Figure: Molecular structure of Heptachlor
ALS offering for Heptachlor testing
|
Matrix |
LOQ |
Sample volume |
|
Soil |
0.01 mg/kg DW |
10 g |
|
Sediment |
0.01 mg/kg DW |
10 g |
|
Water |
0.01 µg/L |
0.5 L |
Overview
Heptachlor, first synthesized in 1946, was used an insecticide until it was banned in the late 80’s. The compound is still permitted to use for certain xxx such as control of fire ants in underground installations.
Heptachlor is transformed by soil microorganisms to Heptachlor epoxide that is more common in the environment that the parent compunds.
Toxicity
Studies link heptachlor to cancer, endocrine disruption, and developmental problems in animal but there are no conclusive evidence for human toxicity, However, the results from animal studies has raised concern enough for the compound to be classified as a possible human carcinogen.
Heptachlor is highly toxic to birds, bees and aquatic organisms.
Table: International threshold values for Heptachlor
|
Country |
Matrix |
Limit |
|
The Netherlands |
Sediment |
0.003 mg/kg |
|
The Netherlands |
Water |
0.0005 µg/l |
1. Crommentuijn et al., Journal of Environmental Management 58 (2000): 297
Print 
