Bill Trompetter (GNS Science)

Bill Trompetter

Materials and Air Quality Scientist

GNS Science

Bill is primarily a materials scientist at GNS Science. GNS Science’s air pollution research started with participation in an ongoing United Nations Development Program with 17 countries in the south East Asian region using nuclear techniques to study air particulates. GNS Science analyses air filters and undertakes supporting air particulate matter research both outdoors and indoors. Bill is the current chair for the CASANZ SIG on indoor air quality.


Research interests

  • Air particulate matter;
  • Composition;
  • Source apportionment;
  • Transport;
  • Deposition;
  • Indoor air pollution.



22 June 2020

Infiltration of outdoor smoke into homes has become very topical recently, especially when bushfire smoke was blanketing parts of Australia, and public were being advised to stay indoors for some protection. A similar situation occurs in many southern Australian and New Zealand, towns and cities, where outdoor smoke levels frequently exceed air quality guidelines during cold calm winter nights.


1 June 2020

The identification of indoor air pollutants is useful for exposure analysis and air quality management as we spend 80-90% of our time in built environments. We present the results from a study of indoor aerosol composition across a range of residential housing stock in Wellington, New Zealand.


19 February 2020

Radio New Zealand’s Alison Balance interviewed Physicist Bill Trompetter and atmospheric chemist Perry Davy, from GNS Science, highlighting collective effort on air quality issues outside and indoors.


16 September 2019

2019 Clean Air Society of Australia and New Zealand conference proceedings.


1 March 2019

Children are particularly vulnerable to the health effects of air pollution and as they spend a large proportion of time at school, this is an important environment for children’s exposure to air pollution. Understanding the factors that influence indoor air quality in schools is critical for the assessment and control of indoor air pollution.


27 February 2018

This seminar-style course provided an essential introduction to what air pollution is and what issues are unique to New Zealand. This course explored how air pollution affects the health and wellbeing of people and what factors we can change to reduce the numbers of hospital admissions and deaths due to air pollution.


7 September 2013

2013 Clean Air Society of Australia and New Zealand conference proceedings.