Global Gridded gamma-HCH and Endosulfan Emission Inventories

Updated 2000-06-08

The aim of this project is to compile information and create a computerized database of historical and present global lindane and endosulfan usage data as well as emission data for gamma-hexachlorocyclohexane (gamma-HCH) and endosulfan with 1 degree x 1 degree lat/long resolution. The objectives of this project are: A) to create global gridded g-HCH and endosulfan emission inventories; B) to study the linkage between global g-HCH and endosulfan use trends and g-HCH and endosulfan concentration trends in the Arctic; and C) to assist in comparing concentrations and ratios of different HCH isomers in the Arctic biotic and abiotic environments.

This is a National Implementation Plan (NIP) project
Comments and additional information:

HCH had been manufactured as two predominant products: technical HCH (60-70% alpha-HCH, 5-12% beta-HCH, 10-15% gamma-HCH) and lindane (almost pure gamma-HCH). Only gamma-HCH displays significant insecticidal properties.

Time frame

Project time span
2000 - 2001
Data collection
2000 - 2001
Data processing
2000 - 2001
Data reporting
2001 - 2001

Contact information

Contact person
Yi-Fan Li
Meteorological Service of Canada, 4905 Dufferin St., Downsview, Ontario, Canada M3H 5T4
+1 416 739 4892
+1 416 739 4288

Parameters and Media

Parameter groups measured/observed/modelled
Persistent organic pollutants (POPs)
Media sampled/studied/modelled
Additional information or further specification of types of data / information collected, species / tissues / organs sampled, etc.

Specific POPs: lindane, gamma-HCH, endosulfan


Regions studied
None specified
Other areas

Data availability

Are data archived or planned to be archived at an AMAP Thematic Data Centre?
If no (or only part of data are reported to a TDC), where and how are (other) data stored?
The data will be provided upon request to the relevant AMAP assessment chapter authors/drafters, assuming a similar data ownership agreement will be adopted for the second AMAP assessment as was used for the first.
References to key publications (or planned publications) and data reports
Li, Y.F. 1999a. Global technical hexachlorocyclohexane usage and its contamination consequences in the environment: from 1948 to 1997. The Science of the Total Environment. 232, 123-160. Li, Y.F. 1999b. Global gridded technical hexachlorocyclohexane usage inventories using a global cropland as a surrogate. J. Geophys. Res. 104 (D19), 23785-23797. Li, Y.F., M.T. Scholtz and B.J. van Heyst. 2000. Global gridded emission inventory of alpha-HCH. J. Geophys. Res. 105 (D5), 6621-6632.
Samples/specimens archived in specimen banks?

Methods & Procedures

Procedures and methodology used for, e.g., sampling and sample storage, sample pretreatment, extraction and analysis, including which laboratories are involved, references to methods employed, etc.

The references listed above explain the three phases in producing emission inventories of alpha-HCH. In Phase 1 technical HCH usage data is compiled using temporal and spatial interpolation (Li 1999a). In Phase 2, the usage data is gridded by using global gridded cropland data as a surrogate (Li 1999b). In Phase 3, emission inventories of alpha-HCH with 1 degree x 1 degree lat/long resolution are created (Li et al. 2000).

QA/QC Information (what QA/QC procedures are implemented, laboratories involvment in QA/QC activities, model verification/validation routines, etc.)

As there is no central register for these toxic chemicals, the information in the inventories was obtained through literature survey, contacts and contracts with international agencies and discussions with researchers. Sources of data include published papers, proprietorial surveys, special regional studies, contracted studies, United Nations reports and reports from several countries. These data are carefully screened before being entered into our database. In order to grid the usage data, the best surrogates are selected in order to reduce the uncertainty. The results from our calculation will also be compared with monitoring data of concentrations in air, water, and other compartments for consistency. All necessary precedures will be undertaken in order to reduce the uncertainty of the results.

Additional Information

Is this a bi- AND multi-lateral project (i.e. a project involving cooperation between different countries)?
Other institutes involved in the project

- Norwegian Institute for Air Research (NILU); - World Wildlife Fund Canada. Please refer to the Canadian National AMAP Implementation Plan for other information.

Is this project reporting to other organizations/programmes?

- Department of Indian Affairs and Northern Development, Northern Contaminants Program; - Environment Canada, Canada's federal environmental agency

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