What Are Organochlorine Pesticides?
Organochlorine pesticides (OCPs) are a class of chlorinated hydrocarbon compounds that were widely used in agriculture throughout the 20th century — most famously DDT, aldrin, dieldrin, endrin, and lindane. While many have been banned or severely restricted in developed countries under the Stockholm Convention on Persistent Organic Pollutants (POPs), they continue to be detected in the environment — and in human tissues — decades after application.
Their persistence, bioaccumulation through food chains, and endocrine-disrupting properties make them a serious, long-term public health concern.
The Nigerian Context
Nigeria's agricultural sector has historically used a range of pesticides, and monitoring of OCP residues in soil, water bodies, and food crops remains inadequate. My research in this area has examined OCP levels in environmental samples from northern Nigeria, contributing analytical data that can inform regulatory and public health responses.
The analytical chemistry behind this work is demanding: OCPs are present at trace levels (parts per billion) and require sophisticated extraction and GC-ECD or GC-MS techniques for reliable quantification.
Why This Research Matters
- Agricultural soils can harbour OCP residues from decades-old applications
- Irrigation water contaminated with OCPs enters food crops and livestock
- Communities dependent on local fish, vegetables, and grains are exposed unknowingly
- Children are disproportionately affected by endocrine-disrupting chemicals
Linking Phytochemistry and Environmental Chemistry
Interestingly, some of the same medicinal plants I study for their therapeutic properties also accumulate OCPs from contaminated soils. This creates a dual research imperative: understanding both the beneficial chemistry and the potential contamination risk of plant-based remedies sourced from affected agricultural areas.
Our analytical chemistry capabilities at the NDA Chemistry Department enable us to pursue both strands of research — a unique interdisciplinary advantage.
