M., Teo R. K., Sanderson J. Occupational mercury exposure and its consequences for behaviour. Int Arch Occup Environ Health. 1982;50(3):273–286. doi: 10.1007/BF00378089. [DOI] [PubMed] [Google Scholar]

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