Government Laboratory
[ ÁcÅ骩 | ²Ê^ª© ] [ Main Page ] [ Site Map ]Forensic Science Division
Chemical Sciences Section
The Chemical Sciences Section deals with a wide variety of cases, with particular emphasis on offences against the person and against property. The work of the section is broadly divided into three categories:
In addition to laboratory work, the professional staff of the section are also responsible for attending fire scenes where the cause is thought to be suspicious.
While the miscellaneous chemical and liquor analysis work areas involve mainly straightforward analytical work, trace evidence examination is often painstaking and labour intensive. This area of work includes the examination of such trace materials as textile fibres, glass, paint and soil, together with the examination of impression marks made by tools and shoe soles. Although costly in terms of manpower and working time, trace evidence frequently plays a major part in the evidence produced in major crime investigations, justifying the input and commitment apportioned to it.
The professional staff in the section are as follows:
| Senior Chemist and Chemist (E-mail address) |
Tel. No. |
| Mr. Bobbie K K Cheung, Senior Chemist (kkcheung@govtlab.gov.hk) |
2762-3757 |
| Dr. Anita K W Cheng, Chemist (akwcheng@govtlab.gov.hk) |
2762-3758 |
| Dr. Billy K O Leung, Chemist (kobleung@govtlab.gov.hk) |
2762-3757 |
| Dr. L H Tong, Chemist (lhtong@govtlab.gov.hk) |
2762-3755 |
Key instruments in the section :
Key Performance Measures Relating to the Forensic Science Services
Targets
Targets are defined as the percentage of completed cases whose individual case-completion time does not exceed a specified number of working day(s)
| Category | Targets | 2009 (Actual) |
2010 (Actual) |
2011 (Plan) |
| Trace evidence completed within 66 working days (%)@ | 90 | 90 | 78 | 90 |
| Miscellaneous Chemical Investigation completed within 33 working days (%)@ | 90 | 95 | 91 | 90 |
| Fire investigation completed within 88 working days (%)@ | 90 | 84 | 64 | 90 |
| @ | From 2009 onwards, the targets are re-defined to be the percentage of completed cases whose individual case-completion time does not exceed a specified number of working day(s), instead of a targeted case-completion time (in working days) which is expected to be met in 80 per cent of the examined cases, in order to better reflect the work performance of the forensic services. |
Key Indicators
Key indicators are the number of cases investigated
| Number of Cases Investigated | 2009 (Actual) |
2010 (Actual) |
2011 (Estimate) |
| Trace evidence | 584 | 450 | 565 |
| Miscellaneous Chemical Investigation | 316 | 326 | 305 |
| Fire Investigation | 32 | 25 | 30 |
TOTAL |
932 | 801 | 900 |
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