The course is a core module for the International Certificate in Occupational Hygiene (ICertOHTA). It is designed to be delivered as a 5-day taught programme including student assessment. The student manual can be used as a free-standing reference for those wishing to study independently.

Materials available for download include the syllabus, student manual, tutor guide, powerpoint slides, overnight and practical exercises.

Course overview


  • Introduce you to toxicology, physiology and epidemiology.
  • Identify chemical substances hazardous to health at work and their harmful effects on target organs.

You will learn to

  • Define commonly used toxicological terms.
  • Know the main routes by which hazardous substances can enter the body, and the factors which influence their absorption, distribution, storage and elimination.
  • Know where to find information on hazardous substances and processes.
  • Understand the principal target organs affected by hazardous substances at work, and the factors influencing harm.
  • Know the main routes of exposure and toxic and health effects for hazardous substances commonly encountered in the workplace.
  • Interpret results from epidemiological studies.

Course material


  • OHTA507 – Student Manual

    Health Effects of Hazardous Substances PDF Student Manual.

    Free Add to cart

Copyright Information

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The information provided in this course is for educational purposes and is not intended as professional or expert advice. The copyright holder has made efforts to ensure the accuracy of the material but does not guarantee its completeness or suitability for any specific purpose.