نتایج جستجو برای: heptachlor

تعداد نتایج: 267  

Journal: :Chemosphere 2011
John Wasswa Bernard T Kiremire Peter Nkedi-Kizza Jolocam Mbabazi Patrick Ssebugere

Organochlorine (OC) residues were analysed in 117 sediment samples collected from four bays of the Uganda side of Lake Victoria. The sediments were collected with a corer at a depth of 0-20 cm, and extracted for OC residues using a solid dispersion method. The extracts were cleaned using gel permeation chromatography and analysed for pesticide residues using a gas chromatograph (GC) equipped wi...

1999

The occurrence and persistence of OC residues in both animal fat and in soil is reviewed. These chemicals have caused problems in production of pasture and grain for livestock. Management strategies to give short term guidelines to graziers are described. Attempts to increase the rate of breakdown in the soil under Australian conditions by varying frequency of cultivation, by addition of lime o...

Journal: :Environmental and molecular mutagenesis 1993
D Gunz S E Shephard W K Lutz

In a commentary in Vol. 20. No. 3, ofthis joumal, Ashby and Lcigibcl [ 19921 warned of possible confusion in the understanding of gcnotoxic and nongenotoxic carcinogens becausc thc ncw transgenic mutation assays might open thc possihility of dctecting mutagenic activitics of chemieals unrclated to their presence in the cell at the momcnt of mutation initiation. They reasoncd that carcinogcns ab...

Journal: :Environmental Health Perspectives 2004
Penelope J E Quintana Ralph J Delfino Susan Korrick Argyrios Ziogas Frederick W Kutz Ellen L Jones Francine Laden Eric Garshick

In this nested case-control study we examined the relationship between non-Hodgkin's lymphoma (NHL) and organochlorine pesticide exposure. We used a data set originally collected between 1969 and 1983 in the U.S. Environmental Protection Agency National Human Adipose Tissue Survey. Adipose samples were randomly collected from cadavers and surgical patients, and levels of organochlorine pesticid...

Journal: :iranian journal of environmental sciences 0
mutala mohammed department of environmental engineering, university of kocaeli, 41380 izmit, kocaeli, turkey kofi boateng department of agricultural engineering, kwame nkrumah university of science and technology, kumasi, ghana

kumasi, sekondi-takoradi, and accra are the major recipients of agricultural commodities or productions in ghana, primarily due to their population and ready markets. to ensure food security, meet food demands, and mitigate the threats posed by pests and diseases, pesticides are used when cultivating vegetables and fruits in ghana. the present study has been conducted to assess the concentratio...

Journal: :Frontiers in sustainability 2021

Current life cycle impact assessment (LCIA) practices use a characterization factor to linearly scale chemical emission human health assuming homogeneous exposure and toxicological susceptibility for the entire population. However, both may vary within population, making same elicit disproportionate impacts. Here we explore how inter-individual variabilities in interact affect estimated overall...

2013
Abdolazim Behfar Zahra Nazari Mohammad Hassan Rabiee Gholamreza Raeesi Mohammad Reza Oveisi Nafiseh Sadeghi Behrooz Jannat

BACKGROUND The organochlorine pesticides (OCPs) are among the most commonly used in water streams around the world. Most of these contaminants are highly hydrophobic and persist in sediments of rivers and lakes. Studies have suggested that OCPs may affect the normal function of the human and wildlife endocrine systems. OBJECTIVES The aim of this study is to determine the concentrations of sel...

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